Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 791 · 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.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) vinegar (c) a ruler (d) an empty juice carton
2. 2.True or false: black cloth reflects light poorly. (a) True (b) False
3. 3.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
4. 4.True or false: aluminium foil reflects light well. (a) True (b) False
5. 5.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is kept the same. (a) False (b) True
6. 6.True or false: an empty juice carton is needed for the periscope. (a) True (b) False
7. 7.True or false: yeast is needed for the periscope. (a) True (b) False
8. 8.🧺 Do we need a pencil for the periscope? (a) needed (b) not needed
9. 9.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) a rainbow (c) a brighter view (d) only darkness
10. 10.🔭 Which of these reflects light well? (a) a dull brick (b) dark soil (c) aluminium foil (d) black cloth
11. 11.🔭 How many times does light bounce off a mirror in a simple periscope?
12. 12.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
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 object we look at (c) the same carton (d) the same mirrors
14. 14.🔭 At what angle are the mirrors set in a simple periscope? (a) 180 degrees (b) 90 degrees (c) 45 degrees (d) 10 degrees
15. 15.True or false: a mirror reflects light well. (a) False (b) True
16. 16.⚖️ 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
17. 17.🔭 Which of these reflects light poorly? (a) dark soil (b) aluminium foil (c) a mirror (d) still clear water
18. 18.True or false: a battery cell is needed for the periscope. (a) True (b) False
19. 19.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) a grown-up (c) nobody needs to (d) the youngest child
20. 20.🧺 Which of these is needed for the periscope? (a) a battery cell (b) a magnet (c) vinegar (d) a ruler
21. 21.⚖️ 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 change it (c) we keep it the same
22. 22.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) sticky tape (c) a magnet (d) a pencil
23. 23.🔍 Which is the odd one out? (a) still clear water (b) a mirror (c) a shiny steel plate (d) dark soil
24. 24.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
25. 25.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
26. 26.True or false: a rough wooden board reflects light well. (a) True (b) False
27. 27.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
28. 28.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
29. 29.🧺 Do we need a battery cell for the periscope? (a) not needed (b) needed
30. 30.🔍 Which is the odd one out? (a) still clear water (b) a shiny steel plate (c) a mirror (d) black cloth
31. 31.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is kept the same. (a) True (b) False
32. 32.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
33. 33.True or false: a pencil is not needed for the periscope. (a) True (b) False
34. 34.🧺 Which of these is not needed for the periscope? (a) a battery cell (b) sticky tape (c) a pencil (d) an empty juice carton
35. 35.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is kept the same. (a) False (b) True
36. 36.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is what we measure. (a) False (b) True
37. 37.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) plastic safety mirrors (c) loose glass panes (d) big wall mirrors
38. 38.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is kept the same. (a) True (b) False
39. 39.🔭 Which of these reflects light poorly? (a) still clear water (b) black cloth (c) a mirror (d) aluminium foil
40. 40.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a pencil (c) sticky tape (d) a balloon

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