Grade 3 Skills Workbook (Unit 5) — Comprehension Quiz

Topic: Light, Spelling Patterns, and Adverbs

Multiple-Choice Questions

1. What is the Content Word for this week's spelling list?
A. reflect
B. electricity
C. energy
D. wavelength

2. What two Challenge Words were assigned this week?
A. almost and really
B. secret and chief
C. money and enemy
D. scenic and grease

3. How fast does light travel in a vacuum?
A. 106,000 miles a second
B. 126,000 miles a second
C. 156,000 miles a second
D. 186,000 miles a second

4. How does all light travel?
A. In the form of sources
B. In the form of waves
C. In the form of groups
D. In the form of gases

5. What determines whether you can see a light wave or not?
A. the speed of the source
B. the length of the source
C. the speed of the wave
D. the length of the wave

6. In the sentence "The moon does, however, reflect light from the sun," what does reflect mean?
A. send back
B. make
C. absorb
D. create

7. In the sentence "We waited ______ for our turn to look through the telescope," which adverb correctly completes it (formed from "patient")?
A. patiently
B. patiental
C. impatient
D. patients

8. According to the reader, how many times can light travel around Earth every second?
A. three times
B. five times
C. seven times
D. ten times

Short-Answer Questions

9. Describe white light, according to the reading.

10. List three sources of light mentioned or implied in the chapter "What Is Light?"

11. Explain why the sun looks yellow when we see it against the blue sky, even though its light contains all colors.

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Answer Key

1. B — electricity
2. A — almost and really
3. D — 186,000 miles a second
4. B — in the form of waves
5. D — the length of the wave
6. A — send back
7. A — patiently
8. C — seven times
9. White light is made up of all the colors of the rainbow; it includes light of different wavelengths, including all the colors we can see (not colorless, not just yellow).
10. Answers may include the sun and other light sources described in the chapter (accept reasonable responses based on lesson content, such as the sun as the greatest source of light).
11. There is just a little more of the yellow wavelengths than the other colors in sunlight, which is why the sun appears yellow against the blue sky, even though it contains all colors/wavelengths.