Reflection
What happens when light waves hit a mirror?
a. They are absorbed.
b. They are reflected.
c. They are scattered.
d. They are refracted.
b. They are reflected.
What is the effect of absorption on an object's temperature?
a. It cools down.
b. It remains the same.
c. It becomes hotter.
d. It freezes.
It becomes hotter.
What does diffraction cause light waves to do?
a. Travel in a straight line.
b. Bend and spread around obstacles.
c. Change color.
d. Increase in speed.
b. Bend and spread around obstacles.
What does refraction cause light to do when it enters water?
a. Speed up.
b. Slow down and bend.
c. Change color.
d. Scatter.
b. Slow down and bend.
What are ultraviolet (UV) waves compared to visible light?
a. They have longer wavelengths
b. They have shorter wavelengths
c. They are visible to the human eye
d. They are the same as infrared waves
b. They have shorter wavelengths
Which color of light is reflected by an object?
a. All colors.
b. The color of the object.
c. The colors that the object is not.
d. None of the above.
b. The color of the object.
What kind of objects absorb more light energy?
a. Dark-colored objects
b. Light-colored objects
c. Transparent objects
d. Shiny objects
Dark-colored objects
What is the reason the sky appears blue?
a. Blue light is absorbed by the atmosphere.
b. Blue light is scattered by gases in the atmosphere.
c. All colors are absorbed equally.
d. Blue light travels faster than other colors.
b. Blue light is scattered by gases in the atmosphere.
Which of the following will REFLECT the most light?
a. Many rays hitting a glass surface with a silver layer behind it
b. Many rays hitting a half glass and half silver surface
c. Many rays hitting a slightly dusty glass surface with impurities
a. Many rays hitting a glass surface with a silver layer behind it
Which type of UV rays is the most harmful?
a. UV-A
b. UV-B
c. UV-C
d. UV-D
c. UV-C
Bounces off defines…
a. independent variable.
b. reflect.
c. sense receptor.
b. reflect.
How does melanin affect the appearance of skin in UV light?
a. Makes it look lighter
b. Makes it glow
c. Absorbs UV light and appears darker
d. Has no affect
c. Absorbs UV light and appears darker
What process is involved in making a mirror by adding a thick layer of smooth metal on the back of the glass?
a. Silvering
b. Painting
c. Coating
d. Polishing
a. Silvering
What happens when light shines on a regular mirror?
a. The mirror transmits nearly all the light.
b. The mirror reflects nearly all the light.
c. The mirror absorbs nearly all the light.
d. The mirror becomes invisible.
b. The mirror reflects nearly all the light.
What does the world look like through a UV camera compared to visible light?
a. Colorful and bright
b. Black and white
c. Completely invisible
d. Normal
a. Colorful and bright
Why can we see most objects around us?
a. Because they absorb all the light.
b. Because they do not interact with light.
c. Because they reflect some amount of light.
a. Because they emit their own light.
c. Because they reflect some amount of light.
What happens to the light that is not reflected by an object? (Choose 3.)
a. It disappears.
b. It is transmitted.
c. It is scattered.
d. It is absorbed.
b. It is transmitted.
c. It is scattered.
d. It is absorbed.
How is a one-way mirror different from both glass and a regular mirror?
a. It reflects no light.
b. It absorbs all the light.
c. It reflects and transmits light in almost equal amounts.
d. It reflects all the light in one direction.
c. It reflects and transmits light in almost equal amounts.
What happens when light shines on an object?
a. It disappears.
b. It absorbs all the light.
c. It reflects off, transmits through, or is absorbed, depending on the material.
d. It turns into a different color.
c. It reflects off, transmits through, or is absorbed, depending on the material.
What happens to ultraviolet light in the atmosphere?
a. It is absorbed completely.
b. It is scattered more than other wavelengths.
c. It is reflected back into space.
d. It is intensified.
b. It is scattered more than other wavelengths.
What is the primary reason that most of the light REFLECTS off the one-way mirror?
a. Impurities and dust on the glass
b. Thick silver layer
c. The paint layer
d. Chocolate cake
b. Thick silver layer
Why is a piece of glass transparent, but not completely so?
a. It reflects all the light.
b. It absorbs all the light
c. It transmits most of the light but reflects and absorbs some due to impurities and dust.
d. It transmits no light at all.
c. It transmits most of the light but reflects and absorbs some due to impurities and dust.
Light travels in…
a. a curved path.
b. a straight path.
c. a spaceship
b. a straight path.
Which of the following will TRANSMIT the most light?
a. Many rays hitting a glass surface with a silver layer behind it
b. Many rays hitting a half glass and half silver surface
c. Many rays hitting a slightly dusty glass surface with impurities
c. Many rays hitting a slightly dusty glass surface with impurities
Why do clouds appear hazy in UV light?
a. They absorb all UV light.
b. They scatter UV light.
c. They emit light.
d. The are not visible.
b. They scatter UV light.