SECTION 4-2
REVIEW AND REINFORCE
Refraction and Lenses
• Understanding Main Ideas
...
Biology, 14.02.2021 22:40 littlebrain2672
SECTION 4-2
REVIEW AND REINFORCE
Refraction and Lenses
• Understanding Main Ideas
Answer Questions 1 - 3 on a separate sheet of paper.
Figure 1
Figure 2
1. What kind of lens is pictured in Figure 1?
2. What kind of lens is pictured in Figure 2?
3. On the diagram, show how the direction of the parallel rays changes after they
pass through each lens.
4. What causes light rays to bend?
5. What kind of image is formed by a concave lens?
6. Describe the two possibilities for an image formed by a convex lens.
• Building Vocabulary
Fill in the blank to complete each sentence.
7. A(n)
is an image of a distant object caused by light refraction
through air of varying temperature.
8. A(n)
is a curved piece of glass or other transparent substance
that is used to refract light.
9. A(n)
lens is thicker in the center than at the edges.
10. A(n)
lens is thinner in the center than at the edges.
11. The
is a measure of how much a ray of light
bends when it passes from one medium into another.
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