Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 753 · 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.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is kept the same. (a) True (b) False
2. 2.True or false: a mirror reflects light poorly. (a) False (b) True
3. 3.🔭 How many times does light bounce off a mirror in a simple periscope?
4. 4.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is the one thing we change. (a) False (b) True
5. 5.🧺 Which of these is needed for the periscope? (a) yeast (b) a ruler (c) a balloon (d) vinegar
6. 6.🧺 Which of these is needed for the periscope? (a) a balloon (b) two small mirrors (c) turmeric powder (d) yeast
7. 7.⚖️ 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 angle of the mirrors (c) the same carton (d) how clear the view is
8. 8.📘 Light bouncing off a mirror is called ___. (a) reflection (b) evaporation (c) refraction (d) magnetism
9. 9.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) nothing at all (b) only short walls (c) taller walls (d) the ground
10. 10.🔭 Does dark soil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
11. 11.🔍 Which is the odd one out? (a) a mirror (b) still clear water (c) aluminium foil (d) black cloth
12. 12.🔍 Which is the odd one out? (a) a shiny steel plate (b) dark soil (c) a mirror (d) still clear water
13. 13.⚖️ 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
14. 14.🔭 What does a periscope let you do? (a) see over a wall (b) see germs (c) see in the dark (d) hear far sounds
15. 15.🔭 Which of these reflects light well? (a) black cloth (b) a dull brick (c) a mirror (d) a rough wooden board
16. 16.🛟 Who should cut the holes in the juice carton? (a) nobody needs to (b) a friend who is running (c) the youngest child (d) a grown-up
17. 17.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
18. 18.🔭 How many mirrors does a simple periscope use?
19. 19.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) two small mirrors (c) a ruler (d) vinegar
20. 20.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) two small mirrors (c) yeast (d) an empty juice carton
21. 21.🔭 Which of these reflects light well? (a) aluminium foil (b) dark soil (c) a rough wooden board (d) black cloth
22. 22.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) sticky tape (c) a balloon (d) a battery cell
23. 23.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) an empty juice carton (c) turmeric powder (d) sticky tape
24. 24.⚖️ 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
25. 25.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
26. 26.🧺 Do we need a magnet for the periscope? (a) not needed (b) needed
27. 27.True or false: a balloon is needed for the periscope. (a) False (b) True
28. 28.🧺 Which of these is not needed for the periscope? (a) a ruler (b) a pencil (c) sticky tape (d) vinegar
29. 29.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
30. 30.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) still clear water (c) aluminium foil (d) a rough wooden board
31. 31.True or false: turmeric powder is needed for the periscope. (a) True (b) False
32. 32.True or false: vinegar is not needed for the periscope. (a) False (b) True
33. 33.🔮 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
34. 34.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a magnet (c) a pencil (d) sticky tape
35. 35.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) big wall mirrors (c) plastic safety mirrors (d) broken glass bits
36. 36.🔭 Which of these reflects light well? (a) black cloth (b) a dull brick (c) dark soil (d) a shiny steel plate
37. 37.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a balloon (b) two small mirrors (c) an empty juice carton (d) a pencil
38. 38.🔭 Which of these reflects light poorly? (a) a mirror (b) a dull brick (c) still clear water (d) aluminium foil
39. 39.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
40. 40.⚖️ 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 measure it (b) we keep it the same (c) we change it

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