Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 95 · 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 is the odd one out? (a) aluminium foil (b) a mirror (c) a dull brick (d) a shiny steel plate
2. 2.True or false: a mirror reflects light poorly. (a) False (b) True
3. 3.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a wall (c) the Sun (d) a friend’s toy
4. 4.True or false: a ruler is needed for the periscope. (a) False (b) True
5. 5.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is what we measure. (a) False (b) True
6. 6.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is kept the same. (a) False (b) True
7. 7.True or false: a shiny steel plate reflects light well. (a) True (b) False
8. 8.True or false: black cloth reflects light well. (a) False (b) True
9. 9.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a balloon (b) a ruler (c) a pencil (d) an empty juice carton
10. 10.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we change it (b) we keep it the same (c) we measure it
11. 11.True or false: sticky tape is needed for the periscope. (a) False (b) True
12. 12.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
13. 13.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 180 degrees (c) 90 degrees (d) 45 degrees
14. 14.⚖️ 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 object we look at (c) how clear the view is (d) the same mirrors
15. 15.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
16. 16.🔭 Which of these reflects light poorly? (a) still clear water (b) aluminium foil (c) a shiny steel plate (d) dark soil
17. 17.🧺 Which of these is needed for the periscope? (a) an empty juice carton (b) a magnet (c) turmeric powder (d) a battery cell
18. 18.🔭 Who uses a periscope to look above the water? (a) a submarine crew (b) a farmer (c) a pilot in a plane (d) a baker
19. 19.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
20. 20.True or false: a balloon is not needed for the periscope. (a) False (b) True
21. 21.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we keep it the same (b) we measure it (c) we change it
22. 22.True or false: dark soil reflects light poorly. (a) True (b) False
23. 23.🔭 How many times does light bounce off a mirror in a simple periscope?
24. 24.⚖️ 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) True (b) False
25. 25.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is kept the same. (a) True (b) False
26. 26.⚖️ 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
27. 27.🔭 How many mirrors does a simple periscope use?
28. 28.⚖️ 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 light (c) the object we look at (d) the angle of the mirrors
29. 29.True or false: a magnet is not needed for the periscope. (a) True (b) False
30. 30.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is kept the same. (a) False (b) True
31. 31.🛟 Which mirrors are safest for a children’s periscope? (a) plastic safety mirrors (b) broken glass bits (c) big wall mirrors (d) loose glass panes
32. 32.⚖️ 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
33. 33.🔭 What does a periscope let you do? (a) see germs (b) see in the dark (c) hear far sounds (d) see over a wall
34. 34.🔍 Which is the odd one out? (a) a rough wooden board (b) still clear water (c) aluminium foil (d) a mirror
35. 35.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) taller walls (b) only short walls (c) nothing at all (d) the ground
36. 36.True or false: a shiny steel plate reflects light poorly. (a) False (b) True
37. 37.🔭 Which of these reflects light well? (a) aluminium foil (b) black cloth (c) a dull brick (d) dark soil
38. 38.🔍 Which is the odd one out? (a) black cloth (b) a rough wooden board (c) a dull brick (d) a shiny steel plate
39. 39.⚖️ 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
40. 40.🔮 Predict: you cover the top mirror with paper. What do you see? (a) only darkness (b) a rainbow (c) two pictures (d) a brighter view

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