Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 239 · 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? Which of these is what we measure? (a) the angle of the mirrors (b) the same mirrors (c) the same carton (d) how clear the view is
2. 2.🛟 Who should cut the holes in the juice carton? (a) a grown-up (b) nobody needs to (c) a friend who is running (d) the youngest child
3. 3.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) a wall (c) a tree (d) the Sun
4. 4.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) turmeric powder (c) sticky tape (d) a pencil
5. 5.🔭 Which of these reflects light well? (a) a rough wooden board (b) black cloth (c) a mirror (d) dark soil
6. 6.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
7. 7.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a pencil (c) a balloon (d) two small mirrors
8. 8.True or false: black cloth reflects light well. (a) True (b) False
9. 9.📘 Light bouncing off a mirror is called ___. (a) reflection (b) evaporation (c) magnetism (d) refraction
10. 10.⚖️ 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 change it (b) we measure it (c) we keep it the same
11. 11.🧺 Do we need a pencil for the periscope? (a) not needed (b) needed
12. 12.⚖️ 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 mirrors (b) how clear the view is (c) the angle of the mirrors (d) the same carton
13. 13.🔍 Which is the odd one out? (a) still clear water (b) a shiny steel plate (c) aluminium foil (d) dark soil
14. 14.🛟 Which mirrors are safest for a children’s periscope? (a) plastic safety mirrors (b) big wall mirrors (c) loose glass panes (d) broken glass bits
15. 15.🔭 How many mirrors does a simple periscope use?
16. 16.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
17. 17.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 45 degrees (c) 180 degrees (d) 10 degrees
18. 18.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
19. 19.🔭 Which of these reflects light poorly? (a) black cloth (b) a shiny steel plate (c) aluminium foil (d) a mirror
20. 20.🔭 Who uses a periscope to look above the water? (a) a pilot in a plane (b) a submarine crew (c) a farmer (d) a baker
21. 21.🔍 Which is the odd one out? (a) a shiny steel plate (b) a mirror (c) a dull brick (d) aluminium foil
22. 22.True or false: a pencil is needed for the periscope. (a) True (b) False
23. 23.True or false: a magnet is needed for the periscope. (a) True (b) False
24. 24.🔭 Which of these reflects light poorly? (a) still clear water (b) a mirror (c) dark soil (d) a shiny steel plate
25. 25.True or false: a shiny steel plate reflects light poorly. (a) True (b) False
26. 26.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is kept the same. (a) False (b) True
27. 27.⚖️ 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
28. 28.⚖️ 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
29. 29.True or false: dark soil reflects light poorly. (a) False (b) True
30. 30.🧺 Which of these is needed for the periscope? (a) a battery cell (b) turmeric powder (c) sticky tape (d) vinegar
31. 31.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) a balloon (c) an empty juice carton (d) two small mirrors
32. 32.True or false: aluminium foil reflects light poorly. (a) True (b) False
33. 33.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) a pencil (c) a ruler (d) a battery cell
34. 34.🔍 Which is the odd one out? (a) black cloth (b) dark soil (c) a dull brick (d) a shiny steel plate
35. 35.⚖️ 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) the same carton (c) how clear the view is
36. 36.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is the one thing we change. (a) True (b) False
37. 37.🔭 How many times does light bounce off a mirror in a simple periscope?
38. 38.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
39. 39.🔍 Which is the odd one out? (a) dark soil (b) aluminium foil (c) a dull brick (d) black cloth
40. 40.True or false: a mirror reflects light poorly. (a) True (b) False

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