Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 407 · 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.🔭 Which of these reflects light well? (a) a dull brick (b) black cloth (c) dark soil (d) aluminium foil
2. 2.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) plastic safety mirrors (c) broken glass bits (d) loose glass panes
3. 3.🔍 Which is the odd one out? (a) aluminium foil (b) a shiny steel plate (c) still clear water (d) black cloth
4. 4.⚖️ 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
5. 5.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a friend’s toy (c) a wall (d) the Sun
6. 6.True or false: two small mirrors is needed for the periscope. (a) True (b) False
7. 7.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
8. 8.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) taller walls (b) only short walls (c) the ground (d) nothing at all
9. 9.True or false: black cloth reflects light well. (a) True (b) False
10. 10.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is the one thing we change. (a) False (b) True
11. 11.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same carton (b) how clear the view is (c) the angle of the mirrors (d) the same light
12. 12.🔭 How many times does light bounce off a mirror in a simple periscope?
13. 13.⚖️ 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 light (c) the object we look at (d) the same mirrors
14. 14.True or false: vinegar is not needed for the periscope. (a) False (b) True
15. 15.⚖️ 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
16. 16.🧺 Which of these is not needed for the periscope? (a) a ruler (b) an empty juice carton (c) a pencil (d) yeast
17. 17.⚖️ 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
18. 18.🔭 Does dark soil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
19. 19.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is what we measure. (a) True (b) False
20. 20.True or false: a mirror reflects light poorly. (a) True (b) False
21. 21.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is what we measure. (a) False (b) True
22. 22.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) yeast (c) a pencil (d) an empty juice carton
23. 23.🧺 Do we need sticky tape for the periscope? (a) needed (b) not needed
24. 24.🧺 Which of these is not needed for the periscope? (a) a ruler (b) a balloon (c) an empty juice carton (d) a pencil
25. 25.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
26. 26.🔭 What does a periscope let you do? (a) see germs (b) hear far sounds (c) see in the dark (d) see over a wall
27. 27.⚖️ 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 keep it the same (b) we measure it (c) we change it
28. 28.🔭 How many mirrors does a simple periscope use?
29. 29.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed
30. 30.🧺 Which of these is needed for the periscope? (a) two small mirrors (b) a battery cell (c) a balloon (d) vinegar
31. 31.True or false: a mirror reflects light well. (a) False (b) True
32. 32.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) two small mirrors (c) a balloon (d) a pencil
33. 33.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
34. 34.True or false: black cloth reflects light poorly. (a) True (b) False
35. 35.🔍 Which is the odd one out? (a) still clear water (b) a dull brick (c) black cloth (d) a rough wooden board
36. 36.True or false: aluminium foil reflects light well. (a) True (b) False
37. 37.📘 Light bouncing off a mirror is called ___. (a) refraction (b) reflection (c) magnetism (d) evaporation
38. 38.True or false: an empty juice carton is not needed for the periscope. (a) False (b) True
39. 39.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
40. 40.True or false: sticky tape is needed for the periscope. (a) False (b) True

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