Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 397 · 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.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we measure it (b) we change it (c) we keep it the same
2. 2.🧺 Which of these is needed for the periscope? (a) a magnet (b) yeast (c) turmeric powder (d) two small mirrors
3. 3.True or false: sticky tape is not needed for the periscope. (a) True (b) False
4. 4.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) two small mirrors (c) yeast (d) sticky tape
5. 5.🛟 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
6. 6.🔭 Which of these reflects light poorly? (a) a mirror (b) dark soil (c) aluminium foil (d) still clear water
7. 7.🔭 How many times does light bounce off a mirror in a simple periscope?
8. 8.🧺 Do we need sticky tape for the periscope? (a) needed (b) not needed
9. 9.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is what we measure. (a) True (b) False
10. 10.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) only darkness (c) two pictures (d) a brighter view
11. 11.True or false: a ruler is needed for the periscope. (a) True (b) False
12. 12.🔍 Which is the odd one out? (a) a dull brick (b) black cloth (c) dark soil (d) aluminium foil
13. 13.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) upside down only (c) in colour (d) flipped left to right
14. 14.True or false: a shiny steel plate reflects light well. (a) False (b) True
15. 15.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) a grown-up (c) a friend who is running (d) nobody needs to
16. 16.🔭 How many mirrors does a simple periscope use?
17. 17.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
18. 18.True or false: turmeric powder is needed for the periscope. (a) True (b) False
19. 19.🔭 Which of these reflects light well? (a) black cloth (b) a rough wooden board (c) a shiny steel plate (d) a dull brick
20. 20.True or false: yeast is needed for the periscope. (a) True (b) False
21. 21.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
22. 22.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
23. 23.🔍 Which is the odd one out? (a) dark soil (b) a mirror (c) aluminium foil (d) a shiny steel plate
24. 24.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
25. 25.True or false: dark soil reflects light well. (a) True (b) False
26. 26.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a ruler (c) a balloon (d) an empty juice carton
27. 27.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
28. 28.True or false: a shiny steel plate reflects light poorly. (a) False (b) True
29. 29.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
30. 30.True or false: aluminium foil reflects light well. (a) False (b) True
31. 31.True or false: an empty juice carton is needed for the periscope. (a) False (b) True
32. 32.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a pencil (c) a battery cell (d) an empty juice carton
33. 33.🧺 Which of these is not needed for the periscope? (a) a ruler (b) a magnet (c) an empty juice carton (d) a pencil
34. 34.🔭 What does a periscope let you do? (a) see in the dark (b) see over a wall (c) hear far sounds (d) see germs
35. 35.🧺 Which of these is not needed for the periscope? (a) a ruler (b) sticky tape (c) a pencil (d) yeast
36. 36.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we change it (b) we measure it (c) we keep it the same
37. 37.⚖️ 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
38. 38.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
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 angle of the mirrors (b) the same carton (c) the same mirrors (d) how clear the view is
40. 40.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) an empty juice carton (c) a pencil (d) a magnet

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