Glossary activity

2. lens that curves inwards
5. a measure of how easily light passes through a material is called it's ........ Index
7. Bending of light
8. I strument used to measure temperature
10. substance that allows heat to flow
11. energy that enables us to see
13. Heat can occur through a vaccuum
14. The part of the eye on which an image forms

1. a transparent piece of plastic or glass that is shaped to curve outwards or inwards
2. Heat transfer through a liquid or a gas
3. what does when it hits a mirror
4. an object that releases or emits light is
6. at greater angles of incidence than this, light is totally internally reflected
9. magnet lights form a energy called ........... Radiation
12. lens that bulges outwards