Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 97 · 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.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the angle of the mirrors (b) the same mirrors (c) how clear the view is (d) the same carton
2. 2.🔍 Which is the odd one out? (a) still clear water (b) a mirror (c) a shiny steel plate (d) a dull brick
3. 3.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
4. 4.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) the ground (b) only short walls (c) nothing at all (d) taller walls
5. 5.🔭 How many mirrors does a simple periscope use?
6. 6.🔭 Which of these reflects light well? (a) a shiny steel plate (b) dark soil (c) a dull brick (d) a rough wooden board
7. 7.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
8. 8.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) a battery cell (c) an empty juice carton (d) a pencil
9. 9.🛟 Who should cut the holes in the juice carton? (a) nobody needs to (b) a friend who is running (c) a grown-up (d) the youngest child
10. 10.True or false: vinegar is not needed for the periscope. (a) False (b) True
11. 11.⚖️ 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 measure it (c) we change it
12. 12.🔍 Which is the odd one out? (a) a shiny steel plate (b) aluminium foil (c) a rough wooden board (d) a mirror
13. 13.⚖️ 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) False (b) True
14. 14.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
15. 15.True or false: a ruler is needed for the periscope. (a) True (b) False
16. 16.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we measure it (b) we change it (c) we keep it the same
17. 17.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) two pictures (c) only darkness (d) a brighter view
18. 18.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
19. 19.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
20. 20.🔍 Which is the odd one out? (a) a rough wooden board (b) a dull brick (c) a shiny steel plate (d) dark soil
21. 21.🧺 Which of these is needed for the periscope? (a) yeast (b) a pencil (c) a balloon (d) a magnet
22. 22.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the same carton (b) the same light (c) the angle of the mirrors (d) the object we look at
23. 23.⚖️ 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
24. 24.🧺 Which of these is not needed for the periscope? (a) a pencil (b) yeast (c) two small mirrors (d) sticky tape
25. 25.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
26. 26.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) big wall mirrors (c) plastic safety mirrors (d) broken glass bits
27. 27.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
28. 28.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
29. 29.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) a mirror (c) black cloth (d) still clear water
30. 30.True or false: aluminium foil reflects light well. (a) True (b) False
31. 31.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we change it (b) we measure it (c) we keep it the same
32. 32.🔍 Which is the odd one out? (a) a shiny steel plate (b) aluminium foil (c) a mirror (d) black cloth
33. 33.🔭 Which of these reflects light well? (a) dark soil (b) black cloth (c) a rough wooden board (d) a mirror
34. 34.🔭 What does a periscope let you do? (a) see over a wall (b) see in the dark (c) hear far sounds (d) see germs
35. 35.🔭 Who uses a periscope to look above the water? (a) a farmer (b) a baker (c) a pilot in a plane (d) a submarine crew
36. 36.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) a wall (c) the Sun (d) a tree
37. 37.🔭 Which of these reflects light well? (a) a dull brick (b) a rough wooden board (c) dark soil (d) still clear water
38. 38.True or false: an empty juice carton is not needed for the periscope. (a) True (b) False
39. 39.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a balloon (b) two small mirrors (c) a ruler (d) sticky tape
40. 40.True or false: a dull brick reflects light poorly. (a) False (b) True

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