Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 21 · 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.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
2. 2.🧺 Do we need sticky tape for the periscope? (a) needed (b) not needed
3. 3.🧺 Which of these is needed for the periscope? (a) a battery cell (b) a ruler (c) a magnet (d) turmeric powder
4. 4.🔭 How many times does light bounce off a mirror in a simple periscope?
5. 5.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 180 degrees (c) 45 degrees (d) 90 degrees
6. 6.True or false: a balloon is needed for the periscope. (a) False (b) True
7. 7.🔭 Which of these reflects light well? (a) dark soil (b) a mirror (c) black cloth (d) a dull brick
8. 8.🔍 Which is the odd one out? (a) a shiny steel plate (b) a mirror (c) still clear water (d) black cloth
9. 9.True or false: aluminium foil reflects light poorly. (a) True (b) False
10. 10.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) vinegar (c) two small mirrors (d) a ruler
11. 11.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) a magnet (c) sticky tape (d) a balloon
12. 12.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) yeast (c) two small mirrors (d) sticky tape
13. 13.📘 Light bouncing off a mirror is called ___. (a) reflection (b) refraction (c) evaporation (d) magnetism
14. 14.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) a ruler (c) a magnet (d) two small mirrors
15. 15.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed
16. 16.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
17. 17.⚖️ 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
18. 18.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
19. 19.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) nothing at all (b) taller walls (c) the ground (d) only short walls
20. 20.⚖️ 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 carton (b) the same mirrors (c) the object we look at (d) the angle of the mirrors
21. 21.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a battery cell (b) a pencil (c) an empty juice carton (d) two small mirrors
22. 22.🔍 Which is the odd one out? (a) dark soil (b) a dull brick (c) a rough wooden board (d) still clear water
23. 23.🛟 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
24. 24.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a balloon (c) sticky tape (d) a pencil
25. 25.🔭 Which of these reflects light well? (a) a dull brick (b) a rough wooden board (c) aluminium foil (d) dark soil
26. 26.🧺 Do we need a pencil for the periscope? (a) needed (b) not needed
27. 27.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
28. 28.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) flipped left to right (b) much bigger (c) upside down only (d) in colour
29. 29.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) a mirror (c) aluminium foil (d) a rough wooden board
30. 30.🧺 Which of these is needed for the periscope? (a) yeast (b) a magnet (c) a battery cell (d) an empty juice carton
31. 31.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) the Sun (c) a friend’s toy (d) a tree
32. 32.True or false: two small mirrors is needed for the periscope. (a) True (b) False
33. 33.True or false: a balloon is not needed for the periscope. (a) True (b) False
34. 34.True or false: yeast is needed for the periscope. (a) True (b) False
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 measure it (b) we change it (c) we keep it the same
36. 36.🔭 Who uses a periscope to look above the water? (a) a farmer (b) a submarine crew (c) a pilot in a plane (d) a baker
37. 37.🔍 Which is the odd one out? (a) a dull brick (b) still clear water (c) a mirror (d) a shiny steel plate
38. 38.🔭 Why must the two mirrors face each other and be parallel? (a) to make it heavy (b) so it looks shiny (c) so light reaches the eye (d) so it can float
39. 39.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we change it (b) we keep it the same (c) we measure it
40. 40.True or false: a shiny steel plate reflects light poorly. (a) False (b) True

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