Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 832 · 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 uses a periscope to look above the water? (a) a submarine crew (b) a farmer (c) a pilot in a plane (d) a baker
2. 2.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) the Sun (c) a tree (d) a friend’s toy
3. 3.🧺 Do we need a magnet for the periscope? (a) not needed (b) needed
4. 4.True or false: sticky tape is needed for the periscope. (a) True (b) False
5. 5.True or false: sticky tape is not needed for the periscope. (a) True (b) False
6. 6.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
7. 7.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) two small mirrors (c) a ruler (d) yeast
8. 8.🔭 Does dark soil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
9. 9.True or false: a balloon is needed for the periscope. (a) True (b) False
10. 10.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) a grown-up (c) nobody needs to (d) the youngest child
11. 11.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) nothing at all (c) taller walls (d) the ground
12. 12.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is kept the same. (a) False (b) True
13. 13.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
14. 14.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) only darkness (c) a brighter view (d) two pictures
15. 15.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
16. 16.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a ruler (c) a pencil (d) a balloon
17. 17.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
18. 18.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) a magnet (c) yeast (d) a ruler
19. 19.🧺 Which of these is needed for the periscope? (a) a magnet (b) a balloon (c) an empty juice carton (d) yeast
20. 20.🔭 Which of these reflects light poorly? (a) a mirror (b) still clear water (c) a dull brick (d) aluminium foil
21. 21.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) two small mirrors (c) sticky tape (d) turmeric powder
22. 22.True or false: a battery cell is needed for the periscope. (a) True (b) False
23. 23.True or false: a ruler is needed for the periscope. (a) False (b) True
24. 24.⚖️ 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 keep it the same (c) we change it
25. 25.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
26. 26.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) yeast (c) vinegar (d) two small mirrors
27. 27.🔭 How many mirrors does a simple periscope use?
28. 28.🔭 How many times does light bounce off a mirror in a simple periscope?
29. 29.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a magnet (c) a pencil (d) a ruler
30. 30.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) loose glass panes (c) plastic safety mirrors (d) big wall mirrors
31. 31.🔭 Which of these reflects light poorly? (a) a rough wooden board (b) a shiny steel plate (c) still clear water (d) a mirror
32. 32.True or false: yeast is not needed for the periscope. (a) False (b) True
33. 33.🧺 Do we need yeast for the periscope? (a) not needed (b) needed
34. 34.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) two small mirrors (c) a magnet (d) a ruler
35. 35.🧺 Do we need a battery cell for the periscope? (a) not needed (b) needed
36. 36.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) yeast (c) a ruler (d) a pencil
37. 37.📘 Light bouncing off a mirror is called ___. (a) evaporation (b) refraction (c) magnetism (d) reflection
38. 38.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
39. 39.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) how clear the view is (b) the angle of the mirrors (c) the same carton
40. 40.🔭 At what angle are the mirrors set in a simple periscope? (a) 180 degrees (b) 10 degrees (c) 45 degrees (d) 90 degrees

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