Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 965 · 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.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we measure it (b) we change it (c) we keep it the same
2. 2.True or false: a battery cell is needed for the periscope. (a) True (b) False
3. 3.🔭 What does a periscope let you do? (a) see in the dark (b) hear far sounds (c) see germs (d) see over a wall
4. 4.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
5. 5.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
6. 6.🔍 Which is the odd one out? (a) a mirror (b) aluminium foil (c) a dull brick (d) still clear water
7. 7.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) nobody needs to (c) a friend who is running (d) a grown-up
8. 8.⚖️ 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
9. 9.True or false: a battery cell is not needed for the periscope. (a) True (b) False
10. 10.🔭 Which of these reflects light well? (a) a rough wooden board (b) dark soil (c) aluminium foil (d) black cloth
11. 11.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) how clear the view is (b) the same mirrors (c) the same carton (d) the angle of the mirrors
12. 12.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) in colour (b) flipped left to right (c) much bigger (d) upside down only
13. 13.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
14. 14.🛟 Which mirrors are safest for a children’s periscope? (a) plastic safety mirrors (b) loose glass panes (c) big wall mirrors (d) broken glass bits
15. 15.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “how clear the view is”? (a) we change it (b) we keep it the same (c) we measure it
16. 16.🔭 Who uses a periscope to look above the water? (a) a baker (b) a pilot in a plane (c) a submarine crew (d) a farmer
17. 17.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) the Sun (c) a friend’s toy (d) a tree
18. 18.🔍 Which is the odd one out? (a) a dull brick (b) a shiny steel plate (c) a rough wooden board (d) black cloth
19. 19.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same mirrors (b) how clear the view is (c) the angle of the mirrors
20. 20.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we change it (b) we keep it the same (c) we measure it
21. 21.True or false: dark soil reflects light poorly. (a) False (b) True
22. 22.🔭 Which of these reflects light poorly? (a) dark soil (b) still clear water (c) a shiny steel plate (d) aluminium foil
23. 23.🔍 Which is the odd one out? (a) black cloth (b) dark soil (c) a mirror (d) a rough wooden board
24. 24.True or false: a mirror reflects light poorly. (a) True (b) False
25. 25.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the object we look at (b) the angle of the mirrors (c) how clear the view is
26. 26.🔮 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
27. 27.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) a ruler (c) a battery cell (d) an empty juice carton
28. 28.⚖️ 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 same mirrors (c) the same light (d) the same carton
29. 29.True or false: an empty juice carton is not needed for the periscope. (a) False (b) True
30. 30.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) nothing at all (b) only short walls (c) taller walls (d) the ground
31. 31.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) a balloon (c) an empty juice carton (d) sticky tape
32. 32.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) yeast (b) sticky tape (c) two small mirrors (d) an empty juice carton
33. 33.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) vinegar (c) a ruler (d) two small mirrors
34. 34.🔍 Which is the odd one out? (a) a rough wooden board (b) a dull brick (c) black cloth (d) still clear water
35. 35.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) a pencil (c) sticky tape (d) a balloon
36. 36.🧺 Which of these is not needed for the periscope? (a) a pencil (b) a ruler (c) turmeric powder (d) sticky tape
37. 37.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
38. 38.True or false: a pencil is not needed for the periscope. (a) True (b) False
39. 39.⚖️ 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) False (b) True
40. 40.True or false: an empty juice carton is needed for the periscope. (a) False (b) True

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