Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 803 · 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.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) flipped left to right (b) upside down only (c) much bigger (d) in colour
2. 2.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
3. 3.🔍 Which is the odd one out? (a) aluminium foil (b) dark soil (c) a mirror (d) still clear water
4. 4.📘 Light bouncing off a mirror is called ___. (a) reflection (b) refraction (c) magnetism (d) evaporation
5. 5.True or false: an empty juice carton is not needed for the periscope. (a) False (b) True
6. 6.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) vinegar (b) two small mirrors (c) a ruler (d) sticky tape
7. 7.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is what we measure. (a) False (b) True
8. 8.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) a wall (c) a tree (d) the Sun
9. 9.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is what we measure. (a) True (b) False
10. 10.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we keep it the same (b) we measure it (c) we change it
11. 11.🔭 What does a periscope let you do? (a) hear far sounds (b) see germs (c) see over a wall (d) see in the dark
12. 12.⚖️ 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 light (b) the same carton (c) the angle of the mirrors (d) the object we look at
13. 13.🔭 How many mirrors does a simple periscope use?
14. 14.🔭 How many times does light bounce off a mirror in a simple periscope?
15. 15.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
16. 16.🧺 Which of these is needed for the periscope? (a) a balloon (b) vinegar (c) an empty juice carton (d) turmeric powder
17. 17.🔍 Which is the odd one out? (a) aluminium foil (b) black cloth (c) a dull brick (d) a rough wooden board
18. 18.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
19. 19.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is what we measure. (a) True (b) False
20. 20.🧺 Do we need a pencil for the periscope? (a) not needed (b) needed
21. 21.🔭 Which of these reflects light well? (a) dark soil (b) a rough wooden board (c) aluminium foil (d) black cloth
22. 22.🔍 Which is the odd one out? (a) black cloth (b) a shiny steel plate (c) aluminium foil (d) still clear water
23. 23.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same carton (b) the same mirrors (c) the angle of the mirrors (d) how clear the view is
24. 24.🔍 Which is the odd one out? (a) a shiny steel plate (b) a mirror (c) a dull brick (d) still clear water
25. 25.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) big wall mirrors (c) broken glass bits (d) plastic safety mirrors
26. 26.🔭 Which of these reflects light well? (a) black cloth (b) a dull brick (c) dark soil (d) a shiny steel plate
27. 27.🔭 Which of these reflects light well? (a) black cloth (b) a dull brick (c) still clear water (d) dark soil
28. 28.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 45 degrees (c) 180 degrees (d) 90 degrees
29. 29.🔭 Which of these reflects light poorly? (a) aluminium foil (b) still clear water (c) a rough wooden board (d) a shiny steel plate
30. 30.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed
31. 31.True or false: aluminium foil reflects light poorly. (a) True (b) False
32. 32.⚖️ 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
33. 33.🔭 Who uses a periscope to look above the water? (a) a farmer (b) a submarine crew (c) a baker (d) a pilot in a plane
34. 34.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
35. 35.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
36. 36.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
37. 37.🔮 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
38. 38.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) an empty juice carton (c) a ruler (d) a magnet
39. 39.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
40. 40.🔍 Which is the odd one out? (a) a dull brick (b) a rough wooden board (c) a mirror (d) black cloth

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