Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 504 · 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 mirrors does a simple periscope use?
2. 2.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we keep it the same (b) we change it (c) we measure it
3. 3.⚖️ 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 angle of the mirrors (c) the same light
4. 4.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
5. 5.🛟 Who should cut the holes in the juice carton? (a) a grown-up (b) nobody needs to (c) the youngest child (d) a friend who is running
6. 6.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) a brighter view (c) a rainbow (d) only darkness
7. 7.🧺 Which of these is not needed for the periscope? (a) a balloon (b) a pencil (c) an empty juice carton (d) two small mirrors
8. 8.🔍 Which is the odd one out? (a) black cloth (b) aluminium foil (c) a mirror (d) still clear water
9. 9.⚖️ 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
10. 10.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
11. 11.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
12. 12.⚖️ 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
13. 13.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) turmeric powder (b) a pencil (c) two small mirrors (d) an empty juice carton
14. 14.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) aluminium foil (c) still clear water (d) a rough wooden board
15. 15.🔭 Which of these reflects light poorly? (a) a mirror (b) dark soil (c) still clear water (d) aluminium foil
16. 16.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) yeast (c) a pencil (d) a ruler
17. 17.🛟 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
18. 18.True or false: sticky tape is needed for the periscope. (a) False (b) True
19. 19.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
20. 20.🔭 Which of these reflects light well? (a) a mirror (b) dark soil (c) black cloth (d) a dull brick
21. 21.🔭 Which of these reflects light well? (a) black cloth (b) a dull brick (c) dark soil (d) still clear water
22. 22.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is the one thing we change. (a) False (b) True
23. 23.True or false: yeast is not needed for the periscope. (a) True (b) False
24. 24.🔭 Who uses a periscope to look above the water? (a) a submarine crew (b) a pilot in a plane (c) a baker (d) a farmer
25. 25.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) vinegar (c) sticky tape (d) two small mirrors
26. 26.🔭 Does dark soil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
27. 27.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
28. 28.⚖️ 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
29. 29.True or false: vinegar is not needed for the periscope. (a) False (b) True
30. 30.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) two small mirrors (c) a balloon (d) an empty juice carton
31. 31.🧺 Which of these is needed for the periscope? (a) sticky tape (b) a battery cell (c) vinegar (d) turmeric powder
32. 32.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed
33. 33.🔍 Which is the odd one out? (a) a mirror (b) aluminium foil (c) still clear water (d) a dull brick
34. 34.True or false: two small mirrors is not needed for the periscope. (a) True (b) False
35. 35.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) two small mirrors (c) a pencil (d) a magnet
36. 36.🔭 Why must the two mirrors face each other and be parallel? (a) so it can float (b) so light reaches the eye (c) to make it heavy (d) so it looks shiny
37. 37.🔭 What does a periscope let you do? (a) see in the dark (b) hear far sounds (c) see over a wall (d) see germs
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? Which of these is the one thing we change? (a) the same mirrors (b) how clear the view is (c) the angle of the mirrors (d) the same light
40. 40.True or false: aluminium foil reflects light poorly. (a) True (b) False

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