Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 428 · 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.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
2. 2.🔭 Why must the two mirrors face each other and be parallel? (a) so it can float (b) so it looks shiny (c) so light reaches the eye (d) to make it heavy
3. 3.🔭 Which of these reflects light well? (a) black cloth (b) a dull brick (c) a rough wooden board (d) a shiny steel plate
4. 4.⚖️ 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 measure it (b) we keep it the same (c) we change it
5. 5.🔭 Which of these reflects light poorly? (a) a mirror (b) dark soil (c) a shiny steel plate (d) aluminium foil
6. 6.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) vinegar (c) an empty juice carton (d) a ruler
7. 7.⚖️ 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
8. 8.🛟 Which mirrors are safest for a children’s periscope? (a) plastic safety mirrors (b) loose glass panes (c) big wall mirrors (d) broken glass bits
9. 9.🔭 Which of these reflects light poorly? (a) black cloth (b) aluminium foil (c) a mirror (d) still clear water
10. 10.True or false: yeast is needed for the periscope. (a) True (b) False
11. 11.True or false: a ruler is needed for the periscope. (a) False (b) True
12. 12.⚖️ 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 change it (c) we keep it the same
13. 13.⚖️ 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 keep it the same (c) we change it
14. 14.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) two pictures (c) a rainbow (d) only darkness
15. 15.🔭 How many times does light bounce off a mirror in a simple periscope?
16. 16.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) a grown-up (c) a friend who is running (d) nobody needs to
17. 17.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
18. 18.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
19. 19.🧺 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) yeast
20. 20.🔍 Which is the odd one out? (a) a mirror (b) dark soil (c) still clear water (d) a shiny steel plate
21. 21.True or false: two small mirrors is not needed for the periscope. (a) True (b) False
22. 22.True or false: a mirror reflects light poorly. (a) True (b) False
23. 23.⚖️ 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) True (b) False
24. 24.🧺 Do we need vinegar for the periscope? (a) not needed (b) needed
25. 25.🧺 Do we need sticky tape for the periscope? (a) needed (b) not needed
26. 26.True or false: sticky tape is not needed for the periscope. (a) False (b) True
27. 27.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is the one thing we change. (a) True (b) False
28. 28.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) a battery cell (c) sticky tape (d) a pencil
29. 29.True or false: a shiny steel plate reflects light poorly. (a) True (b) False
30. 30.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
31. 31.🧺 Which of these is not needed for the periscope? (a) a ruler (b) vinegar (c) two small mirrors (d) an empty juice carton
32. 32.🔭 Which of these reflects light poorly? (a) still clear water (b) a dull brick (c) a mirror (d) a shiny steel plate
33. 33.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
34. 34.True or false: two small mirrors is needed for the periscope. (a) True (b) False
35. 35.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) a balloon (c) sticky tape (d) an empty juice carton
36. 36.True or false: vinegar is needed for the periscope. (a) False (b) True
37. 37.⚖️ 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
38. 38.True or false: an empty juice carton is not needed for the periscope. (a) True (b) False
39. 39.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 90 degrees (c) 45 degrees (d) 180 degrees
40. 40.True or false: still clear water reflects light well. (a) False (b) True

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