Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 975 · 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.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) the ground (b) only short walls (c) taller walls (d) nothing at all
2. 2.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) plastic safety mirrors (c) broken glass bits (d) big wall mirrors
3. 3.🔍 Which is the odd one out? (a) aluminium foil (b) still clear water (c) dark soil (d) a mirror
4. 4.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
5. 5.True or false: a balloon is needed for the periscope. (a) False (b) True
6. 6.True or false: a balloon is not needed for the periscope. (a) True (b) False
7. 7.True or false: still clear water reflects light poorly. (a) True (b) False
8. 8.True or false: two small mirrors 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 the one thing we change. (a) True (b) False
10. 10.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
11. 11.🛟 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
12. 12.⚖️ 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
13. 13.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same mirrors (b) how clear the view is (c) the angle of the mirrors (d) the same carton
14. 14.True or false: turmeric powder is needed for the periscope. (a) True (b) False
15. 15.True or false: still clear water reflects light well. (a) False (b) True
16. 16.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) in colour (b) flipped left to right (c) much bigger (d) upside down only
17. 17.True or false: a magnet is not needed for the periscope. (a) False (b) True
18. 18.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) a tree (c) a friend’s toy (d) the Sun
19. 19.True or false: vinegar is not needed for the periscope. (a) False (b) True
20. 20.True or false: a ruler is needed for the periscope. (a) False (b) True
21. 21.🔭 Which of these reflects light poorly? (a) a mirror (b) aluminium foil (c) a rough wooden board (d) still clear water
22. 22.🔭 Which of these reflects light well? (a) aluminium foil (b) black cloth (c) a dull brick (d) a rough wooden board
23. 23.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a pencil (c) two small mirrors (d) a magnet
24. 24.🔭 Which of these reflects light poorly? (a) still clear water (b) a mirror (c) a shiny steel plate (d) a dull brick
25. 25.🔭 Who uses a periscope to look above the water? (a) a baker (b) a farmer (c) a submarine crew (d) a pilot in a plane
26. 26.🧺 Do we need sticky tape for the periscope? (a) needed (b) not needed
27. 27.True or false: a pencil is needed for the periscope. (a) True (b) False
28. 28.🔍 Which is the odd one out? (a) a rough wooden board (b) a shiny steel plate (c) a mirror (d) aluminium foil
29. 29.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) sticky tape (c) a ruler (d) yeast
30. 30.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) two small mirrors (c) sticky tape (d) vinegar
31. 31.⚖️ 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 angle of the mirrors (d) the same mirrors
32. 32.True or false: an empty juice carton is needed for the periscope. (a) False (b) True
33. 33.🧺 Which of these is needed for the periscope? (a) vinegar (b) turmeric powder (c) a magnet (d) an empty juice carton
34. 34.📘 Light bouncing off a mirror is called ___. (a) evaporation (b) magnetism (c) refraction (d) reflection
35. 35.🧺 Which of these is needed for the periscope? (a) a balloon (b) turmeric powder (c) a magnet (d) sticky tape
36. 36.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) a pencil (c) an empty juice carton (d) a battery cell
37. 37.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same carton (b) the angle of the mirrors (c) how clear the view is
38. 38.🔍 Which is the odd one out? (a) a shiny steel plate (b) dark soil (c) a dull brick (d) black cloth
39. 39.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) a balloon (c) vinegar (d) two small mirrors
40. 40.True or false: black cloth reflects light well. (a) True (b) False

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