Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 219 · 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.🛟 Who should cut the holes in the juice carton? (a) nobody needs to (b) a friend who is running (c) the youngest child (d) a grown-up
2. 2.⚖️ 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 mirrors (b) how clear the view is (c) the angle of the mirrors (d) the same carton
3. 3.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) yeast (b) a ruler (c) sticky tape (d) two small mirrors
4. 4.True or false: sticky tape is needed for the periscope. (a) False (b) True
5. 5.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) two pictures (c) only darkness (d) a brighter view
6. 6.📘 Light bouncing off a mirror is called ___. (a) reflection (b) refraction (c) magnetism (d) evaporation
7. 7.🔭 Which of these reflects light poorly? (a) aluminium foil (b) still clear water (c) dark soil (d) a mirror
8. 8.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we measure it (b) we change it (c) we keep it the same
9. 9.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) an empty juice carton (c) a balloon (d) sticky tape
10. 10.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) nothing at all (c) the ground (d) taller walls
11. 11.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
12. 12.True or false: yeast is not needed for the periscope. (a) False (b) True
13. 13.🔭 Who uses a periscope to look above the water? (a) a pilot in a plane (b) a submarine crew (c) a baker (d) a farmer
14. 14.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) a tree (c) a friend’s toy (d) the Sun
15. 15.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) vinegar (c) two small mirrors (d) sticky tape
16. 16.⚖️ 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 same carton (c) how clear the view is
17. 17.🧺 Which of these is not needed for the periscope? (a) a ruler (b) two small mirrors (c) a pencil (d) turmeric powder
18. 18.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is the one thing we change. (a) False (b) True
19. 19.True or false: a magnet is needed for the periscope. (a) True (b) False
20. 20.🧺 Which of these is needed for the periscope? (a) an empty juice carton (b) turmeric powder (c) a battery cell (d) a magnet
21. 21.True or false: still clear water reflects light poorly. (a) True (b) False
22. 22.True or false: yeast is needed for the periscope. (a) False (b) True
23. 23.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
24. 24.🔍 Which is the odd one out? (a) dark soil (b) a dull brick (c) black cloth (d) a mirror
25. 25.⚖️ 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
26. 26.⚖️ 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) False (b) True
27. 27.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) how clear the view is (b) the same carton (c) the same mirrors (d) the object we look at
28. 28.🧺 Do we need a magnet for the periscope? (a) not needed (b) needed
29. 29.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 10 degrees (c) 45 degrees (d) 180 degrees
30. 30.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) two small mirrors (c) sticky tape (d) yeast
31. 31.True or false: dark soil reflects light poorly. (a) False (b) True
32. 32.⚖️ 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 change it (c) we keep it the same
33. 33.🔭 How many mirrors does a simple periscope use?
34. 34.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) turmeric powder (c) sticky tape (d) an empty juice carton
35. 35.🧺 Which of these is needed for the periscope? (a) a pencil (b) yeast (c) turmeric powder (d) vinegar
36. 36.🧺 Which of these is needed for the periscope? (a) a balloon (b) a ruler (c) a battery cell (d) yeast
37. 37.🧺 Do we need a battery cell for the periscope? (a) not needed (b) needed
38. 38.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) plastic safety mirrors (c) broken glass bits (d) loose glass panes
39. 39.🔍 Which is the odd one out? (a) aluminium foil (b) black cloth (c) dark soil (d) a dull brick
40. 40.True or false: a ruler is needed for the periscope. (a) False (b) True

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