Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 197 · 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.🧺 Do we need vinegar for the periscope? (a) not needed (b) needed
2. 2.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) nothing at all (b) the ground (c) only short walls (d) taller walls
3. 3.🧺 Which of these is needed for the periscope? (a) a balloon (b) a pencil (c) a magnet (d) vinegar
4. 4.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
5. 5.⚖️ 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
6. 6.⚖️ 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 change it (b) we keep it the same (c) we measure it
7. 7.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we keep it the same (b) we change it (c) we measure it
8. 8.True or false: a battery cell is needed for the periscope. (a) True (b) False
9. 9.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
10. 10.🔭 At what angle are the mirrors set in a simple periscope? (a) 180 degrees (b) 45 degrees (c) 90 degrees (d) 10 degrees
11. 11.⚖️ 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
12. 12.🔭 How many times does light bounce off a mirror in a simple periscope?
13. 13.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
14. 14.🔭 Which of these reflects light well? (a) black cloth (b) a dull brick (c) dark soil (d) a mirror
15. 15.🔭 Which of these reflects light poorly? (a) a dull brick (b) aluminium foil (c) a shiny steel plate (d) still clear water
16. 16.True or false: still clear water reflects light poorly. (a) False (b) True
17. 17.🔭 What does a periscope let you do? (a) see in the dark (b) see over a wall (c) hear far sounds (d) see germs
18. 18.True or false: aluminium foil reflects light poorly. (a) True (b) False
19. 19.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a pencil (c) sticky tape (d) a balloon
20. 20.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) nobody needs to (c) a grown-up (d) a friend who is running
21. 21.🔮 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
22. 22.True or false: a mirror reflects light well. (a) True (b) False
23. 23.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) an empty juice carton (c) a ruler (d) a magnet
24. 24.🛟 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
25. 25.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) yeast (c) sticky tape (d) a pencil
26. 26.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
27. 27.⚖️ 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
28. 28.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) vinegar (b) a pencil (c) a ruler (d) an empty juice carton
29. 29.True or false: a rough wooden board reflects light well. (a) True (b) False
30. 30.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
31. 31.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) turmeric powder (b) an empty juice carton (c) sticky tape (d) two small mirrors
32. 32.True or false: two small mirrors is not needed for the periscope. (a) False (b) True
33. 33.🔭 How many mirrors does a simple periscope use?
34. 34.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
35. 35.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) a balloon (c) a battery cell (d) a ruler
36. 36.🧺 Which of these is needed for the periscope? (a) a magnet (b) a balloon (c) an empty juice carton (d) turmeric powder
37. 37.⚖️ 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
38. 38.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) a ruler (c) a battery cell (d) an empty juice carton
39. 39.True or false: a mirror reflects light poorly. (a) False (b) True
40. 40.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed

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