Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 650 · 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.🧺 Do we need a battery cell for the periscope? (a) not needed (b) needed
2. 2.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we keep it the same (b) we measure it (c) we change it
3. 3.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) two small mirrors (c) vinegar (d) a pencil
4. 4.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is the one thing we change. (a) True (b) False
5. 5.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) an empty juice carton (c) yeast (d) a battery cell
6. 6.🔍 Which is the odd one out? (a) black cloth (b) dark soil (c) a dull brick (d) still clear water
7. 7.🔭 Which of these reflects light well? (a) black cloth (b) still clear water (c) a rough wooden board (d) a dull brick
8. 8.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
9. 9.True or false: yeast is not needed for the periscope. (a) True (b) False
10. 10.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
11. 11.⚖️ 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
12. 12.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “how clear the view is”? (a) we keep it the same (b) we change it (c) we measure it
13. 13.🔭 Which of these reflects light well? (a) a shiny steel plate (b) black cloth (c) a dull brick (d) a rough wooden board
14. 14.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) loose glass panes (c) big wall mirrors (d) plastic safety mirrors
15. 15.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) taller walls (b) the ground (c) only short walls (d) nothing at all
16. 16.True or false: a shiny steel plate reflects light poorly. (a) True (b) False
17. 17.⚖️ 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
18. 18.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is what we measure. (a) True (b) False
19. 19.⚖️ 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) the same carton (c) the angle of the mirrors (d) how clear the view is
20. 20.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a pencil (c) a balloon (d) sticky tape
21. 21.🔭 What does a periscope let you do? (a) see germs (b) hear far sounds (c) see over a wall (d) see in the dark
22. 22.True or false: aluminium foil reflects light poorly. (a) True (b) False
23. 23.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
24. 24.🔭 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
25. 25.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well
26. 26.🔭 How many mirrors does a simple periscope use?
27. 27.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 45 degrees (c) 180 degrees (d) 90 degrees
28. 28.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
29. 29.🔭 Which of these reflects light poorly? (a) still clear water (b) a mirror (c) a shiny steel plate (d) a dull brick
30. 30.🔍 Which is the odd one out? (a) still clear water (b) black cloth (c) a mirror (d) aluminium foil
31. 31.True or false: a dull brick reflects light well. (a) True (b) False
32. 32.True or false: a magnet is not needed for the periscope. (a) True (b) False
33. 33.True or false: yeast is needed for the periscope. (a) False (b) True
34. 34.🔭 How many times does light bounce off a mirror in a simple periscope?
35. 35.⚖️ 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
36. 36.🛟 Who should cut the holes in the juice carton? (a) a grown-up (b) a friend who is running (c) nobody needs to (d) the youngest child
37. 37.⚖️ 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
38. 38.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) a ruler (c) a battery cell (d) yeast
39. 39.🛟 You must never point a periscope or a mirror at ___. (a) the Sun (b) a friend’s toy (c) a wall (d) a tree
40. 40.True or false: aluminium foil reflects light well. (a) False (b) True

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