Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 312 · 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.🔭 Does dark soil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
3. 3.🔍 Which is the odd one out? (a) aluminium foil (b) a dull brick (c) a shiny steel plate (d) a mirror
4. 4.🔍 Which is the odd one out? (a) a rough wooden board (b) a mirror (c) aluminium foil (d) a shiny steel plate
5. 5.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) black cloth (c) a mirror (d) still clear water
6. 6.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 180 degrees (c) 90 degrees (d) 45 degrees
7. 7.True or false: still clear water reflects light well. (a) True (b) False
8. 8.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we measure it (b) we change it (c) we keep it the same
9. 9.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the object we look at (b) how clear the view is (c) the angle of the mirrors
10. 10.⚖️ 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) how clear the view is (d) the same mirrors
11. 11.🔮 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
12. 12.🔭 How many mirrors does a simple periscope use?
13. 13.🔍 Which is the odd one out? (a) a dull brick (b) aluminium foil (c) a rough wooden board (d) dark soil
14. 14.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) a grown-up (c) the youngest child (d) nobody needs to
15. 15.🔭 Which of these reflects light well? (a) a rough wooden board (b) a shiny steel plate (c) black cloth (d) dark soil
16. 16.True or false: a balloon is needed for the periscope. (a) False (b) True
17. 17.🔭 Which of these reflects light poorly? (a) aluminium foil (b) still clear water (c) a mirror (d) a dull brick
18. 18.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) a friend’s toy (c) a tree (d) the Sun
19. 19.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) the ground (b) nothing at all (c) only short walls (d) taller walls
20. 20.🔭 How many times does light bounce off a mirror in a simple periscope?
21. 21.🔭 Who uses a periscope to look above the water? (a) a pilot in a plane (b) a submarine crew (c) a baker (d) a farmer
22. 22.True or false: a dull brick reflects light poorly. (a) False (b) True
23. 23.⚖️ 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
24. 24.🧺 Which of these is needed for the periscope? (a) an empty juice carton (b) a balloon (c) turmeric powder (d) vinegar
25. 25.⚖️ 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) how clear the view is (c) the angle of the mirrors (d) the object we look at
26. 26.True or false: yeast is not needed for the periscope. (a) False (b) True
27. 27.🧺 Which of these is needed for the periscope? (a) vinegar (b) a magnet (c) two small mirrors (d) yeast
28. 28.True or false: a balloon is not needed for the periscope. (a) False (b) True
29. 29.True or false: aluminium foil 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 magnet (c) a ruler (d) sticky tape
31. 31.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) a battery cell (c) a pencil (d) sticky tape
32. 32.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
33. 33.🔭 Why must the two mirrors face each other and be parallel? (a) so light reaches the eye (b) to make it heavy (c) so it looks shiny (d) so it can float
34. 34.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a ruler (c) an empty juice carton (d) yeast
35. 35.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
36. 36.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a balloon (c) a pencil (d) an empty juice carton
37. 37.🧺 Which of these is needed for the periscope? (a) a pencil (b) a balloon (c) a magnet (d) vinegar
38. 38.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
39. 39.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) vinegar (b) a pencil (c) a ruler (d) an empty juice carton
40. 40.🔍 Which is the odd one out? (a) a dull brick (b) dark soil (c) black cloth (d) a shiny steel plate

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