Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 52 · 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.🧺 Which of these is needed for the periscope? (a) a balloon (b) sticky tape (c) turmeric powder (d) a magnet
2. 2.🔭 Who uses a periscope to look above the water? (a) a farmer (b) a submarine crew (c) a pilot in a plane (d) a baker
3. 3.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the object we look at (b) the same light (c) how clear the view is (d) the angle of the mirrors
4. 4.🔍 Which is the odd one out? (a) dark soil (b) a rough wooden board (c) a mirror (d) black cloth
5. 5.⚖️ 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 change it (c) we measure it
6. 6.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
7. 7.🔍 Which is the odd one out? (a) a mirror (b) a shiny steel plate (c) black cloth (d) still clear water
8. 8.True or false: still clear water reflects light poorly. (a) True (b) False
9. 9.⚖️ 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) False (b) True
10. 10.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) a balloon (c) two small mirrors (d) an empty juice carton
11. 11.🔭 Why must the two mirrors face each other and be parallel? (a) so it can float (b) so light reaches the eye (c) so it looks shiny (d) to make it heavy
12. 12.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) yeast (b) two small mirrors (c) sticky tape (d) a pencil
13. 13.⚖️ 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 measure it (b) we change it (c) we keep it the same
14. 14.True or false: still clear water reflects light well. (a) False (b) True
15. 15.🧺 Which of these is needed for the periscope? (a) vinegar (b) an empty juice carton (c) a balloon (d) turmeric powder
16. 16.True or false: a rough wooden board reflects light well. (a) False (b) True
17. 17.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) sticky tape (c) a magnet (d) an empty juice carton
18. 18.🔭 Which of these reflects light well? (a) a dull brick (b) a mirror (c) a rough wooden board (d) black cloth
19. 19.⚖️ 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 keep it the same (c) we change it
20. 20.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
21. 21.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the object we look at (b) the same light (c) how clear the view is (d) the same carton
22. 22.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
23. 23.True or false: an empty juice carton is needed for the periscope. (a) True (b) False
24. 24.🔭 Which of these reflects light poorly? (a) a mirror (b) dark soil (c) still clear water (d) aluminium foil
25. 25.True or false: sticky tape is needed for the periscope. (a) False (b) True
26. 26.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 10 degrees (c) 180 degrees (d) 45 degrees
27. 27.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) a friend who is running (c) nobody needs to (d) a grown-up
28. 28.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is what we measure. (a) False (b) True
29. 29.🛟 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
30. 30.True or false: two small mirrors is needed for the periscope. (a) True (b) False
31. 31.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) the ground (b) only short walls (c) taller walls (d) nothing at all
32. 32.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is kept the same. (a) False (b) True
33. 33.🔭 How many mirrors does a simple periscope use?
34. 34.⚖️ 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
35. 35.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
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 change it (c) we keep it the same
37. 37.True or false: turmeric powder is not needed for the periscope. (a) False (b) True
38. 38.True or false: a shiny steel plate reflects light poorly. (a) False (b) True
39. 39.🔭 What does a periscope let you do? (a) see in the dark (b) see over a wall (c) hear far sounds (d) see germs
40. 40.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) a tree (c) a wall (d) the Sun

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