Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 924 · 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.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
2. 2.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a pencil (c) sticky tape (d) a magnet
3. 3.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) a grown-up (c) nobody needs to (d) a friend who is running
4. 4.True or false: dark soil reflects light well. (a) True (b) False
5. 5.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) flipped left to right (b) in colour (c) much bigger (d) upside down only
6. 6.🔍 Which is the odd one out? (a) a rough wooden board (b) a dull brick (c) black cloth (d) a shiny steel plate
7. 7.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
8. 8.⚖️ 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 keep it the same (c) we change it
9. 9.🔭 At what angle are the mirrors set in a simple periscope? (a) 180 degrees (b) 10 degrees (c) 90 degrees (d) 45 degrees
10. 10.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) turmeric powder (b) sticky tape (c) a pencil (d) an empty juice carton
11. 11.🔭 Who uses a periscope to look above the water? (a) a pilot in a plane (b) a farmer (c) a submarine crew (d) a baker
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) the same light (c) the object we look at (d) the angle of the mirrors
13. 13.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) plastic safety mirrors (c) loose glass panes (d) broken glass bits
14. 14.True or false: a pencil is not needed for the periscope. (a) True (b) False
15. 15.🔭 How many times does light bounce off a mirror in a simple periscope?
16. 16.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we change it (b) we keep it the same (c) we measure it
17. 17.🧺 Which of these is needed for the periscope? (a) a magnet (b) vinegar (c) turmeric powder (d) two small mirrors
18. 18.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is the one thing we change. (a) True (b) False
19. 19.True or false: two small mirrors is not needed for the periscope. (a) False (b) True
20. 20.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) the ground (c) taller walls (d) nothing at all
21. 21.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
22. 22.🔍 Which is the odd one out? (a) a dull brick (b) a shiny steel plate (c) still clear water (d) aluminium foil
23. 23.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is the one thing we change. (a) True (b) False
24. 24.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
25. 25.🔭 How many mirrors does a simple periscope use?
26. 26.🧺 Do we need sticky tape for the periscope? (a) needed (b) not needed
27. 27.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
28. 28.🧺 Which of these is not needed for the periscope? (a) a balloon (b) two small mirrors (c) an empty juice carton (d) a pencil
29. 29.🔭 What does a periscope let you do? (a) see germs (b) hear far sounds (c) see in the dark (d) see over a wall
30. 30.🔭 Which of these reflects light poorly? (a) a rough wooden board (b) a shiny steel plate (c) still clear water (d) aluminium foil
31. 31.🔭 Which of these reflects light well? (a) black cloth (b) dark soil (c) a dull brick (d) a shiny steel plate
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) False (b) True
33. 33.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) how clear the view is (b) the angle of the mirrors (c) the object we look at (d) the same carton
34. 34.⚖️ 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
35. 35.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) sticky tape (c) a ruler (d) a battery cell
36. 36.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
37. 37.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is what we measure. (a) False (b) True
38. 38.True or false: aluminium foil reflects light poorly. (a) False (b) True
39. 39.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a pencil (c) a battery cell (d) sticky tape
40. 40.⚖️ 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

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