Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 252 · 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.🔭 How many times does light bounce off a mirror in a simple periscope?
2. 2.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
3. 3.🔭 Which of these reflects light poorly? (a) still clear water (b) aluminium foil (c) a dull brick (d) a mirror
4. 4.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) a wall (c) a tree (d) the Sun
5. 5.True or false: a mirror reflects light poorly. (a) False (b) True
6. 6.🧺 Which of these is needed for the periscope? (a) a battery cell (b) a balloon (c) an empty juice carton (d) turmeric powder
7. 7.🔍 Which is the odd one out? (a) a dull brick (b) a mirror (c) aluminium foil (d) a shiny steel plate
8. 8.🧺 Do we need a magnet for the periscope? (a) not needed (b) needed
9. 9.True or false: a ruler is needed for the periscope. (a) True (b) False
10. 10.🔭 Who uses a periscope to look above the water? (a) a submarine crew (b) a farmer (c) a baker (d) a pilot in a plane
11. 11.True or false: still clear water reflects light poorly. (a) True (b) False
12. 12.🔭 Which of these reflects light well? (a) a mirror (b) dark soil (c) black cloth (d) a rough wooden board
13. 13.True or false: a magnet is not needed for the periscope. (a) True (b) False
14. 14.📘 Light bouncing off a mirror is called ___. (a) magnetism (b) refraction (c) evaporation (d) reflection
15. 15.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) an empty juice carton (c) two small mirrors (d) yeast
16. 16.🔍 Which is the odd one out? (a) a rough wooden board (b) still clear water (c) black cloth (d) dark soil
17. 17.⚖️ 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 carton (c) the same mirrors (d) the angle of the mirrors
18. 18.🧺 Do we need a balloon for the periscope? (a) not needed (b) needed
19. 19.🔍 Which is the odd one out? (a) dark soil (b) a dull brick (c) aluminium foil (d) a rough wooden board
20. 20.True or false: a rough wooden board reflects light well. (a) True (b) False
21. 21.🧺 Which of these is needed for the periscope? (a) a battery cell (b) a balloon (c) turmeric powder (d) a ruler
22. 22.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) two small mirrors (c) vinegar (d) a pencil
23. 23.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
24. 24.🔭 What does a periscope let you do? (a) see in the dark (b) see over a wall (c) hear far sounds (d) see germs
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 same carton (c) how clear the view is
26. 26.🔮 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
27. 27.🔭 How many mirrors does a simple periscope use?
28. 28.🔭 Which of these reflects light poorly? (a) still clear water (b) a mirror (c) black cloth (d) a shiny steel plate
29. 29.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) sticky tape (c) a battery cell (d) a magnet
30. 30.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) an empty juice carton (c) a balloon (d) sticky tape
31. 31.True or false: dark soil reflects light poorly. (a) True (b) False
32. 32.🧺 Which of these is not needed for the periscope? (a) a ruler (b) a magnet (c) two small mirrors (d) a pencil
33. 33.🔮 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
34. 34.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a pencil (c) a ruler (d) turmeric powder
35. 35.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we keep it the same (b) we measure it (c) we change it
36. 36.⚖️ 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
37. 37.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
38. 38.🔍 Which is the odd one out? (a) still clear water (b) a mirror (c) a rough wooden board (d) a shiny steel plate
39. 39.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 180 degrees (c) 10 degrees (d) 45 degrees
40. 40.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we change it (b) we measure it (c) we keep it the same

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