Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 351 · 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 battery cell is needed for the periscope. (a) False (b) True
2. 2.True or false: a magnet is not needed for the periscope. (a) True (b) False
3. 3.🔭 How many times does light bounce off a mirror in a simple periscope?
4. 4.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) loose glass panes (c) plastic safety mirrors (d) broken glass bits
5. 5.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a battery cell (c) sticky tape (d) a ruler
6. 6.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is kept the same. (a) False (b) True
7. 7.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) an empty juice carton (c) two small mirrors (d) a magnet
8. 8.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
9. 9.🔍 Which is the odd one out? (a) dark soil (b) a rough wooden board (c) a dull brick (d) still clear water
10. 10.🔭 How many mirrors does a simple periscope use?
11. 11.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) a wall (c) a tree (d) the Sun
12. 12.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) an empty juice carton (c) a magnet (d) a pencil
13. 13.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) taller walls (c) nothing at all (d) the ground
14. 14.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
15. 15.True or false: an empty juice carton is not needed for the periscope. (a) False (b) True
16. 16.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
17. 17.⚖️ 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 mirrors (c) the same light (d) the angle of the mirrors
18. 18.True or false: a battery cell is not needed for the periscope. (a) True (b) False
19. 19.🔭 Which of these reflects light well? (a) a rough wooden board (b) dark soil (c) aluminium foil (d) black cloth
20. 20.⚖️ 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
21. 21.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is kept the same. (a) False (b) True
22. 22.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
23. 23.🔭 What does a periscope let you do? (a) see in the dark (b) hear far sounds (c) see over a wall (d) see germs
24. 24.🔮 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
25. 25.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the object we look at (b) the angle of the mirrors (c) the same carton (d) how clear the view is
26. 26.⚖️ 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 keep it the same (c) we change it
27. 27.True or false: a pencil is needed for the periscope. (a) True (b) False
28. 28.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same light (b) how clear the view is (c) the angle of the mirrors
29. 29.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
30. 30.🧺 Do we need vinegar for the periscope? (a) not needed (b) needed
31. 31.🔭 Which of these reflects light poorly? (a) a mirror (b) still clear water (c) a rough wooden board (d) aluminium foil
32. 32.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) yeast (c) an empty juice carton (d) a pencil
33. 33.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
34. 34.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
35. 35.True or false: sticky tape is needed for the periscope. (a) False (b) True
36. 36.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “how clear the view is”? (a) we measure it (b) we change it (c) we keep it the same
37. 37.True or false: yeast is needed for the periscope. (a) False (b) True
38. 38.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) nobody needs to (c) a friend who is running (d) a grown-up
39. 39.True or false: a shiny steel plate reflects light poorly. (a) True (b) False
40. 40.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) still clear water (c) aluminium foil (d) a dull brick

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