!! 50 points spent, easy points for you. 8th-grade science/physics !!
1. A(n) ______ is an image of a distant object caused by light refraction through air of varying temperature.
2. A(n) ______ is a curved piece of glass or other transparent substance that is used to refract light.
3. A(n) ______ lens is thicker in the center than at the edges.
4. A(n) ______ lens is thinner in the center than at the edges.
5. The ______ is a measure of how much a ray of light bends when it passes from one medium into another.