Periscope STEM Project Worksheet

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

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