Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 771 · 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 mirrors are safest for a children’s periscope? (a) loose glass panes (b) plastic safety mirrors (c) big wall mirrors (d) broken glass bits
2. 2.True or false: a balloon is needed for the periscope. (a) True (b) False
3. 3.⚖️ 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
4. 4.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) yeast (c) a pencil (d) two small mirrors
5. 5.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) vinegar (b) a pencil (c) a ruler (d) sticky tape
6. 6.True or false: dark soil reflects light well. (a) False (b) True
7. 7.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) two small mirrors (c) a pencil (d) turmeric powder
8. 8.🔭 Which of these reflects light poorly? (a) a dull brick (b) a mirror (c) still clear water (d) a shiny steel plate
9. 9.⚖️ 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
10. 10.🔭 How many mirrors does a simple periscope use?
11. 11.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is kept the same. (a) True (b) False
12. 12.True or false: a mirror reflects light poorly. (a) True (b) False
13. 13.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
14. 14.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) how clear the view is (b) the same light (c) the angle of the mirrors (d) the object we look at
15. 15.🔍 Which is the odd one out? (a) a rough wooden board (b) a mirror (c) aluminium foil (d) still clear water
16. 16.🔭 What does a periscope let you do? (a) see in the dark (b) see germs (c) see over a wall (d) hear far sounds
17. 17.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same mirrors (b) the angle of the mirrors (c) how clear the view is
18. 18.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we measure it (b) we change it (c) we keep it the same
19. 19.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
20. 20.🧺 Which of these is needed for the periscope? (a) sticky tape (b) a balloon (c) turmeric powder (d) a magnet
21. 21.True or false: a dull brick reflects light poorly. (a) False (b) True
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 ruler (b) a battery cell (c) sticky tape (d) two small mirrors
24. 24.True or false: a shiny steel plate reflects light well. (a) True (b) False
25. 25.🧺 Which of these is not needed for the periscope? (a) a battery cell (b) a ruler (c) an empty juice carton (d) sticky tape
26. 26.⚖️ 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
27. 27.True or false: a pencil is not needed for the periscope. (a) False (b) True
28. 28.🛟 Who should cut the holes in the juice carton? (a) nobody needs to (b) the youngest child (c) a grown-up (d) a friend who is running
29. 29.True or false: dark soil reflects light poorly. (a) True (b) False
30. 30.🧺 Do we need a pencil for the periscope? (a) not needed (b) needed
31. 31.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is the one thing we change. (a) False (b) True
32. 32.⚖️ 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) False (b) True
33. 33.🔭 Which of these reflects light well? (a) a shiny steel plate (b) a rough wooden board (c) a dull brick (d) dark soil
34. 34.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) an empty juice carton (c) a ruler (d) a balloon
35. 35.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is what we measure. (a) False (b) True
36. 36.True or false: still clear water reflects light well. (a) True (b) False
37. 37.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
38. 38.🔭 Which of these reflects light poorly? (a) a mirror (b) a rough wooden board (c) still clear water (d) aluminium foil
39. 39.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
40. 40.📘 Light bouncing off a mirror is called ___. (a) evaporation (b) magnetism (c) reflection (d) refraction

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