Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 813 · 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) a balloon (c) a magnet (d) an empty juice carton
2. 2.True or false: yeast is needed for the periscope. (a) True (b) False
3. 3.True or false: still clear water reflects light poorly. (a) False (b) True
4. 4.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
5. 5.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) vinegar (b) two small mirrors (c) sticky tape (d) an empty juice carton
6. 6.🧺 Which of these is needed for the periscope? (a) a balloon (b) turmeric powder (c) a pencil (d) vinegar
7. 7.🔭 Which of these reflects light poorly? (a) a mirror (b) a shiny steel plate (c) a rough wooden board (d) aluminium foil
8. 8.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a battery cell (c) a pencil (d) two small mirrors
9. 9.🧺 Do we need a balloon for the periscope? (a) not needed (b) needed
10. 10.True or false: a magnet is not needed for the periscope. (a) True (b) False
11. 11.True or false: a ruler is not needed for the periscope. (a) True (b) False
12. 12.True or false: turmeric powder is not needed for the periscope. (a) True (b) False
13. 13.🔭 At what angle are the mirrors set in a simple periscope? (a) 45 degrees (b) 90 degrees (c) 180 degrees (d) 10 degrees
14. 14.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we change it (b) we keep it the same (c) we measure it
15. 15.🔭 Why must the two mirrors face each other and be parallel? (a) so light reaches the eye (b) so it looks shiny (c) to make it heavy (d) so it can float
16. 16.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a ruler (c) two small mirrors (d) a magnet
17. 17.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) turmeric powder (c) two small mirrors (d) a pencil
18. 18.🔮 Predict: you cover the top mirror with paper. What do you see? (a) only darkness (b) two pictures (c) a brighter view (d) a rainbow
19. 19.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a wall (c) a friend’s toy (d) the Sun
20. 20.⚖️ 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
21. 21.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the angle of the mirrors (b) the same mirrors (c) the same carton (d) the object we look at
22. 22.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is what we measure. (a) False (b) True
23. 23.🔭 How many mirrors does a simple periscope use?
24. 24.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a magnet (b) a pencil (c) sticky tape (d) two small mirrors
25. 25.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the object we look at (b) the angle of the mirrors (c) how clear the view is
26. 26.⚖️ 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) the angle of the mirrors (c) how clear the view is
27. 27.True or false: vinegar is not needed for the periscope. (a) False (b) True
28. 28.⚖️ 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
29. 29.🔭 Does dark soil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
30. 30.⚖️ 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
31. 31.🔭 Who uses a periscope to look above the water? (a) a submarine crew (b) a baker (c) a farmer (d) a pilot in a plane
32. 32.True or false: a balloon is needed for the periscope. (a) True (b) False
33. 33.🔭 How many times does light bounce off a mirror in a simple periscope?
34. 34.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
35. 35.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) a balloon (c) yeast (d) a ruler
36. 36.True or false: yeast is not needed for the periscope. (a) False (b) True
37. 37.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) plastic safety mirrors (c) loose glass panes (d) broken glass bits
38. 38.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is kept the same. (a) True (b) False
39. 39.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) an empty juice carton (c) a battery cell (d) two small mirrors
40. 40.🧺 Which of these is not needed for the periscope? (a) vinegar (b) two small mirrors (c) sticky tape (d) an empty juice carton

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