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- 1. Multiple Choice
The diagram shows the relative positions of a light source, apple, paper, and person. The person can’t see the apple. Which of the following correctly describes the light interactions taking place in the diagram?
Light is absorbed by, not transmitted through, the paper.
Light is reflected off the apple, but absorbed by the light source.
Light from the light source is reflected only off the apple.
Light is transmitted through the paper and then reflected off the apple.
- 2. Multiple Choice
The idea that light is not matter is supported by which of the following evidence?
Light bounces off most objects.
Light can be separated into colors
Light can be absorbed by objects.
Light does not have mass or volume.
- 3. Multiple Choice
The diagrams provided here represent two light waves. Which conclusion is supported by the data provided in the diagrams?
Light Wave #1 will appear brighter than Light Wave #2.
Light Wave #1 will be a different color than Light Wave #2.
Light Wave #1 will reflect more easily than Light Wave #2.
Light Wave #1 will travel in a straight line, but not Light Wave #2.
- 4. Multiple Choice
A rainbow happens when sunlight passes through water droplets in the air. Which of the following best explains why?
Water droplets of different sizes filter out light of different colors.
Different chemicals in the water get energy and give off light of different colors.
Light of different colors travels at different speeds through different-sized water droplets.
Light of different wavelengths is bent at different angles.
- 5. Multiple Choice
Humans see different colors because our eyes are responding to light that is different in which characteristic?
Speed
Amplitude
Angle
Wavelength
- 6. Multiple Choice
A student places a pencil in a glass of water and observes that the pencil appears to be broken. Which of these provides the best explanation for why the pencil appears broken?
The pencil absorbs all the light rays that hit it.
Water reflects light rays away from the pencil.
Light rays are bent by the water in the glass
The surface of the water reflects light rays.
- 7. Multiple Choice
The illustration shows the path of a laser leaving a laser pointer. At what point is the laser being absorbed?
Point A
Point B
Point C
Point D
- 8. Multiple Choice
The distance from Earth to the moon can be accurately calculated by pointing high-powered lasers onto the moon’s surface. The time it takes for the light to return is used to find the distance. To make this possible, astronauts on the Apollo 11 moon mission had to place a device on the moon that would–
store the laser light for future use.
bounce the laser light back to Earth.
allow the laser light to pass through.
change the frequency of the laser light.
- 9. Multiple Choice
Which of the following is the best example of an object absorbing light?
A black sweater in the sun
A clean window in the sun
A curved mirror in the sun
A long shadow in the sun
- 10. Multiple Choice
Solar panels generate electricity using photovoltaic cells that receive sunlight. To protect these cells from moisture while allowing sunlight to pass through, engineers must design a cover for the solar panel that is–
waterproof and transmits light
very flexible and reflects light.
stronger than steel and bends light.
cold to the touch and absorbs light.
- 11. Multiple Choice
Which of the following natural surfaces would make a good mirror?
A fast-moving river
A blade of grass
A still lake
The ocean during a storm
- 12. Multiple Choice
5. The rearview mirror in most cars is flat. What driving situation is it most useful for? .
Judging actual distance of traffic behind you
Making sure no small child is sitting behind your car when you back up
Seeing a car in your blind spot
Putting on makeup while driving
- 13. Multiple Choice
Side-view mirrors in many cars are convex. What is one advantage of convex mirrors for this use?
Convex mirrors are more sturdy than flat mirrors
Convex mirrors show the image at the actual size of the object.
Convex mirrors have a very narrow field of view.
Convex mirrors always show the image right side up.
- 14. Multiple Choice
What type of mirror could have resulted in the image of the giraffe above?
Convex
Concave
Flat
Wavy
- 15. Multiple Choice
A sculpture named Sky Mirror in New York City reflects skyscrapers upside down and smaller than they are in real life. What type of reflective surface does this sculpture most likely have?
Convex
Concave
Flat
Wavy
- 16. Multiple Choice
The ray of light traveling towards the mirror is called the ____________ ray.
incident
accidental
normal
reflected
- 17. Multiple Choice
The statements below compare the similarities of ultraviolet light and microwaves. Which choice does NOT belong in this list?
Neither can be seen by the human eye.
. Scientists use both to study the structure of galaxies.
They both have wavelengths that are longer than visible light
They are both types of radiation emitted by the Sun.
- 18. Multiple Choice
What is the best wavelength to use if an astronomer wants to study the composition of planets and stars?
Gamma rays
Radio waves
Visible light
Microwaves
- 19. Multiple Choice
Complete the following analogy. RADIO WAVES : LONGEST WAVELENGTH :: ____________ : SHORTEST WAVELENGTH
INFRARED LIGHT
ULTRAVIOLET LIGHT
X-RAYS
GAMMA RAYS
- 20. Multiple Choice
Examine the diagram of the electromagnetic spectrum shown above. Which category of electromagnetic waves has a wavelength of 10-8 m?
Ultraviolet
Radio waves
Microwaves
Red
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