Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 153 · 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? Which of these is the one thing we change? (a) how clear the view is (b) the same mirrors (c) the object we look at (d) the angle of the mirrors
2. 2.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a ruler (c) two small mirrors (d) a balloon
3. 3.🔭 How many times does light bounce off a mirror in a simple periscope?
4. 4.⚖️ 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 keep it the same (b) we measure it (c) we change it
5. 5.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) in colour (c) upside down only (d) flipped left to right
6. 6.🔍 Which is the odd one out? (a) still clear water (b) aluminium foil (c) a rough wooden board (d) a mirror
7. 7.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a battery cell (b) a ruler (c) a pencil (d) sticky tape
8. 8.True or false: still clear water reflects light well. (a) True (b) False
9. 9.⚖️ 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 measure it (b) we change it (c) we keep it the same
10. 10.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
11. 11.🛟 You must never point a periscope or a mirror at ___. (a) the Sun (b) a wall (c) a tree (d) a friend’s toy
12. 12.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) an empty juice carton (c) a magnet (d) sticky tape
13. 13.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) a brighter view (c) two pictures (d) only darkness
14. 14.⚖️ 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) how clear the view is (c) the angle of the mirrors
15. 15.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) sticky tape (c) two small mirrors (d) vinegar
16. 16.🔭 At what angle are the mirrors set in a simple periscope? (a) 45 degrees (b) 180 degrees (c) 10 degrees (d) 90 degrees
17. 17.True or false: vinegar is not needed for the periscope. (a) False (b) True
18. 18.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
19. 19.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) broken glass bits (c) plastic safety mirrors (d) big wall mirrors
20. 20.🔭 Which of these reflects light well? (a) black cloth (b) dark soil (c) a dull brick (d) still clear water
21. 21.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) yeast (c) a ruler (d) sticky tape
22. 22.⚖️ 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) True (b) False
23. 23.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) nothing at all (b) only short walls (c) taller walls (d) the ground
24. 24.True or false: a ruler is not needed for the periscope. (a) False (b) True
25. 25.🔍 Which is the odd one out? (a) black cloth (b) a rough wooden board (c) a mirror (d) a dull brick
26. 26.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
27. 27.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we measure it (b) we keep it the same (c) we change it
28. 28.True or false: a magnet is needed for the periscope. (a) False (b) True
29. 29.True or false: vinegar is needed for the periscope. (a) True (b) False
30. 30.🧺 Which of these is needed for the periscope? (a) vinegar (b) a magnet (c) a balloon (d) an empty juice carton
31. 31.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is kept the same. (a) True (b) False
32. 32.True or false: turmeric powder is not needed for the periscope. (a) False (b) True
33. 33.🔭 Does black cloth 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? Which of these is kept the same? (a) the angle of the mirrors (b) the object we look at (c) how clear the view is
35. 35.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
36. 36.True or false: aluminium foil reflects light poorly. (a) True (b) False
37. 37.True or false: an empty juice carton is needed for the periscope. (a) False (b) True
38. 38.🔭 What does a periscope let you do? (a) see in the dark (b) see germs (c) see over a wall (d) hear far sounds
39. 39.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is kept the same. (a) False (b) True
40. 40.True or false: sticky tape is needed for the periscope. (a) True (b) False

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