Please remember that any fill in the blank or T and F question can be turned into a multiple choice.

LECTURE QUIZ 1

1. Which one is NOT correct?
A. Science is a collection of facts
B. Science is the process of discovering the rules that govern the physical universe
C. Science deals with facts and observations which are testable and debatable
D. Science is a way of critically thinking

2. What starts with a conclusion that cannot be proven wrong?
A. junk science
B. pseudoscience
C. science

3. Which of the following refers to the human inability to determine what the temperature is early in spring?
A. Subjective vs objective tests
B. Independent controls
C. Repetition and adequate sample size

4. Which of the following refers to a bathroom scale that gives the same wrong reading all the time?
A. Subjective vs objective tests
B. Independent controls
C. Accuracy and precision

5. Which one of the following statements can be TESTED?
A. I am sad
B. You are making me sad
C. My sadness has given me a fever
D. My sadness is making me ill

6. Astrology is a subject of science? T or F
or, Which is science?
a. astrology
b. astronomy
c. gastronomy

7. Which of the following is required since results in the real world are almost never 100% consistent
a. Subjective vs objective tests
b. Independent controls
c. Statistical analysis

8. Who developed Mendelian genetics
a. Pasteur
b. Dr. Ronald Ross
c. Mendel

9. Which refers to the group that is not exposed to the variable in question
a. Subjective vs objective tests
b. Independent controls
c. Accuracy and precision

10. What step was Dr. Ross at when he dissected both the control and experimental (fed on infected individuals) groups and discovered that only the experimental group contained plasmodium in their stomach.
a. Collect information
b. State the problem
c. Test the hypothesis

E.C. "Cherry picking" refers to:
a. no attempt to publish in refereed journals
b. starts with a question
c. ignores facts that dont support conclusion



LECTURE QUIZ 2

1.  The first person that is recognized as having a strange new disease and die of it was:
a. a gay man
b. a drug user
c. a European woman

2. The first indication that this disease had a pattern of transmission from person to person was:
a. the blood supply
b. dirty needles shared by drug addicts
c. sexual contact cluster studies

3.  The first PROOF that this disease was INFECTIOUS was found in:
a. the blood supply
b. dirty needles shared by drug addicts
c. sexual contact cluster studies

4.  The bath houses were not closed for:
a. economic reasons
b. social reasons
c. political reasons
d. scientific reasons

5.  Blood testing for Hepatitis A (88% positive) was not done for:
a. economic reasons
b. social reasons
c. political reasons
d. scientific reasons

6.  AIDS research was not properly funded for:
a. economic reasons
b. social reasons
c. political reasons
d. scientific reasons

7.  What is most frightening about AIDS is:
a. it destroys the immune system
b. it is spread by blood and other bodily fluids
c. there are no symptoms for a long time after infection
d. all of the above

8.  Who first discovered that AIDS was caused by a virus?
a. The lab at the CDC - Don Francis
b. The lab of Robert Gallo
c. The lab of Luc Montagnier

9.  Who patented the first test for the AIDS virus using a stolen virus?
a. The lab at the CDC
b. The lab of Robert Gallo
c. The lab of Luc Montagnier

10.  Where was the phrase “what do we think, what do we know, what can we prove” heard all the time?
a. The lab at the CDC
b. The lab of Robert Gallo
c. The lab of Luc Montagnier


LECTURE QUIZ 3     NAME

1. The mass of an atom comes from:
a. neutrons and electrons
b. neutrons and protons
c. protons and electrons

2.  The charged particles of an atom are:
a. neutrons and electrons
b. neutrons and protons
c. protons and electrons

3. What is unique about each atom of a given element is:
a. the number of electrons
b. the number of neutrons
c. the number of protons

4. Draw an atom and label the parts.

5. Which is correct:  In space
a. mass but not weight changes
b. weight but not mass changes
c. matter but not mass changes

6. The density of gold is greater than tin.  A piece of each metal with identical weight is placed in a container of water with identical volumes.
a.  gold will displace a greater volume of water than tin
b.  tin will displace a greater volume of water than gold
c.  insufficient information to determine the answer

7. Which increases the density of matter
a. cold and pressure
b. heat and pressure
c. heat

8. Which phase is most easily compressed by pressure
a. gas
b. liquid
c. solid

9.  When steam/vapor is condensed back into water it gives off or releases
a. 1 cal per gram water
b. 79.7 cal per gram water
c. 539 cal per gram of water

10. Density is:
a. mass divided by weight (m/w)
b. mass divided by volume (m/v)
c. volume divided by mass (v/m)

e.c. Which is an inherent and fundamental property of atoms?
a. matter
b. weight
c. mass


LECTURE QUIZ 4      PRINT NAME CLEARLY–>

1. He, Ne, Ar are 3 of the noble gases. T or F

2. Sulfur is an alkali former. T or F

3.   H, Li, Na are elements that really want to give up that single outer electron.  T or F

4.  Non-metals are malleable, have high heat and electrical conductivity. T or F

5.  Only the outer electrons are involved in chemical reactions. T or F

6. The reason a gecko can climb walls or glass
a. covalent
b. hydrogen
c. ionic
d. van der Waals

7. Which bond(s) is due to electrostatic attraction?
A. covalent
B. hydrogen and ionic
C. ionic
D. van der waals

8. When silver is electroplated with gold what kind of a reaction is this?
a.  acid-base reactions
b.  polymerization reactions
c.  precipitation reactions
d.  redox reactions

9. The reaction that occurs when two soluble compounds are mixed together, and form a new more energetically stable arrangement which is not soluble.
A. acid-base
B. electrolysis
C. precipitation

10.  What is the "magic" number of outer electrons?

E.C. What is the reason that some chemical reactions occur naturally?



SCI 208 2012   EXAM 1

TRUE OR FALSE

1. Astronomy is a science.

2. Scientific theories can always be modified and/or proven wrong.

3. You feel the wind because gas molecules have mass.

4. H, Li, Na are elements that really want to give up that single outer electron.

5. A scientific thermometer is expected to be precise.

6. Only the outer electrons are involved in chemical reactions.

7. Most of an atom is empty space.

8. Mass is a fundamental property of matter.

9. “Cherry picking" means the author made no attempt to publish in refereed journals.

10. Solids have the highest kinetic energy.

11. All protons are interchangeable with other protons.

12. Na+Cl- is held together by hydrogen bonds.

13. Evaporation is the phase shift from a solid to a liquid.

14. Gold displaces more volume than tin.

15. 97% of all the surface water is in the ocean and is SALTY.

FILL IN THE BLANK

1.  What term is used for the group that is not exposed to the variable being investigated?

2.  Where is real science published? (2 words)

3.  What is the term used to describe a bathroom
scale gives the same wrong answer consistently?

4.  Who developed Mendelian genetics?

5. Who was the first person identified as having a strange new disease (later found to be HIV)?

6. Complete this Center for Disease Control manta: “what do we think, what do we know, what can we ______?

7. What is the "magic" number of outer electrons?

8. The basic, indivisible unit of all matter is called what?

9.  What is the bond that is the glue that holds us together and stores energy?

10.  What is a  paired reaction with one compound losing electrons and one gaining electrons called?

11.  A measure of how much matter is squeezed into a given volume is called?

12.  GAS --> LIQUID is:

13.  Which bond allows a Gecko to climb a wall?

14. What is the purpose of chemical reactions that occur naturally?

15. Draw an atom.

MULTIPLE CHOICE

1. Which one is NOT correct?
A. Science is a collection of facts
B. Science is the process of discovering the rules that govern the physical universe
C. Science deals with facts and observations which are testable and debatable

2. Which one of the following statements can be TESTED?
A. I am sad
B. You are making me sad
C. I am feeling sad
D. I think I have a fever

3. An example of a objective test is:
a. what is the temperature on that thermometer?
b. how did you do on the test?
c. how do you feel?

4. The first indication that this disease had a pattern of transmission from person to person was:
a. the blood supply
b. dirty needles shared by drug addicts
c. sexual contact cluster studies

5. The first PROOF that this disease was INFECTIOUS was found in:
a. the blood supply
b. dirty needles shared by drug addicts
c. sexual contact cluster studies

6. Who first discovered that AIDS was caused by a virus?
a. The lab at the CDC - Don Francis
b. The lab of Robert Gallo
c. The lab of Luc Montagnier

7. The bonds between separate molecules of water are called?
a. ionic bonds
b. van der Waals bonds
c. covalent bonds
d. hydrogen bonds

8. A silver spoon tarnishes, this reaction is:
a. polymerization reactions
b. precipitation reactions
c. acid-base reactions
d. redox reactions

9. Hydrogen weighs 1 AMU and has:
a. a neutron and an electron
b. a neutron, a proton and an electron
c. a neutron and a proton
d. a proton and an electron

10. The charged particles of an atom are:
a. neutrons and electrons
b. neutrons and protons
c. protons and electrons

11. What is unique about each atom of a given element:
a. the number of electrons
b. the number of neutrons
c. the number of protons

12. When water makes the phase change from 100oC liquid to vapor:
a. it loses a lot of energy (79.7 cal/gm)
b. it requires a lot of energy (539 cal/gm)
c. it requires a gain of only 1 cal/gm

13. Density is:
a. mass divided by weight (m/w)
b. mass divided by volume (m/v)
c. volume divided by mass (v/m)

14. Which increases the density of matter
a. cold and pressure
b. heat and pressure
c. heat

15. Which phase has a definite form
a. gas
b. liquid
c. solid

16. The reaction that occurs when two soluble compounds are mixed together, and form a new more energetically stable arrangement which is NOT soluble.
a. acid-base
b. electrolysis
c. precipitation

17. Which is NOT true of minerals
a.  naturally occurring
b. inorganic material
c. definite chemical compound
d. all the above are true

18. Rocks
a. are aggregates of minerals cemented together
b. have a definite crystalline structure
c. are silicates

19. Erosion
 a.  Is the steady breaking up of large chunks of rock into smaller pieces
 b.  Can be caused by acidic waters will dissolve some minerals
 c.  Is the movement of rocks and soil by water,
 glaciers, wind, gravity

20. Granite is what kind of rock
 a. igneous
 b. sedimentary
 c. metamorphic



Lecture quiz 5 structure Earth + evolution of Earth

1. What proof is there of the age of the Earth?
A. uranium dating
B. plutonium dating
C. zircon dating
D. carbon dating

2. Proof that water was abundant on Earth at 3.5 billion years
A. sedimentary rock
B. fossil evidence
C. formation of pillow lava
D. banded iron formation

3. What caused the formation of free oxygen?
A. plants evolved on land
B. bactera evolved in the water
C. plants evolved in the water

4. Which is formed in fresh water swamps?
A. oil
B. coal
C. both

5. Where do scientists think most of the water on Earth comes from?
A. volcanoes
B. comets
C. Earth rocks
D. meteorites

6. Which is associated with the death of the dinosaurs?
A. The meteor impact in theYucatan which created the Chicxulub crater
B. Evolution of blue green bacteria that makes oxygen
C. Snowball Earth
D. The mantle plume explosions in Siberia

7. The part of the earth that makes up the continents
a. core
b. crust
c. mantle
8. Part of earth responsible for the Van Allen belts
a. core
b. crust
c. mantle

9. Part of earth makes up the floor of the oceans
a. core
b. crust
c. mantle

10. Is the crust the same depth everywhere?



Lecture quiz 6 tectonics/movement of Earth and Moon

1. Which interaction forms the Himalayan Mountains
a. one thin, one thick plate
b. two thin plates
c. two thick plates

2. Which interaction forms Japan
a. one thin, one thick plate
b. two thin plates
c. two thick plates

3. Which interaction forms the Rocky Mountains
a. one thin, one thick plate
b. two thin plates
c. two thick plates
 

4. What is the mechanism that drives plate tectonics
a. sea floor spreading
b. subduction
c. induction
d. a and b

5. An observation that supports continental drift
a. fossils
b. geology
c. floor spreading at mid Atlantic trench

6. Seasons are due to:
A. the revolution of the moon around the earth
B. the rotation of the earth
C. the revolution of the earth around the sun

7. Which means equal day and night?
A. Solstice
B. Equinox
C. Hospice

8. What is season B called?

9. What is the day at position “3" called?

10. What is this phase of the moon called?

E.C. Give the degrees of inclination of the Earth’s axis.



LECTURE QUIZ 7 SCI 208

1. Fusion to helium requires how many hydrogen?
a. 2
b. 3
c. 4

2. Fusion is the?
a. breaking down of elements
b. the building up of elements
c. the transformation of elements

3. The “mass defect” means?
a.  as hydrogen is fused to helium some of the mass of the nuclei is lost
b.  mass is converted to energy by E= MC*2
c.  some energy is used as “binding energy” in the nucleus
d.  all of the above

4.  Which statement is correct?
a.  elements fuse and release energy up to carbon, then they require energy input to fuse any further
b.  elements fuse and release energy up to iron, then they require energy input to fuse any further
c.  elements fuse and release energy up to element 84, then they require energy to fuse any further

5.  Which statement is NOT correct?
a. at the stage when fusion requires energy this cools the sun which causes the sun to collapse
b. all heavy elements are made at the moment when a sun collapses, explodes and goes supernova
c. we all contain some material that originated in a supernova
d. our sun will go supernova someday

6.  Which has no mass?
a. alpha
b. beta
c. gamma

7. Which is the most penetrating radiation?
a. alpha
b. beta
c. gamma

8.  Fission involves?
a. outer electrons
b. inner electrons
c. the nucleus

9. Which can speed up or slow down radioactivity?
a. heating or freezing
b. chemical reactions with non-radioactive elements
c. nothing affects radioactive decay

10.  Which element is used to calculate the age of Earth?
a. carbon
b. sodium
c. uranium
d. lead



LECTURE QUIZ 8 SCI 208 2012 Fall

1. Which two things are there in the universe that are described by the equation E= MC*2 (squared)

2. There is the tendency for things to run down and become more random is?
a. 1st law of thermodynamics
b. 2nd law of thermodynamics
c. 3rd law of thermodynamics

3  Energy must be constantly put in to keep things going, there are no perpetual motion machines is?
a. 1st law of thermodynamics
b. 2nd law of thermodynamics
c. 3rd law of thermodynamics

4. We cant actually reach absolute zero which would prevent entropy
a. 1st law of thermodynamics
b. 2nd law of thermodynamics
c. 3rd law of thermodynamics

5. Which is true of conduction
a. heat moves from high to low energy
b. cold can suck the heat out of organic but not inorganic matter
c. is responsible for

6. Which is true of convection?
a. is the transfer of  thermal energy between molecules in a substance due to a temperature gradient.
b. the actual movement of molecules of liquids and AIR when they are heated
c. is responsible for burning hands on hot pots

7. Temperature of boiling water in Celsius
a. 100
b. 98
c. 37
d. 25

8. What is the difference between IR (infrared) and thermal heat?
9 .What can NOT be dated with carbon 14?
A. feces (aka poop)
B. salt
C. the Shroud of Turin
D. teeth

10. Which is more likely to release radon in the home?
A. granite countertops
B. sandstone floors
C. soil in the basement

E.C.  In the atmosphere Nitrogen (7 protons) is hit and makes C-14 (6 protons).  How does C-14 decay into Nitrogen?
A. alpha radiation
B. beta radiation
C. gamma radiation
D. X radiation



LECTURE QUIZ 9

1.  Energy from the sun comes in as visible light and:
a. goes out as visible light
b. goes out as IR
c. goes out as UV

2.  CO2 levels:
a. increase in summer, decrease in winter
b. decrease in summer, increase in winter
c. are steady all year long

3. CO2 levels have:
a. increased overall since monitoring started
b. decreased overall since monitoring started
c. remained the same since monitoring started

4.  The isotope ratio of what is used to detect temperature
a. CO2
b. O2
c.  N2

5.  Core drilling of ice in the Antarctica can show the temperature of the earth for the last
a. 1000 years
b. 10,000 years
c.  650,000 years

6.  During the above ice drillings which show the last 7 ice ages the concentration of CO2
a. never exceeds 30 ppm (parts per million)
b. never exceeds 300 ppm
c. never exceeds 3000 ppm

7.  Our current ppm of CO2 is
a. greater than ever recorded
b. less than the highest ever recorded
c. about the same for an inter-glacial period

8.  Hotter ocean water does what to hurricanes
a. decreases the number of them
b. increases the intensity
c. none of the above

9.  Global warming
a. increases rainfall worldwide
b. increases rainfall in some places, decreases rainfall in others
c. increases the amount of rainfall per storm
d. a and c
e. b and c

10.  Melting of which could raise the level of the ocean by 20 feet flooding out millions and millions of people
a. glaciers
b. Iceland
c. Antarctica



SCI 208 EXAM 2 Fall 2012

T&F use capital letters

1. The crust the same depth everywhere on Earth.
 
2. Oil is formed in fresh water swamps.

3. Seasons are due to the Earth being closer to the sun in winter.

4. It takes 4 hydrogen to make 1 helium.

5. Beta radiation has no mass.

6. Diamonds can be dated with Carbon 14

7. There are no perpetual motion machines.

8. Only the gas phase burns by thermal combustion.

9.  The isotope ratio of oxygen is used to detect temperature in core samples from Antarctica.

10. We cannot feel any of the waves of the EMS.

11. An incandescent bulb glows because of the resistance of tungsten wire.
 
12. Electrons actually do move in one direction in direct current.

13. Hydroelectric is a renewable energy source.

14. We cant actually reach absolute zero and prevent entropy.

15. Fission is the building up of elements.

Vocabulary:

1. Which part of the Earth makes up the continents?

2. What radioactive element is used to determine the age of the Earth?
 
3. Give the degrees of inclination of the Earth’s axis.

4. What are the three forms of radiation?

5. What does the “C” in E= MC*2 stand for?
(M does stand for mass, my mistake)

6. Which is the most penetrating radiation?

7. What is the third requirement for combustion in addition to organic matter and a source of ignition (match)?

8. What is the third product of combustion (candle) in addition to heat and infrared?

9. What happens to CO2 levels in the summer, do they increase or decrease?

10. Which part of the EMS can we see?

11. What is the flow of electrons past a point called?

12. Give an example of something you own that uses alternating current.
 
13. If electrons don’t actually move at the speed of light, then what does?

14. Give an example of something that uses passive solar energy.

15. What does “EMS” stand for?

Multiple choice. Use capitals

1. Part of earth makes up the floor of the oceans
a. core
b. crust
c. mantle
 
2. Which is associated with the death of the dinosaurs?
a. The meteor impact in theYucatan which created the Chicxulub crater
b. Evolution of blue green bacteria that makes oxygen
c. Snowball Earth

3. Which interaction forms the Rocky Mountains
a. one thin, one thick plate
b. two thin plates
c. two thick plates
 

4. Which means equal day and night?
a. Solstice
b. Equinox
c. Hospice
 
5. Which statement is correct?
a.  elements fuse and release energy up to carbon, then they require energy input to fuse any further
b.  elements fuse and release energy up to iron, then they require energy input to fuse any further
c.  elements fuse and release energy up to element 84, then they require energy to fuse any further

6. Fission involves?
a. outer electrons
b. inner electrons
c. the nucleus

7. There is the tendency for things to run down and become more random is?
a. 1st law of thermodynamics
b. 2nd law of thermodynamics
c. 3rd law of thermodynamics

8.  Temperature of boiling water in Celsius
a. 100
b. 98
c. 37

9. Core drilling of ice in the Antarctica can show the temperature of the earth for the last
a. 1000 years
b. 10,000 years
c.  650,000 years

10. Which can travel in a vacuum
a. light waves
b. radio waves
c. sound waves
d. a and b

11. Magnetism
a. is a force over distance, like mass
b. alters space
c. has "fields" or lines that emanate evenly in all directions
d. all of the above

12. Potential energy is
a. amperage
b. resistance
c. voltage

13. Which moves at the speed of light?
a. alternating current
b. direct current
c. both AC and DC

14. Hotter ocean water does what to hurricanes
a. decreases the number of them
b. increases the intensity
c. none of the above

15. The part of the atom that accumulates as a charge on surfaces
a. protons
b. neutrons
c. electrons

16. In which do electrons move back and forth with no net forward movement?
a. alternating current
b. direct current
c. both AC and DC

17. A good conductor is:
a. metals
b. plastics
c. glass

18. The ice drillings in Antarctica showed that in the last 7 ice ages the concentration of CO2
a. never exceeds 3 ppm (parts per million)
b. never exceeds 30 ppm
c. never exceeds 300 ppm

19. Which is true of convection?
a. is the transfer of  thermal energy between molecules in a substance due to a temperature gradient.
b. the actual movement of molecules of liquids and AIR when they are heated
c. is responsible for burning hands on hot pots

20. Which is more likely to release radon in the home?
a. granite counter tops
b. sandstone floors
c. soil in the basement



LECTURE QUIZ 10 Sci 208 fall 2012

1. What is the term used to describe the distance from one crest to the next crest?
a. frequency
b. velocity
c. wave length
 
2. What is the term used to describe the # of crests go by a given point per second?
a. frequency
b. velocity
c. wave length

3. What is the term used to describe the speed and direction of waves?
a. frequency
b. velocity
c. wave length

4. True or false: velocity for waves of the ems are constant at the speed of light in a vacuum.
 
5. Which is the speed of sound?
a. 600 mph
b. 768 mph
c. 670,616,628.6 mph

6. True or false: Sound can travel thru a vacuum?

7. Which describes “interference”?
a. Bend around solid or little slit
b. Enter clear materials and bends
c. Hit and bounce off surfaces
d. Run into each other

8. Select the terms that describe sound that is louder due to interference.
In phase, out of phase
constructive, destructive
amplification, cancellation

9. In the ear, what is the cochlea?

10.  What is "lensless photography" called (using the interference of laser light waves).



LECTURE QUIZ 11 Sci 208 fall 2012

1. When waves bends around solid matter this is called:
a. interference
b. diffraction
c. refraction
d. reflection

2. We see ourselves in a mirror due to this:
a. interference
b. diffraction
c. refraction
d. reflection

3. This is responsible for the colors we see:
a. interference
b. diffraction
c. refraction
d. reflection
 
4. When waves enter clear materials and bend it is due to this:
a. interference
b. diffraction
c. refraction
d. reflection

5. Surfaces are shiny or dull due to this:
a. interference and reflection
b. diffraction and interference
c. refraction and reflection
d. reflection and diffraction

6. The twinkle of diamonds and color of the rainbow are due to these:
a. interference and diffraction
b. diffraction and refraction
c. refraction and reflection
d. reflection and interference

7. When light moves from a lower index of refraction and enters a higher index of refraction it: (think carefully)
a. slows down
b. speeds up
c. stays the same if it enters perpendicular to the surface
 
8. The rainbow effect on DVDs is due to this:
a. interference
b. diffraction
c. refraction
d. reflection

9. The rolling thunder heard in lightning storms is due to this:
a. interference
b. diffraction
c. refraction
d. reflection

10. If you are going on an underwater dive to look for treasures (or view coral reefs), the best light that penetrates the water is:
a. morning
b. noon
c. sunset 



Lecture Quiz

1. A star moving away from us shows a spectrum shift towards
a. red
b. blue
c. green

2. A whistle of a train moving away from us will sound
a. louder in pitch
b. higher in pitch
c. lower in pitch

3. Which of the following cause a sonic boom
a. a plane going faster than mach 1
b. a bullet fired from a gun
c. a whip
d. all of the above

4. A dark shirt heats up in the sun due to
a. absorption
b. reflection
c. refraction

5. Rainbows are due to
a. absorption
b. reflection
c. both reflection and refraction

6. The wall is blue is due to
a. absorption
b. reflection
c. refraction

7. The rising moon has a path on the water
a. absorption
b. reflection
c. refraction

8. Oil slicks, butterfly and bird iridescent colors and holograms are due to
a. reflection
b. interference
c. refraction

9. The doppler radar used to spot tornadoes uses waves of
a. EMS
b. sound
c. water

10.  When waves bend around a solid it is due to
a. diffraction
b. interference
c. refraction

E.C. draw the waves of an item that is going mach 1


 T or F
3.  In constructive interference sound is softer.

4.  The iridescence of butterfly wings is an example of reflection and interference.

5.  In a diamond the speed of light drops to less than the speed of light in a vacuum.

6.  In a rainbow the red bends the most and is on the inside of the rainbow.

8.  A magnifying lens is concave.

9.  A sonic boom follows the entire path of a plane going greater than mach 1.

10. The speed of sound in air is more or less constant.

11. Waves of the EMS can be encoded to carry pictures and sound.

12. Light that enters glass on the perpendicular bends towards the normal.

13. Radar on one side of a hill can detect a speeding car on the other side of a hill.

15. The cornea is responsible for most of the eye's focusing power.

FILL IN THE BLANK

1. A galaxy moving away from Earth shows what kind of doppler shift?

4. The distance from one wave crest to another is called what?

5. What two things are happening to light waves in a soap bubble or any thin film?

6. What is happening to waves when a person can see themselves in a mirror?

7. The reason that sound can be heard around the corner is due to what happening to waves?

8.  What is the name given to pictures created by interference using lasers?

9. The dead spots of sound in concert halls are due to what kind of interference of waves?

10. Color is due to what happening to waves?
 

MULTIPLE CHOICE (use capital letters)

1.  Which is true?
a. as the wavelength increases, the frequency decreases
b. as the wavelength increases, the frequency increases
c. as the wavelength decreases, the frequency decreases

5.  In destructive interference light is:
a. dimmer
b. distorted
c. brighter

6. The color pattern seen on a CD or DVD is due to:
a. interference grating
b. diffraction grating
c. refraction grating
d. reflection grating

7. Glass that is “frosted” does what to light waves?
a. interference
b. diffraction
c. refraction
d. reflection
 
8. The long rumble of thunder is due to this happening to sound as it passes thru warmer and colder layers of air:
a. interference
b. diffraction
c. refraction
d. reflection

10. A magnifying glass set close to an object will create:
a. a virtual image right side up
b. a real image right side up
c. a real image upside down
d. a virtual image upside down

11. A whistle of a train moving away from us will sound
a. louder in pitch
b. higher in pitch
c. lower in pitch

13. How fast is the speed of sound in air?  (how many seconds between lightning flash and boom per mile?)
A. approximately one mile in 5 seconds
B. approximately one mile in 10 seconds
C. approximately one mile in 20 seconds

14. The speed of sound in WATER is?
A. slower
B. faster
C. the same as in air

15. What is moving in a sound wave?
A.  the energy front
B.  the molecules
C.  both A and B
 
19. Rainbows are due to what?
A. interference and reflection
B. refraction and reflection
C. reflection and interference
D. refraction and interference