Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 134 · 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.🔍 Which is the odd one out? (a) a rough wooden board (b) black cloth (c) dark soil (d) aluminium foil
2. 2.True or false: a battery cell is not needed for the periscope. (a) False (b) True
3. 3.🔭 Which of these reflects light poorly? (a) black cloth (b) a shiny steel plate (c) a mirror (d) aluminium foil
4. 4.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) sticky tape (c) a balloon (d) a ruler
5. 5.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
6. 6.⚖️ 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 keep it the same (c) we change it
7. 7.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we keep it the same (b) we change it (c) we measure it
8. 8.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) nothing at all (b) the ground (c) only short walls (d) taller walls
9. 9.⚖️ 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 measure it (c) we keep it the same
10. 10.🔭 Which of these reflects light well? (a) black cloth (b) still clear water (c) dark soil (d) a rough wooden board
11. 11.🧺 Which of these is needed for the periscope? (a) a battery cell (b) yeast (c) an empty juice carton (d) a balloon
12. 12.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) big wall mirrors (c) loose glass panes (d) plastic safety mirrors
13. 13.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) turmeric powder (c) sticky tape (d) two small mirrors
14. 14.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
15. 15.⚖️ 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
16. 16.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) in colour (c) flipped left to right (d) upside down only
17. 17.🔭 How many times does light bounce off a mirror in a simple periscope?
18. 18.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
19. 19.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) a ruler (c) a battery cell (d) a pencil
20. 20.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) yeast (c) a ruler (d) vinegar
21. 21.🔍 Which is the odd one out? (a) aluminium foil (b) dark soil (c) a mirror (d) a shiny steel plate
22. 22.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
23. 23.🧺 Which of these is not needed for the periscope? (a) a pencil (b) a magnet (c) an empty juice carton (d) two small mirrors
24. 24.🔍 Which is the odd one out? (a) still clear water (b) a shiny steel plate (c) aluminium foil (d) black cloth
25. 25.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is the one thing we change. (a) False (b) True
26. 26.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
27. 27.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the object we look at (b) how clear the view is (c) the angle of the mirrors
28. 28.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
29. 29.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
30. 30.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is kept the same. (a) True (b) False
31. 31.🧺 Which of these is needed for the periscope? (a) a balloon (b) yeast (c) a magnet (d) sticky tape
32. 32.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is the one thing we change. (a) False (b) True
33. 33.True or false: sticky tape is needed for the periscope. (a) False (b) True
34. 34.📘 Light bouncing off a mirror is called ___. (a) reflection (b) magnetism (c) refraction (d) evaporation
35. 35.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
36. 36.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) a friend’s toy (c) the Sun (d) a tree
37. 37.🔭 Does dark soil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
38. 38.True or false: vinegar is needed for the periscope. (a) True (b) False
39. 39.🔍 Which is the odd one out? (a) black cloth (b) still clear water (c) a dull brick (d) dark soil
40. 40.⚖️ 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

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