Download Study guide_2

Light and Optics:
Unit Exam Study Guide
1. Explain the theories of light based on ideas from the following individuals:
a. Archimedes
b. Pythagoras
c. Newton
d. Antonie van Leeuwenhoek
e. Galileo
2. Identify artificial and natural sources of light.
3. Define the following:
a. Incandescent light
b. Fluorescent light
c. Phosphorescent light
d. Chemiluminescent light
e. Bioluminescent light
4. Explain what a ray is and what 3 things a ray diagram tells us about the path of light.
5. Use a ray diagram to explain the sizes of shadows.
6. Define the Law of Reflection. Use a diagram to help your explanation.
7. Draw concave and convex mirror.
8. Use a diagram to demonstrate how light behaves when it strikes a concave and convex
mirror. Give examples of where you would find these types of mirrors.
9. Define refraction. What causes light to refract?
10. What is the difference between a concave LENS and a concave MIRROR?
11. What is the difference between a convex LENS and a convex MIRROR?
12. Use a diagram to demonstrate how light refracts when it travels through a concave and
convex lens. Give examples of where you would find these types of lenses.
13. Label the following diagram of the eye.
14. What is the role of the rods and cones?
15. How is the retina like a “movie screen”?
16. Describe how images are formed in the eye and sent to the brain.
17. How is a camera like your eye? Compare the two and identify parts that have similar roles.
18. List two optical devices and how they work.
19. Define the following:
a. Crest
b. Trough
c. Frequency
d. Wavelength
e. Amplitude
20. Briefly describe how light is thought of as a wave.
21. List the types of light energy in the electromagnetic spectrum from longest to shortest
wavelength.
22. For each part of the EM spectrum listed below, give an example of how we use / interact
with this type of energy.
a. Radio waves
b. Infrared rays
c. Ultraviolet (UV) light
d. X-rays
23. Explain how we see colour.
24. What are the primary colours of light?
25. Describe how you could prove or test the following statement: White light is a combination
of colours.