Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 416 · 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: how clear the view is is the one thing we change. (a) True (b) False
2. 2.⚖️ 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 keep it the same (b) we measure it (c) we change it
3. 3.🧺 Which of these is not needed for the periscope? (a) a magnet (b) a pencil (c) a ruler (d) an empty juice carton
4. 4.True or false: yeast is not needed for the periscope. (a) False (b) True
5. 5.🔍 Which is the odd one out? (a) a mirror (b) a shiny steel plate (c) a dull brick (d) still clear water
6. 6.🔭 Which of these reflects light poorly? (a) still clear water (b) a shiny steel plate (c) a dull brick (d) aluminium foil
7. 7.True or false: black cloth reflects light poorly. (a) True (b) False
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 measure it (b) we change it (c) we keep it the same
9. 9.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the angle of the mirrors”? (a) we keep it the same (b) we measure it (c) we change it
10. 10.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the angle of the mirrors (b) how clear the view is (c) the same carton
11. 11.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) a pencil (c) turmeric powder (d) sticky tape
12. 12.🔭 How many times does light bounce off a mirror in a simple periscope?
13. 13.🔍 Which is the odd one out? (a) a shiny steel plate (b) still clear water (c) black cloth (d) a mirror
14. 14.True or false: sticky tape is needed for the periscope. (a) False (b) True
15. 15.🔭 What does a periscope let you do? (a) see germs (b) hear far sounds (c) see over a wall (d) see in the dark
16. 16.True or false: an empty juice carton is not needed for the periscope. (a) False (b) True
17. 17.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
18. 18.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) how clear the view is (b) the angle of the mirrors (c) the object we look at
19. 19.🔭 Does black cloth 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 of these reflects light poorly? (a) aluminium foil (b) a shiny steel plate (c) a mirror (d) dark soil
22. 22.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) vinegar (c) a battery cell (d) an empty juice carton
23. 23.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) turmeric powder (c) an empty juice carton (d) sticky tape
24. 24.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) plastic safety mirrors (c) big wall mirrors (d) loose glass panes
25. 25.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) yeast (c) an empty juice carton (d) a pencil
26. 26.⚖️ 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 angle of the mirrors (c) how clear the view is (d) the same light
27. 27.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 45 degrees (c) 180 degrees (d) 10 degrees
28. 28.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) sticky tape (c) two small mirrors (d) a balloon
29. 29.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is the one thing we change. (a) False (b) True
30. 30.🔭 How many mirrors does a simple periscope use?
31. 31.🧺 Which of these is needed for the periscope? (a) a magnet (b) a battery cell (c) a pencil (d) yeast
32. 32.🔭 Why must the two mirrors face each other and be parallel? (a) so light reaches the eye (b) so it can float (c) so it looks shiny (d) to make it heavy
33. 33.⚖️ 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
34. 34.True or false: a dull brick reflects light well. (a) True (b) False
35. 35.🧺 Which of these is needed for the periscope? (a) vinegar (b) two small mirrors (c) yeast (d) a balloon
36. 36.🔭 Who uses a periscope to look above the water? (a) a pilot in a plane (b) a farmer (c) a baker (d) a submarine crew
37. 37.True or false: dark soil reflects light poorly. (a) False (b) True
38. 38.🧺 Which of these is needed for the periscope? (a) vinegar (b) a magnet (c) a ruler (d) turmeric powder
39. 39.True or false: a magnet is needed for the periscope. (a) False (b) True
40. 40.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well

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