Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 114 · 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) black cloth (b) aluminium foil (c) a rough wooden board (d) a dull brick
2. 2.⚖️ 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 keep it the same (c) we measure it
3. 3.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well
4. 4.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) the ground (b) taller walls (c) only short walls (d) nothing at all
5. 5.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) broken glass bits (c) loose glass panes (d) plastic safety mirrors
6. 6.⚖️ 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) how clear the view is (c) the same carton (d) the angle of the mirrors
7. 7.True or false: two small mirrors is needed for the periscope. (a) False (b) True
8. 8.True or false: vinegar is needed for the periscope. (a) True (b) False
9. 9.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is kept the same. (a) True (b) False
10. 10.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
11. 11.🔍 Which is the odd one out? (a) black cloth (b) aluminium foil (c) a dull brick (d) a rough wooden board
12. 12.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
13. 13.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) a grown-up (c) the youngest child (d) nobody needs to
14. 14.🔭 What does a periscope let you do? (a) see over a wall (b) see in the dark (c) see germs (d) hear far sounds
15. 15.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) two pictures (c) a rainbow (d) only darkness
16. 16.🔍 Which is the odd one out? (a) a dull brick (b) a mirror (c) dark soil (d) a rough wooden board
17. 17.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is kept the same. (a) True (b) False
18. 18.⚖️ 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 light (c) the angle of the mirrors
19. 19.True or false: yeast is needed for the periscope. (a) False (b) True
20. 20.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) turmeric powder (c) a ruler (d) sticky tape
21. 21.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
22. 22.True or false: aluminium foil reflects light poorly. (a) True (b) False
23. 23.True or false: an empty juice carton is needed for the periscope. (a) True (b) False
24. 24.📘 Light bouncing off a mirror is called ___. (a) refraction (b) magnetism (c) evaporation (d) reflection
25. 25.True or false: a mirror reflects light poorly. (a) True (b) False
26. 26.True or false: a shiny steel plate reflects light poorly. (a) False (b) True
27. 27.True or false: still clear water reflects light well. (a) True (b) False
28. 28.🔭 How many times does light bounce off a mirror in a simple periscope?
29. 29.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is kept the same. (a) True (b) False
30. 30.🛟 You must never point a periscope or a mirror at ___. (a) the Sun (b) a wall (c) a tree (d) a friend’s toy
31. 31.🔭 Which of these reflects light poorly? (a) a mirror (b) aluminium foil (c) still clear water (d) a rough wooden board
32. 32.🔭 Which of these reflects light well? (a) a dull brick (b) a mirror (c) black cloth (d) dark soil
33. 33.🧺 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
34. 34.🔍 Which is the odd one out? (a) a rough wooden board (b) aluminium foil (c) still clear water (d) a mirror
35. 35.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
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 measure it (b) we change it (c) we keep it the same
37. 37.True or false: a dull brick reflects light poorly. (a) True (b) False
38. 38.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
39. 39.True or false: still clear water reflects light poorly. (a) False (b) True
40. 40.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a pencil (c) yeast (d) an empty juice carton

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