Page 87 - Science Course 3 (Book 2)

Mo10-L5: Vocabulary Review

Direction: Use the clues and the terms listed below to complete the puzzle.

light ray light source opaque translucent transparent

Across
1. a narrow beam of light

3. describes a material that allows
all light to pass through and forms
a clear image

4. describes a material that does not
allow light to pass through it

Down
1. something that emits light

2. describes a material that allows
light to pass through but forms a
blurry image.

Mo10-L5: Key Concept Organizer

Direction: Write the letter of each wave on the line before its possible speed. Each term is used only
once.

1. 4,540 m/s A. sound through iron
2. 193,000 km/s B. light through air
3. 331 m/s C. sound through water
4. 225,000 km/s D. light through a vacuum

5. 5,100 m/s E. sound through glass
6. 300,000 km/s F. light through water
7. 1,500 m/s G. sound through air
8. 299,920 km/s H. light through glass

9. Which material listed above is actually the absence of a material?

10. What kind of waves is light made up of?

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