Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 785 · 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 reflects light well? (a) a rough wooden board (b) a dull brick (c) a mirror (d) dark soil
2. 2.🧺 Which of these is needed for the periscope? (a) a balloon (b) a pencil (c) turmeric powder (d) a magnet
3. 3.True or false: a shiny steel plate reflects light poorly. (a) True (b) False
4. 4.True or false: sticky tape is not needed for the periscope. (a) True (b) False
5. 5.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) taller walls (b) only short walls (c) the ground (d) nothing at all
6. 6.🔍 Which is the odd one out? (a) aluminium foil (b) black cloth (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 the one thing we change? (a) the same light (b) the same carton (c) how clear the view is (d) the angle of the mirrors
8. 8.🔭 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
9. 9.🔍 Which is the odd one out? (a) black cloth (b) still clear water (c) aluminium foil (d) a shiny steel plate
10. 10.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a magnet (c) two small mirrors (d) an empty juice carton
11. 11.⚖️ 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 object we look at (c) how clear the view is
12. 12.🧺 Which of these is needed for the periscope? (a) vinegar (b) a balloon (c) yeast (d) two small mirrors
13. 13.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) a tree (c) the Sun (d) a friend’s toy
14. 14.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we measure it (b) we keep it the same (c) we change it
15. 15.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
16. 16.🔭 Does dark soil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
17. 17.🧺 Do we need a magnet for the periscope? (a) not needed (b) needed
18. 18.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) big wall mirrors (c) loose glass panes (d) plastic safety mirrors
19. 19.True or false: a shiny steel plate reflects light well. (a) False (b) True
20. 20.🧺 Do we need yeast for the periscope? (a) not needed (b) needed
21. 21.⚖️ 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 change it (c) we keep it the same
22. 22.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) in colour (c) flipped left to right (d) much bigger
23. 23.🔭 How many times does light bounce off a mirror in a simple periscope?
24. 24.🔭 What does a periscope let you do? (a) see in the dark (b) see germs (c) hear far sounds (d) see over a wall
25. 25.⚖️ 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
26. 26.🔭 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
27. 27.🔍 Which is the odd one out? (a) a shiny steel plate (b) a dull brick (c) a mirror (d) aluminium foil
28. 28.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
29. 29.🧺 Do we need a pencil for the periscope? (a) needed (b) not needed
30. 30.True or false: a pencil is not needed for the periscope. (a) True (b) False
31. 31.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) a dull brick (c) still clear water (d) aluminium foil
32. 32.True or false: a mirror reflects light poorly. (a) False (b) True
33. 33.🔍 Which is the odd one out? (a) a rough wooden board (b) a shiny steel plate (c) black cloth (d) dark soil
34. 34.⚖️ 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
35. 35.True or false: a dull brick reflects light well. (a) True (b) False
36. 36.🧺 Which of these is not needed for the periscope? (a) a balloon (b) two small mirrors (c) an empty juice carton (d) a ruler
37. 37.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
38. 38.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “how clear the view is”? (a) we change it (b) we measure it (c) we keep it the same
39. 39.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
40. 40.⚖️ 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

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