Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 671 · 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.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
2. 2.🧺 Which of these is needed for the periscope? (a) vinegar (b) a magnet (c) sticky tape (d) a battery cell
3. 3.🔭 Which of these reflects light poorly? (a) a mirror (b) a rough wooden board (c) aluminium foil (d) still clear water
4. 4.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same mirrors (b) the angle of the mirrors (c) how clear the view is (d) the same carton
5. 5.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we measure it (b) we change it (c) we keep it the same
6. 6.🛟 You must never point a periscope or a mirror at ___. (a) the Sun (b) a wall (c) a tree (d) a friend’s toy
7. 7.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
8. 8.⚖️ 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 measure it (b) we change it (c) we keep it the same
9. 9.True or false: turmeric powder is needed for the periscope. (a) True (b) False
10. 10.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) the ground (b) only short walls (c) taller walls (d) nothing at all
11. 11.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
12. 12.🔍 Which is the odd one out? (a) a dull brick (b) aluminium foil (c) black cloth (d) a rough wooden board
13. 13.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a pencil (c) turmeric powder (d) an empty juice carton
14. 14.True or false: yeast is needed for the periscope. (a) False (b) True
15. 15.🔭 Which of these reflects light well? (a) a rough wooden board (b) a mirror (c) black cloth (d) a dull brick
16. 16.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) yeast (c) two small mirrors (d) an empty juice carton
17. 17.True or false: still clear water reflects light well. (a) False (b) True
18. 18.🔭 Who uses a periscope to look above the water? (a) a farmer (b) a pilot in a plane (c) a submarine crew (d) a baker
19. 19.True or false: a magnet is not needed for the periscope. (a) False (b) True
20. 20.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
21. 21.True or false: vinegar is needed for the periscope. (a) False (b) True
22. 22.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed
23. 23.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) big wall mirrors (c) plastic safety mirrors (d) loose glass panes
24. 24.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
25. 25.🧺 Which of these is not needed for the periscope? (a) a pencil (b) sticky tape (c) an empty juice carton (d) a balloon
26. 26.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) an empty juice carton (c) a pencil (d) a magnet
27. 27.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a balloon (c) sticky tape (d) a pencil
28. 28.🧺 Which of these is not needed for the periscope? (a) a ruler (b) a pencil (c) an empty juice carton (d) vinegar
29. 29.🧺 Which of these is needed for the periscope? (a) an empty juice carton (b) yeast (c) a magnet (d) turmeric powder
30. 30.True or false: sticky tape is not needed for the periscope. (a) False (b) True
31. 31.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is the one thing we change. (a) True (b) False
32. 32.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a magnet (b) sticky tape (c) a ruler (d) two small mirrors
33. 33.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) flipped left to right (b) in colour (c) upside down only (d) much bigger
34. 34.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) an empty juice carton (c) two small mirrors (d) a battery cell
35. 35.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) two small mirrors (c) yeast (d) a pencil
36. 36.🧺 Which of these is not needed for the periscope? (a) a pencil (b) two small mirrors (c) turmeric powder (d) an empty juice carton
37. 37.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the angle of the mirrors (b) the same mirrors (c) how clear the view is
38. 38.🔭 How many times does light bounce off a mirror in a simple periscope?
39. 39.⚖️ 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
40. 40.True or false: an empty juice carton is not needed for the periscope. (a) False (b) True

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