Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 562 · 40 questions

What you do (Bounce, bounce, see): 1. An adult cuts a window near the top on one side of the carton and near the bottom on the other. 2. Tape one mirror at 45° behind each window, the two mirrors facing each other. 3. Look into the bottom window and adjust the mirrors until the view is clear. 4. Peep over a table or wall — never point it at the Sun.

1. 1.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) a ruler (c) two small mirrors (d) a balloon
2. 2.🧺 Do we need a balloon for the periscope? (a) not needed (b) needed
3. 3.🔭 Which of these reflects light well? (a) black cloth (b) a dull brick (c) dark soil (d) aluminium foil
4. 4.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) vinegar (c) two small mirrors (d) yeast
5. 5.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we keep it the same (b) we change it (c) we measure it
6. 6.True or false: an empty juice carton is not needed for the periscope. (a) True (b) False
7. 7.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is the one thing we change. (a) True (b) False
8. 8.True or false: a mirror reflects light poorly. (a) True (b) False
9. 9.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is the one thing we change. (a) True (b) False
10. 10.🛟 Who should cut the holes in the juice carton? (a) nobody needs to (b) the youngest child (c) a grown-up (d) a friend who is running
11. 11.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is the one thing we change. (a) True (b) False
12. 12.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) the ground (c) taller walls (d) nothing at all
13. 13.🔍 Which is the odd one out? (a) dark soil (b) a mirror (c) a dull brick (d) a rough wooden board
14. 14.True or false: dark soil reflects light well. (a) True (b) False
15. 15.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is what we measure. (a) False (b) True
16. 16.True or false: two small mirrors is needed for the periscope. (a) True (b) False
17. 17.🔭 How many mirrors does a simple periscope use?
18. 18.🔭 What does a periscope let you do? (a) see in the dark (b) see germs (c) see over a wall (d) hear far sounds
19. 19.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) turmeric powder (c) a ruler (d) an empty juice carton
20. 20.🔭 How many times does light bounce off a mirror in a simple periscope?
21. 21.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) loose glass panes (c) plastic safety mirrors (d) big wall mirrors
22. 22.🔍 Which is the odd one out? (a) a rough wooden board (b) still clear water (c) a shiny steel plate (d) aluminium foil
23. 23.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
24. 24.🔭 Which of these reflects light well? (a) a rough wooden board (b) a mirror (c) black cloth (d) dark soil
25. 25.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) flipped left to right (c) in colour (d) much bigger
26. 26.🔍 Which is the odd one out? (a) a rough wooden board (b) a shiny steel plate (c) dark soil (d) black cloth
27. 27.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is kept the same. (a) False (b) True
28. 28.🔭 Why must the two mirrors face each other and be parallel? (a) so it looks shiny (b) so light reaches the eye (c) so it can float (d) to make it heavy
29. 29.🧺 Which of these is needed for the periscope? (a) vinegar (b) sticky tape (c) a balloon (d) a magnet
30. 30.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
31. 31.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the angle of the mirrors”? (a) we keep it the same (b) we change it (c) we measure it
32. 32.🛟 You must never point a periscope or a mirror at ___. (a) the Sun (b) a tree (c) a wall (d) a friend’s toy
33. 33.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we keep it the same (b) we change it (c) we measure it
34. 34.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the object we look at (b) the same carton (c) the angle of the mirrors (d) the same light
35. 35.🔍 Which is the odd one out? (a) still clear water (b) a shiny steel plate (c) dark soil (d) aluminium foil
36. 36.True or false: a ruler is not needed for the periscope. (a) False (b) True
37. 37.🔭 Which of these reflects light well? (a) a dull brick (b) dark soil (c) a rough wooden board (d) still clear water
38. 38.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) only darkness (c) two pictures (d) a rainbow
39. 39.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is what we measure. (a) True (b) False
40. 40.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed

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