Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 910 · 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? True or false: the same light is kept the same. (a) True (b) False
2. 2.🔍 Which is the odd one out? (a) a mirror (b) aluminium foil (c) still clear water (d) a rough wooden board
3. 3.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same mirrors (b) how clear the view is (c) the angle of the mirrors
4. 4.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) a pencil (c) an empty juice carton (d) vinegar
5. 5.🧺 Do we need vinegar for the periscope? (a) not needed (b) needed
6. 6.🔭 Which of these reflects light well? (a) dark soil (b) black cloth (c) a dull brick (d) a mirror
7. 7.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is kept the same. (a) True (b) False
8. 8.True or false: two small mirrors is not needed for the periscope. (a) False (b) True
9. 9.🔭 Which of these reflects light poorly? (a) still clear water (b) a mirror (c) aluminium foil (d) dark soil
10. 10.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
11. 11.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well
12. 12.True or false: sticky tape is needed for the periscope. (a) True (b) False
13. 13.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
14. 14.True or false: sticky tape is not needed for the periscope. (a) True (b) False
15. 15.🔭 Why must the two mirrors face each other and be parallel? (a) to make it heavy (b) so light reaches the eye (c) so it can float (d) so it looks shiny
16. 16.🔭 How many times does light bounce off a mirror in a simple periscope?
17. 17.🔍 Which is the odd one out? (a) aluminium foil (b) still clear water (c) black cloth (d) a shiny steel plate
18. 18.⚖️ 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
19. 19.🧺 Which of these is needed for the periscope? (a) vinegar (b) a balloon (c) a battery cell (d) a ruler
20. 20.⚖️ 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 change it (c) we keep it the same
21. 21.🧺 Which of these is not needed for the periscope? (a) a pencil (b) a ruler (c) turmeric powder (d) an empty juice carton
22. 22.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) big wall mirrors (c) broken glass bits (d) plastic safety mirrors
23. 23.True or false: still clear water reflects light poorly. (a) True (b) False
24. 24.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) a grown-up (c) nobody needs to (d) a friend who is running
25. 25.True or false: a dull brick reflects light well. (a) True (b) False
26. 26.🔍 Which is the odd one out? (a) still clear water (b) a rough wooden board (c) dark soil (d) a dull brick
27. 27.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a pencil (c) turmeric powder (d) sticky tape
28. 28.🔍 Which is the odd one out? (a) a mirror (b) dark soil (c) aluminium foil (d) a shiny steel plate
29. 29.🔭 Does dark soil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
30. 30.True or false: a shiny steel plate reflects light poorly. (a) False (b) True
31. 31.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is what we measure. (a) False (b) True
32. 32.⚖️ 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 carton (b) the object we look at (c) the same light (d) the angle of the mirrors
33. 33.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
34. 34.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
35. 35.⚖️ 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 light (c) the same mirrors (d) the same carton
36. 36.⚖️ 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
37. 37.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) sticky tape (c) a battery cell (d) an empty juice carton
38. 38.True or false: a magnet is not needed for the periscope. (a) False (b) True
39. 39.🔭 How many mirrors does a simple periscope use?
40. 40.🧺 Do we need a battery cell for the periscope? (a) not needed (b) needed

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