Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 147 · 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? What do we do with “the object we look at”? (a) we change it (b) we measure it (c) we keep it the same
2. 2.🧺 Which of these is needed for the periscope? (a) a balloon (b) sticky tape (c) vinegar (d) turmeric powder
3. 3.🔭 How many times does light bounce off a mirror in a simple periscope?
4. 4.🔭 Which of these reflects light poorly? (a) a mirror (b) still clear water (c) a shiny steel plate (d) dark soil
5. 5.True or false: still clear water reflects light poorly. (a) True (b) False
6. 6.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
7. 7.True or false: turmeric powder is needed for the periscope. (a) True (b) False
8. 8.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) in colour (b) upside down only (c) flipped left to right (d) much bigger
9. 9.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) sticky tape (c) vinegar (d) a ruler
10. 10.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) an empty juice carton (c) a pencil (d) a battery cell
11. 11.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) two small mirrors (c) sticky tape (d) a magnet
12. 12.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
13. 13.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) a tree (c) a friend’s toy (d) the Sun
14. 14.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
15. 15.True or false: yeast is needed for the periscope. (a) True (b) False
16. 16.🔮 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
17. 17.🔭 Which of these reflects light well? (a) dark soil (b) a rough wooden board (c) a mirror (d) black cloth
18. 18.True or false: a balloon is needed for the periscope. (a) True (b) False
19. 19.🔭 Why must the two mirrors face each other and be parallel? (a) so light reaches the eye (b) so it looks shiny (c) to make it heavy (d) so it can float
20. 20.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) sticky tape (c) an empty juice carton (d) a battery cell
21. 21.🔍 Which is the odd one out? (a) a rough wooden board (b) a shiny steel plate (c) black cloth (d) a dull brick
22. 22.True or false: two small mirrors is not needed for the periscope. (a) True (b) False
23. 23.🔭 How many mirrors does a simple periscope use?
24. 24.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) the youngest child (c) nobody needs to (d) a grown-up
25. 25.True or false: an empty juice carton is not needed for the periscope. (a) False (b) True
26. 26.🔍 Which is the odd one out? (a) aluminium foil (b) a dull brick (c) black cloth (d) dark soil
27. 27.🔍 Which is the odd one out? (a) aluminium foil (b) a shiny steel plate (c) dark soil (d) a mirror
28. 28.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a mirror (c) a rough wooden board (d) a shiny steel plate
29. 29.🧺 Which of these is not needed for the periscope? (a) a ruler (b) two small mirrors (c) an empty juice carton (d) turmeric powder
30. 30.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is kept the same. (a) False (b) True
31. 31.🔭 Who uses a periscope to look above the water? (a) a submarine crew (b) a farmer (c) a pilot in a plane (d) a baker
32. 32.🔮 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
33. 33.⚖️ 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) the same carton (c) how clear the view is
34. 34.🛟 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
35. 35.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
36. 36.⚖️ 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
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) the angle of the mirrors (d) how clear the view is
38. 38.🔭 At what angle are the mirrors set in a simple periscope? (a) 45 degrees (b) 90 degrees (c) 180 degrees (d) 10 degrees
39. 39.🧺 Which of these is needed for the periscope? (a) vinegar (b) a balloon (c) an empty juice carton (d) a battery cell
40. 40.True or false: aluminium foil reflects light poorly. (a) True (b) False

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