Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 824 · 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 of these is needed for the periscope? (a) yeast (b) turmeric powder (c) two small mirrors (d) a battery cell
2. 2.True or false: yeast is needed for the periscope. (a) True (b) False
3. 3.🧺 Which of these is needed for the periscope? (a) vinegar (b) an empty juice carton (c) a magnet (d) turmeric powder
4. 4.🔍 Which is the odd one out? (a) a rough wooden board (b) black cloth (c) a mirror (d) a dull brick
5. 5.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
6. 6.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) two small mirrors (c) yeast (d) an empty juice carton
7. 7.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) the ground (b) taller walls (c) nothing at all (d) only short walls
8. 8.🔭 Who uses a periscope to look above the water? (a) a baker (b) a farmer (c) a pilot in a plane (d) a submarine crew
9. 9.True or false: two small mirrors is needed for the periscope. (a) False (b) True
10. 10.⚖️ 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 same light (c) the angle of the mirrors (d) the same carton
11. 11.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) flipped left to right (c) in colour (d) much bigger
12. 12.🔭 What does a periscope let you do? (a) see in the dark (b) see germs (c) see over a wall (d) hear far sounds
13. 13.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a balloon (b) a pencil (c) sticky tape (d) a ruler
14. 14.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
15. 15.True or false: an empty juice carton is needed for the periscope. (a) False (b) True
16. 16.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a magnet (c) an empty juice carton (d) sticky tape
17. 17.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) the Sun (c) a friend’s toy (d) a tree
18. 18.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a battery cell (c) two small mirrors (d) a pencil
19. 19.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we keep it the same (b) we measure it (c) we change it
20. 20.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we measure it (b) we keep it the same (c) we change it
21. 21.True or false: a magnet is not needed for the periscope. (a) True (b) False
22. 22.🔍 Which is the odd one out? (a) a mirror (b) dark soil (c) aluminium foil (d) still clear water
23. 23.True or false: still clear water reflects light well. (a) False (b) True
24. 24.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we change it (b) we measure it (c) we keep it the same
25. 25.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
26. 26.True or false: still clear water reflects light poorly. (a) False (b) True
27. 27.True or false: a mirror reflects light well. (a) False (b) True
28. 28.🔭 Which of these reflects light well? (a) a rough wooden board (b) dark soil (c) a dull brick (d) a mirror
29. 29.🔭 How many times does light bounce off a mirror in a simple periscope?
30. 30.True or false: black cloth reflects light poorly. (a) False (b) True
31. 31.True or false: vinegar is needed for the periscope. (a) False (b) True
32. 32.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
33. 33.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the angle of the mirrors (b) how clear the view is (c) the same carton
34. 34.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) a rainbow (c) a brighter view (d) only darkness
35. 35.⚖️ 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
36. 36.True or false: an empty juice carton is not needed for the periscope. (a) True (b) False
37. 37.⚖️ 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
38. 38.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
39. 39.True or false: a ruler is not needed for the periscope. (a) True (b) False
40. 40.True or false: turmeric powder is needed for the periscope. (a) True (b) False

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