29. Light rays are bent and brought together by a
_____.
a. convex lens
b. concave lens
c. opaque lens
d. transparent lens
30. When we see a colored object, what are we really
seeing?
a. light that has been absorbed
b. light that has not been absorbed
c. light that has been refracted
d. light that has not been refracted
31. A hand lens is a ____.
a. prism
b. convex lens
c. translucent lens
d. concave lens
32.Which of the following surfaces would bounce back
almost all the light waves that hit it?
a. a white wall
b. a piece of plastic wrap
c. a stained-glass window
d. a mirror
33. Light travels in _____ waves.
a. transverse
b. compression
c. radio
d. concave
34. A _____ is a curved, transparent object that can
bend light.
a. frequency
b. mirror
c. window
d. lens
35. A beam of _____ light contains all the colors in a
rainbow.
a. white
b. black
c. red
d. blue
36. A homeowner wants to install a skylight to get as
much light as possible into a dark upstairs hallway.
What kind of glass should she use?
a. mirrored
b. opaque
c. translucent
d. transparent
37. You stand in front of a window. A friend waves to
you from outside. Why can you see your friend clearly?
a. The glass is a prism.
b. The glass is translucent.
c. The glass is opaque.
d. The glass is transparent.
38. What happens if you shine a flashlight on a mirror
in a dark room?
a. The light causes the mirror to get warm.
b. The mirror reflects the light back to you.
c. The light passes through the mirror.
d. The mirror absorbs all the light.
39. A lens that is thicker in the middle than at the
edges is _____.
a. convex
b. concave
c. light-reflecting
d. prismatic
40. Marcia wraps a book in wax paper. She can see the
book’s title, but the letters look fuzzy. Why?
a. The wax paper is transparent.
b. The wax paper is translucent.
c. The wax paper is concave.
d. The wax paper is convex.
41. Why can you see an arch of colors in the sky on a
rainy day?
a. Raindrops act like convex lenses.
b. Raindrops act like concave lenses.
c. Raindrops act like prisms.
d. Raindrops act like rainbows.
42. A microscope makes objects look larger than they
actually are. Which kind of lens does it contain?
a. opaque
b. translucent
c. concave
d. convex
43. You stand in front of your friend. Your friend
hides behind you. Why can’t people see your friend?
a. You are transparent.
b. You are translucent.
c. Your are opaque.
d. You are concave.
44. Which of the following should you use to
demonstrate how light reflects off a smooth surface?
a. a convex lens
b. a mirror
c. wax paper
d. a concave lens