Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 338 · 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.True or false: black cloth reflects light poorly. (a) False (b) True
2. 2.True or false: aluminium foil reflects light poorly. (a) False (b) True
3. 3.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) aluminium foil (c) black cloth (d) a mirror
4. 4.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) a tree (c) a wall (d) the Sun
5. 5.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) loose glass panes (c) plastic safety mirrors (d) big wall mirrors
6. 6.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) an empty juice carton (c) two small mirrors (d) a magnet
7. 7.🔍 Which is the odd one out? (a) aluminium foil (b) still clear water (c) a shiny steel plate (d) black cloth
8. 8.🧺 Do we need a pencil for the periscope? (a) needed (b) not needed
9. 9.True or false: a rough wooden board reflects light poorly. (a) True (b) False
10. 10.🔭 Which of these reflects light poorly? (a) a mirror (b) a rough wooden board (c) still clear water (d) a shiny steel plate
11. 11.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) nothing at all (c) the ground (d) taller walls
12. 12.🔮 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
13. 13.⚖️ 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
14. 14.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) an empty juice carton (c) two small mirrors (d) vinegar
15. 15.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is what we measure. (a) False (b) True
16. 16.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is what we measure. (a) False (b) True
17. 17.🧺 Which of these is not needed for the periscope? (a) yeast (b) two small mirrors (c) sticky tape (d) a pencil
18. 18.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the same mirrors (b) the same carton (c) how clear the view is (d) the angle of the mirrors
19. 19.🔍 Which is the odd one out? (a) dark soil (b) black cloth (c) a rough wooden board (d) still clear water
20. 20.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed
21. 21.True or false: a dull brick reflects light well. (a) False (b) True
22. 22.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we change it (b) we keep it the same (c) we measure it
23. 23.🧺 Which of these is needed for the periscope? (a) vinegar (b) turmeric powder (c) a ruler (d) a balloon
24. 24.🔭 Which of these reflects light well? (a) a dull brick (b) black cloth (c) a shiny steel plate (d) a rough wooden board
25. 25.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is kept the same. (a) False (b) True
26. 26.True or false: turmeric powder is not needed for the periscope. (a) True (b) False
27. 27.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) flipped left to right (b) in colour (c) upside down only (d) much bigger
28. 28.🧺 Which of these is not needed for the periscope? (a) a balloon (b) sticky tape (c) a ruler (d) two small mirrors
29. 29.True or false: yeast is not needed for the periscope. (a) True (b) False
30. 30.🔭 How many mirrors does a simple periscope use?
31. 31.True or false: yeast is needed for the periscope. (a) True (b) False
32. 32.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
33. 33.🛟 Who should cut the holes in the juice carton? (a) a grown-up (b) the youngest child (c) a friend who is running (d) nobody needs to
34. 34.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
35. 35.⚖️ 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) True (b) False
36. 36.🔭 How many times does light bounce off a mirror in a simple periscope?
37. 37.🔭 Who uses a periscope to look above the water? (a) a baker (b) a pilot in a plane (c) a submarine crew (d) a farmer
38. 38.🧺 Which of these is not needed for the periscope? (a) a magnet (b) a ruler (c) two small mirrors (d) an empty juice carton
39. 39.🔍 Which is the odd one out? (a) a shiny steel plate (b) aluminium foil (c) a rough wooden board (d) a mirror
40. 40.🧺 Which of these is needed for the periscope? (a) two small mirrors (b) a balloon (c) vinegar (d) a magnet

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