Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 641 · 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 balloon is needed for the periscope. (a) False (b) True
2. 2.🔭 How many times does light bounce off a mirror in a simple periscope?
3. 3.🧺 Do we need vinegar for the periscope? (a) not needed (b) needed
4. 4.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
5. 5.True or false: a mirror reflects light well. (a) False (b) True
6. 6.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
7. 7.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) vinegar (c) two small mirrors (d) a pencil
8. 8.True or false: a mirror reflects light poorly. (a) False (b) True
9. 9.🧺 Which of these is not needed for the periscope? (a) a pencil (b) turmeric powder (c) an empty juice carton (d) sticky tape
10. 10.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) the Sun (c) a wall (d) a tree
11. 11.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
12. 12.True or false: a shiny steel plate reflects light well. (a) True (b) False
13. 13.⚖️ 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
14. 14.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) sticky tape (c) two small mirrors (d) a battery cell
15. 15.🧺 Which of these is not needed for the periscope? (a) a ruler (b) sticky tape (c) a pencil (d) a magnet
16. 16.True or false: two small mirrors is not needed for the periscope. (a) False (b) True
17. 17.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
18. 18.🔭 What does a periscope let you do? (a) hear far sounds (b) see over a wall (c) see germs (d) see in the dark
19. 19.🛟 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
20. 20.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
21. 21.True or false: a ruler is needed for the periscope. (a) False (b) True
22. 22.⚖️ 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 keep it the same (c) we measure it
23. 23.⚖️ 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
24. 24.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is kept the same. (a) False (b) True
25. 25.⚖️ 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 carton (c) how clear the view is
26. 26.🧺 Which of these is needed for the periscope? (a) vinegar (b) a magnet (c) an empty juice carton (d) yeast
27. 27.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) flipped left to right (b) much bigger (c) upside down only (d) in colour
28. 28.🧺 Which of these is needed for the periscope? (a) a pencil (b) yeast (c) a battery cell (d) a magnet
29. 29.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
30. 30.⚖️ 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
31. 31.⚖️ 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 keep it the same (b) we change it (c) we measure it
32. 32.True or false: a magnet is not needed for the periscope. (a) False (b) True
33. 33.True or false: still clear water reflects light poorly. (a) True (b) False
34. 34.True or false: yeast is needed for the periscope. (a) True (b) False
35. 35.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the object we look at”? (a) we change it (b) we measure it (c) we keep it the same
36. 36.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is kept the same. (a) True (b) False
37. 37.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) an empty juice carton (c) a ruler (d) turmeric powder
38. 38.🧺 Do we need a pencil for the periscope? (a) not needed (b) needed
39. 39.⚖️ 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
40. 40.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is what we measure. (a) True (b) False

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