Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 238 · 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.🔭 How many times does light bounce off a mirror in a simple periscope?
2. 2.🔍 Which is the odd one out? (a) aluminium foil (b) a dull brick (c) still clear water (d) a shiny steel plate
3. 3.⚖️ 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 light (b) the same carton (c) the angle of the mirrors (d) the object we look at
4. 4.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) an empty juice carton (c) yeast (d) sticky tape
5. 5.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a wall (c) a friend’s toy (d) the Sun
6. 6.True or false: sticky tape is not needed for the periscope. (a) False (b) True
7. 7.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) a brighter view (c) two pictures (d) only darkness
8. 8.⚖️ 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
9. 9.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) a ruler (c) sticky tape (d) yeast
10. 10.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
11. 11.🔭 Which of these reflects light poorly? (a) still clear water (b) aluminium foil (c) a dull brick (d) a mirror
12. 12.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a battery cell (b) two small mirrors (c) a pencil (d) an empty juice carton
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 measure it (c) we change it
14. 14.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) turmeric powder (b) an empty juice carton (c) a pencil (d) two small mirrors
15. 15.⚖️ 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 measure it (c) we change it
16. 16.⚖️ 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) False (b) True
17. 17.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
18. 18.🔭 How many mirrors does a simple periscope use?
19. 19.🧺 Which of these is needed for the periscope? (a) a balloon (b) turmeric powder (c) a battery cell (d) a pencil
20. 20.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) sticky tape (c) a battery cell (d) a magnet
21. 21.True or false: a pencil is not needed for the periscope. (a) True (b) False
22. 22.🔍 Which is the odd one out? (a) a mirror (b) dark soil (c) a shiny steel plate (d) still clear water
23. 23.🧺 Do we need yeast for the periscope? (a) not needed (b) needed
24. 24.True or false: turmeric powder is not needed for the periscope. (a) True (b) False
25. 25.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a shiny steel plate (c) still clear water (d) dark soil
26. 26.True or false: a balloon is needed for the periscope. (a) True (b) False
27. 27.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a pencil (c) a balloon (d) an empty juice carton
28. 28.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) an empty juice carton (c) vinegar (d) yeast
29. 29.🧺 Which of these is needed for the periscope? (a) a battery cell (b) two small mirrors (c) a magnet (d) turmeric powder
30. 30.🧺 Do we need a balloon for the periscope? (a) not needed (b) needed
31. 31.🔭 Why must the two mirrors face each other and be parallel? (a) so it looks shiny (b) to make it heavy (c) so it can float (d) so light reaches the eye
32. 32.🔭 What does a periscope let you do? (a) see over a wall (b) see in the dark (c) hear far sounds (d) see germs
33. 33.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
34. 34.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
35. 35.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed
36. 36.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) how clear the view is (b) the same carton (c) the angle of the mirrors
37. 37.⚖️ 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) True (b) False
38. 38.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
39. 39.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
40. 40.🧺 Do we need a battery cell for the periscope? (a) not needed (b) needed

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