Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 897 · 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 cover the top mirror with paper. What do you see? (a) a rainbow (b) two pictures (c) a brighter view (d) only darkness
2. 2.🔭 Which of these reflects light well? (a) a rough wooden board (b) black cloth (c) dark soil (d) still clear water
3. 3.True or false: an empty juice carton is not needed for the periscope. (a) False (b) True
4. 4.🧺 Do we need vinegar for the periscope? (a) not needed (b) needed
5. 5.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
6. 6.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
7. 7.True or false: a magnet is needed for the periscope. (a) True (b) False
8. 8.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is what we measure. (a) False (b) True
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) False (b) True
10. 10.True or false: a ruler is needed for the periscope. (a) False (b) True
11. 11.True or false: a shiny steel plate reflects light poorly. (a) True (b) False
12. 12.🔭 Who uses a periscope to look above the water? (a) a pilot in a plane (b) a baker (c) a submarine crew (d) a farmer
13. 13.🧺 Do we need a battery cell for the periscope? (a) not needed (b) needed
14. 14.🔭 Which of these reflects light well? (a) a rough wooden board (b) a dull brick (c) aluminium foil (d) black cloth
15. 15.🔍 Which is the odd one out? (a) aluminium foil (b) a dull brick (c) a rough wooden board (d) dark soil
16. 16.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) loose glass panes (c) broken glass bits (d) plastic safety mirrors
17. 17.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) a friend’s toy (c) the Sun (d) a tree
18. 18.True or false: a rough wooden board reflects light well. (a) False (b) True
19. 19.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) flipped left to right (b) upside down only (c) much bigger (d) in colour
20. 20.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a pencil (c) a balloon (d) an empty juice carton
21. 21.True or false: dark soil reflects light well. (a) False (b) True
22. 22.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
23. 23.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
24. 24.🧺 Which of these is not needed for the periscope? (a) a battery cell (b) a pencil (c) a ruler (d) sticky tape
25. 25.🔭 Which of these reflects light poorly? (a) a mirror (b) aluminium foil (c) still clear water (d) a rough wooden board
26. 26.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
27. 27.⚖️ 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) False (b) True
28. 28.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) two small mirrors (c) a magnet (d) sticky tape
29. 29.⚖️ 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
30. 30.⚖️ 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 change it (b) we measure it (c) we keep it the same
31. 31.🔍 Which is the odd one out? (a) still clear water (b) black cloth (c) a rough wooden board (d) dark soil
32. 32.🧺 Which of these is needed for the periscope? (a) two small mirrors (b) turmeric powder (c) a magnet (d) a battery cell
33. 33.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
34. 34.⚖️ 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 change it (b) we measure it (c) we keep it the same
35. 35.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) a pencil (c) an empty juice carton (d) vinegar
36. 36.🔭 What does a periscope let you do? (a) see in the dark (b) see over a wall (c) hear far sounds (d) see germs
37. 37.True or false: aluminium foil reflects light poorly. (a) False (b) True
38. 38.🛟 Who should cut the holes in the juice carton? (a) nobody needs to (b) a grown-up (c) the youngest child (d) a friend who is running
39. 39.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) a pencil (c) vinegar (d) a magnet
40. 40.🧺 Do we need sticky tape for the periscope? (a) needed (b) not needed

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