Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 282 · 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 dark soil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
2. 2.True or false: still clear water reflects light well. (a) False (b) True
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 mirrors (c) the same light (d) the angle of the mirrors
4. 4.⚖️ 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
5. 5.🧺 Which of these is not needed for the periscope? (a) a balloon (b) two small mirrors (c) a pencil (d) sticky tape
6. 6.⚖️ 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) the same mirrors (d) how clear the view is
7. 7.🧺 Which of these is needed for the periscope? (a) a battery cell (b) a magnet (c) a balloon (d) two small mirrors
8. 8.🔭 How many mirrors does a simple periscope use?
9. 9.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
10. 10.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) an empty juice carton (c) two small mirrors (d) vinegar
11. 11.⚖️ 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
12. 12.🛟 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
13. 13.🔭 What does a periscope let you do? (a) see over a wall (b) see germs (c) see in the dark (d) hear far sounds
14. 14.True or false: a battery cell is needed for the periscope. (a) False (b) True
15. 15.🔭 Which of these reflects light well? (a) aluminium foil (b) black cloth (c) a dull brick (d) dark soil
16. 16.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
17. 17.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 90 degrees (c) 180 degrees (d) 45 degrees
18. 18.🔭 Who uses a periscope to look above the water? (a) a farmer (b) a submarine crew (c) a baker (d) a pilot in a plane
19. 19.⚖️ 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
20. 20.🛟 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
21. 21.🔭 Which of these reflects light well? (a) black cloth (b) a dull brick (c) a rough wooden board (d) a shiny steel plate
22. 22.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) a ruler (c) a magnet (d) a balloon
23. 23.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) a friend’s toy (c) the Sun (d) a tree
24. 24.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a magnet (b) a pencil (c) two small mirrors (d) an empty juice carton
25. 25.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) sticky tape (c) two small mirrors (d) yeast
26. 26.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) in colour (c) flipped left to right (d) upside down only
27. 27.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is what we measure. (a) True (b) False
28. 28.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
29. 29.⚖️ 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
30. 30.⚖️ 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 measure it (b) we keep it the same (c) we change it
31. 31.🔭 Which of these reflects light well? (a) black cloth (b) a mirror (c) a rough wooden board (d) dark soil
32. 32.🧺 Do we need a pencil for the periscope? (a) not needed (b) needed
33. 33.True or false: aluminium foil reflects light well. (a) True (b) False
34. 34.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) sticky tape (c) a pencil (d) a balloon
35. 35.True or false: a rough wooden board reflects light poorly. (a) True (b) False
36. 36.True or false: a dull brick reflects light poorly. (a) True (b) False
37. 37.🔍 Which is the odd one out? (a) aluminium foil (b) a rough wooden board (c) a shiny steel plate (d) a mirror
38. 38.🔮 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
39. 39.🧺 Which of these is needed for the periscope? (a) vinegar (b) a pencil (c) a balloon (d) yeast
40. 40.True or false: sticky tape is not needed for the periscope. (a) True (b) False

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