Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 82 · 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.True or false: a ruler is not needed for the periscope. (a) False (b) True
2. 2.⚖️ 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
3. 3.🧺 Which of these is not needed for the periscope? (a) a ruler (b) a pencil (c) an empty juice carton (d) turmeric powder
4. 4.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we change it (b) we keep it the same (c) we measure it
5. 5.⚖️ 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) how clear the view is (c) the same mirrors (d) the angle of the mirrors
6. 6.🧺 Which of these is needed for the periscope? (a) a balloon (b) yeast (c) turmeric powder (d) an empty juice carton
7. 7.True or false: two small mirrors is needed for the periscope. (a) False (b) True
8. 8.True or false: a shiny steel plate reflects light well. (a) True (b) False
9. 9.🧺 Which of these is not needed for the periscope? (a) a pencil (b) a battery cell (c) sticky tape (d) an empty juice carton
10. 10.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) a pencil (c) a balloon (d) an empty juice carton
11. 11.🔍 Which is the odd one out? (a) aluminium foil (b) a dull brick (c) still clear water (d) a mirror
12. 12.🧺 Which of these is needed for the periscope? (a) a battery cell (b) a magnet (c) turmeric powder (d) sticky tape
13. 13.🔭 Does dark soil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
14. 14.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) yeast (c) a magnet (d) a pencil
15. 15.True or false: two small mirrors is not needed for the periscope. (a) True (b) False
16. 16.🔮 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
17. 17.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) the Sun (c) a tree (d) a wall
18. 18.🔭 Which of these reflects light poorly? (a) still clear water (b) a rough wooden board (c) aluminium foil (d) a mirror
19. 19.🧺 Which of these is needed for the periscope? (a) a balloon (b) a magnet (c) yeast (d) two small mirrors
20. 20.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) a ruler (c) an empty juice carton (d) vinegar
21. 21.True or false: still clear water reflects light well. (a) True (b) False
22. 22.🔭 How many times does light bounce off a mirror in a simple periscope?
23. 23.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) yeast (b) a pencil (c) a ruler (d) two small mirrors
24. 24.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same light (b) the angle of the mirrors (c) how clear the view is (d) the object we look at
25. 25.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) flipped left to right (b) upside down only (c) in colour (d) much bigger
26. 26.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is kept the same. (a) True (b) False
27. 27.True or false: a shiny steel plate reflects light poorly. (a) True (b) False
28. 28.True or false: a battery cell is not needed for the periscope. (a) True (b) False
29. 29.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
30. 30.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) an empty juice carton (c) vinegar (d) a ruler
31. 31.True or false: a dull brick reflects light well. (a) True (b) False
32. 32.True or false: a dull brick reflects light poorly. (a) False (b) True
33. 33.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
34. 34.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is the one thing we change. (a) True (b) False
35. 35.🧺 Do we need vinegar for the periscope? (a) not needed (b) needed
36. 36.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is kept the same. (a) False (b) True
37. 37.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we keep it the same (b) we measure it (c) we change it
38. 38.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
39. 39.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) nobody needs to (c) a grown-up (d) a friend who is running
40. 40.🔭 How many mirrors does a simple periscope use?

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