Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 376 · 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.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) the Sun (c) a wall (d) a tree
2. 2.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
3. 3.🔭 Who uses a periscope to look above the water? (a) a farmer (b) a baker (c) a pilot in a plane (d) a submarine crew
4. 4.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
5. 5.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) flipped left to right (c) upside down only (d) in colour
6. 6.🔭 Which of these reflects light well? (a) black cloth (b) still clear water (c) a rough wooden board (d) dark soil
7. 7.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) how clear the view is (b) the angle of the mirrors (c) the same mirrors
8. 8.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) only darkness (c) a brighter view (d) a rainbow
9. 9.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a pencil (c) a ruler (d) a magnet
10. 10.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) a balloon (c) sticky tape (d) a pencil
11. 11.🔭 Which of these reflects light poorly? (a) aluminium foil (b) still clear water (c) a shiny steel plate (d) dark soil
12. 12.📘 Light bouncing off a mirror is called ___. (a) evaporation (b) magnetism (c) reflection (d) refraction
13. 13.⚖️ 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 keep it the same (b) we measure it (c) we change it
14. 14.True or false: black cloth reflects light well. (a) True (b) False
15. 15.🛟 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
16. 16.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the object we look at (b) the same carton (c) the angle of the mirrors (d) the same mirrors
17. 17.🔭 How many mirrors does a simple periscope use?
18. 18.⚖️ 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
19. 19.🔭 How many times does light bounce off a mirror in a simple periscope?
20. 20.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
21. 21.🧺 Which of these is needed for the periscope? (a) an empty juice carton (b) a magnet (c) vinegar (d) a balloon
22. 22.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
23. 23.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
24. 24.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) the ground (c) taller walls (d) nothing at all
25. 25.🔍 Which is the odd one out? (a) aluminium foil (b) a shiny steel plate (c) a dull brick (d) a mirror
26. 26.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we measure it (b) we change it (c) we keep it the same
27. 27.🧺 Which of these is not needed for the periscope? (a) yeast (b) two small mirrors (c) an empty juice carton (d) a pencil
28. 28.🧺 Which of these is needed for the periscope? (a) vinegar (b) sticky tape (c) yeast (d) turmeric powder
29. 29.True or false: a balloon is not needed for the periscope. (a) False (b) True
30. 30.🔭 What does a periscope let you do? (a) see germs (b) hear far sounds (c) see in the dark (d) see over a wall
31. 31.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the angle of the mirrors (b) the same mirrors (c) how clear the view is (d) the object we look at
32. 32.🧺 Do we need vinegar for the periscope? (a) not needed (b) needed
33. 33.True or false: a shiny steel plate reflects light well. (a) False (b) True
34. 34.🧺 Do we need a pencil for the periscope? (a) needed (b) not needed
35. 35.⚖️ 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) how clear the view is (c) the same carton
36. 36.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) turmeric powder (b) a pencil (c) a ruler (d) an empty juice carton
37. 37.True or false: aluminium foil reflects light poorly. (a) True (b) False
38. 38.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
39. 39.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
40. 40.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) a ruler (c) a battery cell (d) vinegar

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