Grade 4 Light & optics worksheet

What is on the worksheet

1. Which one lets light pass through so you can see clearly through it: a wooden door or clean water in a glass?

   1. a wooden door
   2. clean water in a glass

2. Which one makes its own light: a firefly or a mirror?

   1. a mirror
   2. a firefly

3. Which one makes its own light: the Sun or the Moon?

   1. the Sun
   2. the Moon

4. Which one lets light pass through so you can see clearly through it: a cardboard box or clear window glass?

   1. a cardboard box
   2. clear window glass

5. Which one lets light pass through so you can see clearly through it: a thick book or clear plastic wrap?

   1. a thick book
   2. clear plastic wrap

6. Which one lets light pass through so you can see clearly through it: clean water in a glass or a cardboard box?

   1. a cardboard box
   2. clean water in a glass

7. Which one makes its own light: a lamp that is switched on or a bicycle reflector?

   1. a lamp that is switched on
   2. a bicycle reflector

8. Which one makes its own light: a shiny spoon or a lamp that is switched on?

   1. a lamp that is switched on
   2. a shiny spoon

9. Which one lets light pass through so you can see clearly through it: a wooden door or clear plastic wrap?

   1. clear plastic wrap
   2. a wooden door

10. Which one makes its own light: a flashlight that is on or a white sheet of paper?

    1. a flashlight that is on
    2. a white sheet of paper

11. Which one lets light pass through so you can see clearly through it: clear window glass or a brick wall?

    1. a brick wall
    2. clear window glass

12. Which one lets light pass through so you can see clearly through it: a brick wall or clear plastic wrap?

    1. a brick wall
    2. clear plastic wrap

13. Which one makes its own light: the Moon or a flashlight that is on?

    1. a flashlight that is on
    2. the Moon

14. You stand outside with the Sun behind you. Where is your shadow?

    1. in front of you
    2. behind you
    3. above your head

15. Which one lets light pass through so you can see clearly through it: clean water in a glass or a wooden door?

    1. clean water in a glass
    2. a wooden door

16. Which one lets light pass through so you can see clearly through it: a cardboard box or clear plastic wrap?

    1. a cardboard box
    2. clear plastic wrap

17. Which one lets light pass through so you can see clearly through it: a thick book or clear window glass?

    1. clear window glass
    2. a thick book

18. Which one makes its own light: a lamp that is switched on or a white sheet of paper?

    1. a white sheet of paper
    2. a lamp that is switched on

19. Which one makes its own light: a white sheet of paper or a firefly?

    1. a firefly
    2. a white sheet of paper

20. Which one makes its own light: the Moon or a firefly?

    1. the Moon
    2. a firefly