Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 846 · 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 object we look at”? (a) we keep it the same (b) we measure it (c) we change it
2. 2.True or false: an empty juice carton is needed for the periscope. (a) False (b) True
3. 3.🛟 Who should cut the holes in the juice carton? (a) nobody needs to (b) the youngest child (c) a friend who is running (d) a grown-up
4. 4.🧺 Which of these is not needed for the periscope? (a) a pencil (b) an empty juice carton (c) a ruler (d) turmeric powder
5. 5.🔭 Which of these reflects light poorly? (a) still clear water (b) a dull brick (c) aluminium foil (d) a shiny steel plate
6. 6.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a wall (c) a friend’s toy (d) the Sun
7. 7.True or false: vinegar is not needed for the periscope. (a) True (b) False
8. 8.True or false: sticky tape is not 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: how clear the view is is the one thing we change. (a) True (b) False
10. 10.🔭 Which of these reflects light poorly? (a) black cloth (b) aluminium foil (c) a mirror (d) still clear water
11. 11.🧺 Do we need a battery cell for the periscope? (a) not needed (b) needed
12. 12.🔭 Who uses a periscope to look above the water? (a) a baker (b) a pilot in a plane (c) a submarine crew (d) a farmer
13. 13.⚖️ 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
14. 14.🧺 Which of these is not needed for the periscope? (a) a pencil (b) two small mirrors (c) a balloon (d) an empty juice carton
15. 15.True or false: turmeric powder is not needed for the periscope. (a) True (b) False
16. 16.True or false: yeast is not needed for the periscope. (a) False (b) True
17. 17.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
18. 18.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
19. 19.🔭 Which of these reflects light well? (a) a rough wooden board (b) black cloth (c) dark soil (d) still clear water
20. 20.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a ruler (c) an empty juice carton (d) a balloon
21. 21.⚖️ 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 keep it the same (c) we change it
22. 22.🔭 Which of these reflects light well? (a) a rough wooden board (b) a dull brick (c) black cloth (d) a shiny steel plate
23. 23.True or false: sticky tape is needed for the periscope. (a) False (b) True
24. 24.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) big wall mirrors (c) plastic safety mirrors (d) broken glass bits
25. 25.🧺 Which of these is needed for the periscope? (a) an empty juice carton (b) a balloon (c) vinegar (d) yeast
26. 26.True or false: black cloth reflects light well. (a) True (b) False
27. 27.🔭 How many times does light bounce off a mirror in a simple periscope?
28. 28.🔭 Which of these reflects light poorly? (a) still clear water (b) aluminium foil (c) dark soil (d) a mirror
29. 29.True or false: two small mirrors is needed for the periscope. (a) True (b) False
30. 30.📘 Light bouncing off a mirror is called ___. (a) refraction (b) reflection (c) evaporation (d) magnetism
31. 31.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) sticky tape (c) vinegar (d) two small mirrors
32. 32.True or false: a magnet is needed for the periscope. (a) True (b) False
33. 33.True or false: a pencil is not needed for the periscope. (a) False (b) True
34. 34.🧺 Which of these is not needed for the periscope? (a) a pencil (b) two small mirrors (c) an empty juice carton (d) a magnet
35. 35.🔭 How many mirrors does a simple periscope use?
36. 36.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a ruler (c) a pencil (d) a battery cell
37. 37.🧺 Which of these is needed for the periscope? (a) a battery cell (b) a balloon (c) a magnet (d) a ruler
38. 38.True or false: a pencil is needed for the periscope. (a) True (b) False
39. 39.🔍 Which is the odd one out? (a) aluminium foil (b) still clear water (c) a mirror (d) dark soil
40. 40.🔭 Why must the two mirrors face each other and be parallel? (a) so it can float (b) so light reaches the eye (c) so it looks shiny (d) to make it heavy

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