Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 653 · 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.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) taller walls (b) nothing at all (c) only short walls (d) the ground
2. 2.🧺 Which of these is needed for the periscope? (a) a balloon (b) a ruler (c) a battery cell (d) a magnet
3. 3.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same mirrors (b) how clear the view is (c) the angle of the mirrors (d) the object we look at
4. 4.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
5. 5.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) an empty juice carton (c) a pencil (d) turmeric powder
6. 6.True or false: a rough wooden board reflects light well. (a) False (b) True
7. 7.🔭 At what angle are the mirrors set in a simple periscope? (a) 45 degrees (b) 10 degrees (c) 90 degrees (d) 180 degrees
8. 8.🧺 Do we need a pencil for the periscope? (a) needed (b) not needed
9. 9.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we keep it the same (b) we change it (c) we measure it
10. 10.🔍 Which is the odd one out? (a) aluminium foil (b) a shiny steel plate (c) a mirror (d) black cloth
11. 11.🔭 How many times does light bounce off a mirror in a simple periscope?
12. 12.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
13. 13.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a magnet (b) a pencil (c) an empty juice carton (d) sticky tape
14. 14.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well
15. 15.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) only darkness (c) a rainbow (d) a brighter view
16. 16.⚖️ 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
17. 17.🔍 Which is the odd one out? (a) a mirror (b) a dull brick (c) a shiny steel plate (d) aluminium foil
18. 18.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) sticky tape (c) two small mirrors (d) a battery cell
19. 19.🔭 What does a periscope let you do? (a) see germs (b) see in the dark (c) see over a wall (d) hear far sounds
20. 20.⚖️ 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
21. 21.True or false: a pencil is needed for the periscope. (a) False (b) True
22. 22.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed
23. 23.🔭 How many mirrors does a simple periscope use?
24. 24.🔍 Which is the odd one out? (a) a rough wooden board (b) aluminium foil (c) a mirror (d) a shiny steel plate
25. 25.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
26. 26.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
27. 27.True or false: a shiny steel plate reflects light poorly. (a) True (b) False
28. 28.🛟 Who should cut the holes in the juice carton? (a) a grown-up (b) a friend who is running (c) the youngest child (d) nobody needs to
29. 29.True or false: a pencil is not needed for the periscope. (a) False (b) True
30. 30.🔭 Which of these reflects light well? (a) black cloth (b) a dull brick (c) a mirror (d) a rough wooden board
31. 31.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same carton (b) how clear the view is (c) the angle of the mirrors
32. 32.🔍 Which is the odd one out? (a) black cloth (b) a dull brick (c) dark soil (d) a mirror
33. 33.True or false: dark soil reflects light poorly. (a) True (b) False
34. 34.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) loose glass panes (c) broken glass bits (d) plastic safety mirrors
35. 35.🔭 Which of these reflects light poorly? (a) a mirror (b) still clear water (c) a shiny steel plate (d) dark soil
36. 36.⚖️ 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) the same mirrors (d) the same light
37. 37.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is kept the same. (a) True (b) False
38. 38.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) a balloon (c) two small mirrors (d) sticky tape
39. 39.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is what we measure. (a) True (b) False
40. 40.⚖️ 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

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