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Clear, cloudy or blocking? How much light gets through

1st grade (Year 2 in England) · 16 questions · Common Core: NGSS.1-PS4-3 · England: KS2 Y3 Light, KS1 Y1 Everyday materials

Name

Date

Score/ 16

1
Question 1
Which material is best for curtains that keep a bedroom dark on summer mornings?
- A. thin tissue paper
- B. frosted glass
- C. thick opaque blackout fabric
- D. clear plastic
2
Question 2
How much light passes through this: a thin cotton sheet?
- A. transparent (lets almost all light through)
- B. translucent (lets some light through)
- C. opaque (lets no light through)
3
Question 3
Which of these is translucent?
- A. a clear glass window
- B. baking paper (wax paper)
- C. a thick book
- D. clean water
4
Question 4
Why are greenhouses made of clear glass or plastic?
- A. to stop rain falling on the roof
- B. because glass is soft
- C. so sunlight can reach the plants inside
- D. to keep plants in the dark
5
Question 5
How much light passes through this: a thick book?
- A. transparent (lets almost all light through)
- B. translucent (lets some light through)
- C. opaque (lets no light through)
6
Question 6
Which of these is translucent?
- A. cling film (plastic wrap)
- B. a thin cotton sheet
- C. a brick wall
- D. a metal tray
7
Question 7
Why are greenhouses made of clear glass or plastic?
- A. to stop rain falling on the roof
- B. to keep plants in the dark
- C. so sunlight can reach the plants inside
- D. because glass is soft
8
Question 8
How much light passes through this: baking paper (wax paper)?
- A. transparent (lets almost all light through)
- B. translucent (lets some light through)
- C. opaque (lets no light through)
9
Question 9
Which of these is transparent?
- A. a clear plastic bottle
- B. a brick wall
- C. a thin cotton sheet
- D. a thick book
10
Question 10
Which would make the darkest shadow?
- A. a wooden block
- B. a glass of clean water
- C. a sheet of tissue paper
- D. a clear plastic cup
11
Question 11
How much light passes through this: a brick wall?
- A. transparent (lets almost all light through)
- B. translucent (lets some light through)
- C. opaque (lets no light through)
12
Question 12
Which of these is transparent?
- A. aluminium (aluminum) foil
- B. a thick book
- C. a thin cotton sheet
- D. cling film (plastic wrap)
13
Question 13
A bathroom window needs to let light in but stop people seeing in. Which glass is best?
- A. frosted (translucent) glass
- B. a mirror facing in
- C. a metal sheet
- D. clear (transparent) glass
14
Question 14
How much light passes through this: a thin cotton sheet?
- A. transparent (lets almost all light through)
- B. translucent (lets some light through)
- C. opaque (lets no light through)
15
Question 15
Which of these is opaque?
- A. clean water
- B. aluminium (aluminum) foil
- C. cling film (plastic wrap)
- D. tissue paper
16
Question 16
Why are greenhouses made of clear glass or plastic?
- A. to keep plants in the dark
- B. because glass is soft
- C. to stop rain falling on the roof
- D. so sunlight can reach the plants inside

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Answer key: Clear, cloudy or blocking? How much light gets through

1. C. thick opaque blackout fabric
2. B. translucent (lets some light through)
3. B. baking paper (wax paper)
4. C. so sunlight can reach the plants inside
5. C. opaque (lets no light through)
6. B. a thin cotton sheet
7. C. so sunlight can reach the plants inside
8. B. translucent (lets some light through)
9. A. a clear plastic bottle
10. A. a wooden block
11. C. opaque (lets no light through)
12. D. cling film (plastic wrap)
13. A. frosted (translucent) glass
14. B. translucent (lets some light through)
15. B. aluminium (aluminum) foil
16. D. so sunlight can reach the plants inside