Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 568 · 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 is the odd one out? (a) still clear water (b) a shiny steel plate (c) aluminium foil (d) dark soil
2. 2.⚖️ 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 same carton (c) the same mirrors (d) the angle of the mirrors
3. 3.🔭 Which of these reflects light well? (a) dark soil (b) a dull brick (c) black cloth (d) aluminium foil
4. 4.True or false: a shiny steel plate reflects light poorly. (a) True (b) False
5. 5.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a ruler (c) a magnet (d) a pencil
6. 6.🔭 How many mirrors does a simple periscope use?
7. 7.True or false: still clear water reflects light poorly. (a) False (b) True
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 change it (b) we keep it the same (c) we measure it
9. 9.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
10. 10.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) two small mirrors (c) a balloon (d) sticky tape
11. 11.🔭 How many times does light bounce off a mirror in a simple periscope?
12. 12.🔍 Which is the odd one out? (a) still clear water (b) a shiny steel plate (c) aluminium foil (d) a rough wooden board
13. 13.🧺 Do we need a balloon for the periscope? (a) not needed (b) needed
14. 14.True or false: dark soil reflects light poorly. (a) True (b) False
15. 15.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) aluminium foil (c) black cloth (d) a mirror
16. 16.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
17. 17.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same carton (b) how clear the view is (c) the angle of the mirrors
18. 18.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
19. 19.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
20. 20.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
21. 21.🛟 Which mirrors are safest for a children’s periscope? (a) plastic safety mirrors (b) loose glass panes (c) broken glass bits (d) big wall mirrors
22. 22.🔭 Why must the two mirrors face each other and be parallel? (a) so it can float (b) so light reaches the eye (c) to make it heavy (d) so it looks shiny
23. 23.True or false: aluminium foil reflects light well. (a) False (b) True
24. 24.🔭 Which of these reflects light well? (a) a dull brick (b) a rough wooden board (c) black cloth (d) a mirror
25. 25.🛟 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
26. 26.🧺 Which of these is not needed for the periscope? (a) turmeric powder (b) a pencil (c) two small mirrors (d) an empty juice carton
27. 27.🧺 Which of these is needed for the periscope? (a) a magnet (b) turmeric powder (c) a balloon (d) an empty juice carton
28. 28.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) a rainbow (c) only darkness (d) a brighter view
29. 29.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) vinegar (c) a pencil (d) an empty juice carton
30. 30.🔭 Which of these reflects light poorly? (a) still clear water (b) a rough wooden board (c) a mirror (d) a shiny steel plate
31. 31.🔍 Which is the odd one out? (a) black cloth (b) a shiny steel plate (c) a mirror (d) aluminium foil
32. 32.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) an empty juice carton (c) a ruler (d) turmeric powder
33. 33.🧺 Which of these is needed for the periscope? (a) a balloon (b) a battery cell (c) a ruler (d) vinegar
34. 34.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
35. 35.⚖️ 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) how clear the view is (c) the same carton (d) the angle of the mirrors
36. 36.⚖️ 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) False (b) True
37. 37.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
38. 38.True or false: vinegar is not needed for the periscope. (a) False (b) True
39. 39.True or false: a magnet is not needed for the periscope. (a) False (b) True
40. 40.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we measure it (b) we keep it the same (c) we change it

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