Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 740 · 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.🛟 Who should cut the holes in the juice carton? (a) nobody needs to (b) a friend who is running (c) a grown-up (d) the youngest child
2. 2.⚖️ 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) how clear the view is (d) the angle of the mirrors
3. 3.🔭 Which of these reflects light well? (a) dark soil (b) a mirror (c) a rough wooden board (d) black cloth
4. 4.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) two small mirrors (c) turmeric powder (d) an empty juice carton
5. 5.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
6. 6.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) a mirror (c) a rough wooden board (d) still clear water
7. 7.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) two small mirrors (c) sticky tape (d) a magnet
8. 8.🔭 How many mirrors does a simple periscope use?
9. 9.🔭 Which of these reflects light poorly? (a) black cloth (b) still clear water (c) a mirror (d) a shiny steel plate
10. 10.🔍 Which is the odd one out? (a) a mirror (b) a shiny steel plate (c) aluminium foil (d) a rough wooden board
11. 11.🔭 Which of these reflects light well? (a) dark soil (b) black cloth (c) still clear water (d) a rough wooden board
12. 12.🧺 Which of these is not needed for the periscope? (a) vinegar (b) an empty juice carton (c) a pencil (d) two small mirrors
13. 13.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
14. 14.🔍 Which is the odd one out? (a) a shiny steel plate (b) black cloth (c) a dull brick (d) dark soil
15. 15.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 45 degrees (c) 180 degrees (d) 90 degrees
16. 16.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
17. 17.🔍 Which is the odd one out? (a) dark soil (b) black cloth (c) a dull brick (d) still clear water
18. 18.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) plastic safety mirrors (c) big wall mirrors (d) broken glass bits
19. 19.🧺 Which of these is needed for the periscope? (a) vinegar (b) a balloon (c) a battery cell (d) an empty juice carton
20. 20.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) sticky tape (c) two small mirrors (d) a balloon
21. 21.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a battery cell (c) an empty juice carton (d) a pencil
22. 22.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a pencil (c) a ruler (d) yeast
23. 23.True or false: turmeric powder is needed for the periscope. (a) False (b) True
24. 24.🔍 Which is the odd one out? (a) still clear water (b) aluminium foil (c) dark soil (d) a mirror
25. 25.⚖️ 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
26. 26.🧺 Do we need a pencil for the periscope? (a) needed (b) not needed
27. 27.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we keep it the same (b) we measure it (c) we change it
28. 28.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
29. 29.🧺 Which of these is needed for the periscope? (a) a battery cell (b) sticky tape (c) yeast (d) a balloon
30. 30.⚖️ 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
31. 31.📘 Light bouncing off a mirror is called ___. (a) reflection (b) evaporation (c) magnetism (d) refraction
32. 32.🧺 Do we need vinegar for the periscope? (a) not needed (b) needed
33. 33.True or false: a shiny steel plate reflects light well. (a) False (b) True
34. 34.🧺 Do we need sticky tape for the periscope? (a) needed (b) not needed
35. 35.🧺 Which of these is needed for the periscope? (a) a balloon (b) a battery cell (c) vinegar (d) two small mirrors
36. 36.🔭 How many times does light bounce off a mirror in a simple periscope?
37. 37.True or false: a dull brick reflects light well. (a) True (b) False
38. 38.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) turmeric powder (c) an empty juice carton (d) a pencil
39. 39.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same mirrors (b) the angle of the mirrors (c) how clear the view is (d) the same light
40. 40.⚖️ 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

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