Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 864 · 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.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed
2. 2.🔭 How many times does light bounce off a mirror in a simple periscope?
3. 3.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) upside down only (c) flipped left to right (d) in colour
4. 4.⚖️ 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) the angle of the mirrors (d) the object we look at
5. 5.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) loose glass panes (c) broken glass bits (d) plastic safety mirrors
6. 6.True or false: aluminium foil reflects light well. (a) False (b) True
7. 7.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) sticky tape (c) a pencil (d) yeast
8. 8.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) only darkness (c) two pictures (d) a brighter view
9. 9.⚖️ 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
10. 10.True or false: a dull brick reflects light poorly. (a) True (b) False
11. 11.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
12. 12.True or false: a pencil is needed for the periscope. (a) False (b) True
13. 13.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) how clear the view is (b) the angle of the mirrors (c) the same carton (d) the object we look at
14. 14.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) taller walls (b) only short walls (c) nothing at all (d) the ground
15. 15.🔭 Which of these reflects light poorly? (a) a mirror (b) still clear water (c) a shiny steel plate (d) a dull brick
16. 16.True or false: a shiny steel plate reflects light poorly. (a) False (b) True
17. 17.⚖️ 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) True (b) False
18. 18.🔍 Which is the odd one out? (a) a dull brick (b) still clear water (c) black cloth (d) dark soil
19. 19.⚖️ 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 keep it the same (b) we measure it (c) we change it
20. 20.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
21. 21.🧺 Which of these is not needed for the periscope? (a) a pencil (b) yeast (c) sticky tape (d) a ruler
22. 22.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 180 degrees (c) 45 degrees (d) 90 degrees
23. 23.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
24. 24.⚖️ 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 keep it the same (b) we measure it (c) we change it
25. 25.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) turmeric powder (c) an empty juice carton (d) sticky tape
26. 26.True or false: a balloon is not needed for the periscope. (a) False (b) True
27. 27.🔍 Which is the odd one out? (a) still clear water (b) a mirror (c) aluminium foil (d) black cloth
28. 28.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a pencil (c) a magnet (d) two small mirrors
29. 29.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a friend’s toy (c) a wall (d) the Sun
30. 30.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) a friend who is running (c) nobody needs to (d) a grown-up
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) True (b) False
32. 32.True or false: a mirror reflects light poorly. (a) False (b) True
33. 33.🔭 Why must the two mirrors face each other and be parallel? (a) so it looks shiny (b) so it can float (c) to make it heavy (d) so light reaches the eye
34. 34.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a mirror (c) dark soil (d) a shiny steel plate
35. 35.🧺 Which of these is not needed for the periscope? (a) a magnet (b) a ruler (c) sticky tape (d) a pencil
36. 36.🔍 Which is the odd one out? (a) dark soil (b) aluminium foil (c) black cloth (d) a rough wooden board
37. 37.True or false: a battery cell is needed for the periscope. (a) True (b) False
38. 38.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a battery cell (b) a ruler (c) sticky tape (d) a pencil
39. 39.🧺 Do we need sticky tape for the periscope? (a) needed (b) not needed
40. 40.🧺 Which of these is not needed for the periscope? (a) a ruler (b) a balloon (c) a pencil (d) an empty juice carton

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