Light: Unit 4 Study Guide (In case you have misplaced your copy)

Unit 4 Test Study Guide

Vocabulary

(You should be able to define with words, match a picture, and give examples)

Reflect

Refract

Absorb

Emit

Incident Light

Law of Reflection

Scattering

Transmit

Fiber Optics

Photon

Concave Mirrors

Convex Mirrors

Concave Lenses

Convex Lenses

Frequency

Wavelength (λ)

Amplitude

Metamaterials

Negative refraction

Focal point

Electromagnetic spectrum

Roy G. Biv

Radiation

Internal reflection

Transparent

Translucent

Opaque

Chromatic aberration: *The material effect produced by the refraction of different wavelengths of electromagnetic radiation through slightly different angles, resulting in a failure to focus. It causes colored fringes in the images produced by uncorrected lenses.

*Source: Google search engine

Concepts

1. Light acts as both a _____________ and a _________________
2. Give an example of natural light and artificial light
3. Light travels the fastest in _________________. Explain why.
4. How do we see? Use at least 4 vocabulary words
5. What is metamaterial? How does it work? How can we use it?
6. What can color tell us?
7. A light’s color depends most on its __________
8. How are different types of radiation arranged along the electromagnetic spectrum?
9. What do all forms of electromagnetic radiation have in common?
10. How is mixing the primary pigment colors together different from mixing the primary colors of light together?
11. In which situation would the person most likely see a rainbow?
12. How is wavelength related to energy?
    If the wavelength is long, then the energy is ______
    If the wavelength is short, then the energy is ______
13.  What makes each light color bend differently?
    If the wavelength is long, then it bends at a ____ angle
    If the wavelength is short, then it bends at a ____ angle
14.  How is the color of the rainbow related to its energy?
    The color with the most energy is ______
    The color with the least energy is ______
15. How do scientists use color to determine how hot a star is?
    Blue stars are the ___________
    Red stars are the __________
16. Give an example of how we use the following types of rays:

1. 1. Radio waves
   2. Microwaves
   3. Infrared waves
   4. Ultraviolet waves
   5. X-ray waves
   6. Gamma ray waves

17. Relationship between wavelength and frequency

As the wavelength increases the frequency ____________

As the wavelength decreases the frequency ___________

18. Relationship between frequency and energy

As the frequency increases the energy ___________

As the frequency decreases the energy ___________

19. Label all the parts of a wave

20. Use the triangle to calculate speed (m/s), wavelength (λ called lambda and measured in m), and frequency (Hz, use 1/sec in your calculations).

EC. Make connections about how a mirrors and lenses are alike