Objective – Describe how light can be produced, reflected, refracted, and separated into visible light of various colors.

Name ______

Principles of LightStudy Guide

Objective 2: Describe how light can be produced, reflected, refracted, and separated into visible light of various colors.

  1. Compare light from various sources (e.g., intensity, direction, color).
  2. Compare the reflection of light from various surfaces (e.g., loss of light, angle of reflection, reflected color).
  3. Investigate and describe the refraction of light passing through various materials (e.g., prisms, water).
  4. Predict and test the behavior of light interacting with various fluids (e.g., light transmission through fluids, refraction of light).
  5. Predict and test the appearance of various materials when light of different colors is shone on the material.

I can…

_____1. recognize light sources.

_____2. explain reflection.

_____3. distinguish between the angle of incidence and the

angle of reflection.

_____4. define the law of reflection.

_____5. explain why we see color.

_____6. define and give examples of refraction.

_____7. list three things that happen when light hits an object.

_____8. define and use unit vocabulary properly.

1. Recognize light sources.

a. Define “light source.” ______

______

b. Give five examples of light sources.

1. ______

2. ______

3. ______

4. ______

5. ______

c. Why is the Moon not considered a light source? ______

______

2. Explain reflection.

a. Define “reflection.” ______

______

b. Explain why we see things. ______

______

c. Describe why we see the “color” white. ______

______

d. Give details about why we see the “color” black. ______

______

3. Distinguish between the angle of incidence and the angle of reflection.

a. Using the diagram below, identify the angle of incidence and the angle of reflection.

4. Define the law of reflection.

a. Define – ______

______

b. You have been given the measurement of one angle.Identify the measurement of the other angle.

5. Explain why we see color.

a. Why do we see colors?Why would we see something green? ______

______

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b. What is the spectrum? ______

______

c. What does a prism do? ______

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d. How are water drops in the atmosphere able to make a rainbow? ______

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e. List the colors of the rainbow.

1. ______

2. ______

3. ______

4. ______

5. ______

6. ______

7. ______

6. Define and give examples of refraction.

a. Refraction – ______

______

b. Describe what happens when you place a straw in a glass of water? ______

______

c. You are standing in a swimming pool and see a rock on the bottom.You reach for it, but it’s not where you reached.Explain why you missed picking up the rock.

______

______

______

7. List three things that happen when light hits an object.

a. Transparent – ______

______

b. Translucent – ______

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c. Opaque – ______

______

8. Define and use unit vocabulary properly.

Complete the puzzle using the clues shown below.

Created with Discovery Channel School's PuzzleMaker.

Across

3. Semi-transparent. Light is diffuse (fuzzy) looking as it passes through it.

4. The angle that the light ray hits an object.

5. Does not let light pass through it.

6. Allows light to pass through it.

9. All light that hits an object is not reflect. It is absorbed by the object (example – a black shirt).

10. The angle that the light-ray reflects off the object.

Down

1. Light bouncing off an object.

2. The bending of light.

7. An object that refracts light and shows the color of the spectrum.

8. The colors white light is made of red, orange, yellow, green, blue, indigo, and violet (ROY G BIV).

~L1a~