Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 937 · 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 hold a written word up to a mirror. The letters look ___. (a) much bigger (b) upside down only (c) flipped left to right (d) in colour
2. 2.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) a battery cell (c) a ruler (d) an empty juice carton
3. 3.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) nobody needs to (c) a grown-up (d) a friend who is running
4. 4.True or false: vinegar is needed for the periscope. (a) True (b) False
5. 5.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is the one thing we change. (a) True (b) False
6. 6.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) a friend’s toy (c) the Sun (d) a tree
7. 7.True or false: a battery cell is not needed for the periscope. (a) False (b) True
8. 8.🔮 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
9. 9.🔭 How many times does light bounce off a mirror in a simple periscope?
10. 10.🔍 Which is the odd one out? (a) a dull brick (b) dark soil (c) a shiny steel plate (d) black cloth
11. 11.🔭 Which of these reflects light well? (a) dark soil (b) black cloth (c) a mirror (d) a dull brick
12. 12.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a ruler (c) turmeric powder (d) sticky tape
13. 13.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
14. 14.🔍 Which is the odd one out? (a) aluminium foil (b) dark soil (c) a rough wooden board (d) black cloth
15. 15.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) a brighter view (c) only darkness (d) two pictures
16. 16.⚖️ 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 keep it the same (b) we change it (c) we measure it
17. 17.⚖️ 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 measure it (c) we change it
18. 18.True or false: an empty juice carton is needed for the periscope. (a) False (b) True
19. 19.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) a magnet (c) sticky tape (d) two small mirrors
20. 20.🧺 Which of these is needed for the periscope? (a) a pencil (b) a balloon (c) yeast (d) a battery cell
21. 21.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the angle of the mirrors (b) how clear the view is (c) the same carton
22. 22.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a dull brick (c) a shiny steel plate (d) still clear water
23. 23.True or false: a shiny steel plate reflects light well. (a) True (b) False
24. 24.🔭 Which of these reflects light well? (a) a shiny steel plate (b) a dull brick (c) a rough wooden board (d) dark soil
25. 25.True or false: a battery cell is needed for the periscope. (a) True (b) False
26. 26.🔍 Which is the odd one out? (a) still clear water (b) a mirror (c) black cloth (d) a shiny steel plate
27. 27.🧺 Do we need a magnet for the periscope? (a) not needed (b) needed
28. 28.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
29. 29.True or false: black cloth reflects light well. (a) False (b) True
30. 30.🧺 Do we need a pencil for the periscope? (a) not needed (b) needed
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? What do we do with “the object we look at”? (a) we change it (b) we keep it the same (c) we measure it
33. 33.⚖️ 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
34. 34.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a shiny steel plate (c) still clear water (d) a rough wooden board
35. 35.⚖️ 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 keep it the same (b) we measure it (c) we change it
36. 36.🔭 Who uses a periscope to look above the water? (a) a submarine crew (b) a pilot in a plane (c) a farmer (d) a baker
37. 37.True or false: sticky tape is not needed for the periscope. (a) False (b) True
38. 38.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
39. 39.True or false: dark soil reflects light well. (a) True (b) False
40. 40.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed

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