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Shadows and transparent, translucent and opaque materials

3rd grade (Year 4 in England) · 16 questions · Common Core: NGSS.1-PS4-3 · England: KS2 Y3 Light

Name

Date

Score/ 16

1
Question 1
Why does a shadow have the same shape as the object?
- A. Light travels in straight lines past the edges of the object
- B. Light bends around the object
- C. The object is a light source
- D. Shadows copy objects on purpose
2
Question 2
Which material is transparent?
- A. a thin cotton sheet
- B. air
- C. cardboard
- D. frosted glass
3
Question 3
Is air transparent, translucent or opaque?
- A. transparent
- B. translucent
- C. opaque
4
Question 4
At what time of day is your shadow shortest?
- A. it is always the same
- B. around midday, when the Sun is highest
- C. early morning
- D. late evening
5
Question 5
Which material is translucent?
- A. wood
- B. frosted glass
- C. a brick
- D. aluminium (aluminum) foil
6
Question 6
Is greaseproof (wax) paper transparent, translucent or opaque?
- A. transparent
- B. translucent
- C. opaque
7
Question 7
Why does a shadow have the same shape as the object?
- A. The object is a light source
- B. Shadows copy objects on purpose
- C. Light travels in straight lines past the edges of the object
- D. Light bends around the object
8
Question 8
Which material is transparent?
- A. a metal tray
- B. a thin cotton sheet
- C. air
- D. frosted glass
9
Question 9
Is clear glass transparent, translucent or opaque?
- A. transparent
- B. translucent
- C. opaque
10
Question 10
Why does a shadow have the same shape as the object?
- A. Light bends around the object
- B. The object is a light source
- C. Shadows copy objects on purpose
- D. Light travels in straight lines past the edges of the object
11
Question 11
Which material is transparent?
- A. a thin cotton sheet
- B. cardboard
- C. clear glass
- D. a metal tray
12
Question 12
Is wood transparent, translucent or opaque?
- A. transparent
- B. translucent
- C. opaque
13
Question 13
Why does a shadow have the same shape as the object?
- A. Light bends around the object
- B. Shadows copy objects on purpose
- C. Light travels in straight lines past the edges of the object
- D. The object is a light source
14
Question 14
Which material is transparent?
- A. clear water
- B. tracing paper
- C. a thin cotton sheet
- D. frosted glass
15
Question 15
Is clear glass transparent, translucent or opaque?
- A. transparent
- B. translucent
- C. opaque
16
Question 16
At what time of day is your shadow shortest?
- A. around midday, when the Sun is highest
- B. late evening
- C. it is always the same
- D. early morning

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Answer key: Shadows and transparent, translucent and opaque materials

1. A. Light travels in straight lines past the edges of the object
2. B. air
3. A. transparent
4. B. around midday, when the Sun is highest
5. B. frosted glass
6. B. translucent
7. C. Light travels in straight lines past the edges of the object
8. C. air
9. A. transparent
10. D. Light travels in straight lines past the edges of the object
11. C. clear glass
12. C. opaque
13. C. Light travels in straight lines past the edges of the object
14. A. clear water
15. A. transparent
16. A. around midday, when the Sun is highest