Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 787 · 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.📘 Light bouncing off a mirror is called ___. (a) reflection (b) refraction (c) magnetism (d) evaporation
3. 3.🔭 How many mirrors does a simple periscope use?
4. 4.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
5. 5.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) taller walls (b) the ground (c) only short walls (d) nothing at all
6. 6.True or false: a magnet is needed for the periscope. (a) False (b) True
7. 7.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the object we look at”? (a) we change it (b) we keep it the same (c) we measure it
8. 8.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we measure it (b) we change it (c) we keep it the same
9. 9.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) yeast (b) a pencil (c) an empty juice carton (d) sticky tape
10. 10.True or false: a ruler is not needed for the periscope. (a) False (b) True
11. 11.🔍 Which is the odd one out? (a) black cloth (b) a mirror (c) dark soil (d) a rough wooden board
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 mirrors (b) the same carton (c) how clear the view is (d) the angle of the mirrors
13. 13.True or false: dark soil reflects light poorly. (a) False (b) True
14. 14.True or false: a pencil is not needed for the periscope. (a) True (b) False
15. 15.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) an empty juice carton (c) a ruler (d) a balloon
16. 16.True or false: yeast is needed for the periscope. (a) True (b) False
17. 17.True or false: still clear water reflects light poorly. (a) True (b) False
18. 18.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) plastic safety mirrors (c) broken glass bits (d) big wall mirrors
19. 19.🔍 Which is the odd one out? (a) a mirror (b) still clear water (c) a dull brick (d) aluminium foil
20. 20.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
21. 21.🔍 Which is the odd one out? (a) still clear water (b) a rough wooden board (c) a shiny steel plate (d) aluminium foil
22. 22.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) vinegar (c) two small mirrors (d) yeast
23. 23.True or false: a mirror reflects light poorly. (a) False (b) True
24. 24.🧺 Which of these is needed for the periscope? (a) yeast (b) vinegar (c) an empty juice carton (d) a magnet
25. 25.⚖️ 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
26. 26.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) a battery cell (c) sticky tape (d) two small mirrors
27. 27.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
28. 28.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
29. 29.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) flipped left to right (b) in colour (c) much bigger (d) upside down only
30. 30.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
31. 31.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) a tree (c) the Sun (d) a friend’s toy
32. 32.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
33. 33.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
34. 34.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a ruler (c) an empty juice carton (d) vinegar
35. 35.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed
36. 36.🔍 Which is the odd one out? (a) a dull brick (b) still clear water (c) dark soil (d) black cloth
37. 37.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same light (b) the same carton (c) how clear the view is (d) the object we look at
38. 38.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) vinegar (c) an empty juice carton (d) sticky tape
39. 39.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is the one thing we change. (a) True (b) False
40. 40.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed

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