Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 220 · 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.🔭 What does a periscope let you do? (a) hear far sounds (b) see germs (c) see in the dark (d) see over a wall
2. 2.⚖️ 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
3. 3.🧺 Which of these is needed for the periscope? (a) yeast (b) an empty juice carton (c) a balloon (d) a magnet
4. 4.🔭 How many mirrors does a simple periscope use?
5. 5.🧺 Which of these is needed for the periscope? (a) a balloon (b) yeast (c) a ruler (d) turmeric powder
6. 6.🧺 Which of these is needed for the periscope? (a) a battery cell (b) sticky tape (c) turmeric powder (d) a magnet
7. 7.🔍 Which is the odd one out? (a) a rough wooden board (b) still clear water (c) aluminium foil (d) a mirror
8. 8.🔭 How many times does light bounce off a mirror in a simple periscope?
9. 9.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
10. 10.🔍 Which is the odd one out? (a) dark soil (b) a mirror (c) aluminium foil (d) still clear water
11. 11.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) taller walls (b) only short walls (c) the ground (d) nothing at all
12. 12.🔭 At what angle are the mirrors set in a simple periscope? (a) 45 degrees (b) 90 degrees (c) 10 degrees (d) 180 degrees
13. 13.🔭 Which of these reflects light well? (a) black cloth (b) still clear water (c) a dull brick (d) a rough wooden board
14. 14.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) two pictures (c) only darkness (d) a rainbow
15. 15.🔍 Which is the odd one out? (a) a dull brick (b) a rough wooden board (c) still clear water (d) black cloth
16. 16.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the object we look at (b) the angle of the mirrors (c) the same carton (d) the same mirrors
17. 17.⚖️ 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 keep it the same (c) we measure it
18. 18.🔭 Which of these reflects light well? (a) a shiny steel plate (b) dark soil (c) black cloth (d) a rough wooden board
19. 19.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed
20. 20.🔍 Which is the odd one out? (a) a mirror (b) a dull brick (c) a shiny steel plate (d) still clear water
21. 21.True or false: a battery cell is needed for the periscope. (a) True (b) False
22. 22.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) turmeric powder (c) sticky tape (d) a ruler
23. 23.True or false: turmeric powder is needed for the periscope. (a) True (b) False
24. 24.True or false: turmeric powder is not needed for the periscope. (a) True (b) False
25. 25.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is what we measure. (a) True (b) False
26. 26.🔭 Does dark soil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
27. 27.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same carton (b) the same mirrors (c) the same light (d) how clear the view is
28. 28.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
29. 29.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
30. 30.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) flipped left to right (b) in colour (c) upside down only (d) much bigger
31. 31.🔍 Which is the odd one out? (a) dark soil (b) black cloth (c) aluminium foil (d) a dull brick
32. 32.🧺 Which of these is needed for the periscope? (a) a magnet (b) vinegar (c) turmeric powder (d) a pencil
33. 33.True or false: yeast is not needed for the periscope. (a) False (b) True
34. 34.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) a ruler (c) a balloon (d) sticky tape
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.🧺 Which of these is needed for the periscope? (a) a balloon (b) two small mirrors (c) a magnet (d) a battery cell
37. 37.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
38. 38.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a wall (c) a friend’s toy (d) the Sun
39. 39.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) nobody needs to (c) the youngest child (d) a grown-up
40. 40.⚖️ 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

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