Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 200 · 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.True or false: yeast is needed for the periscope. (a) True (b) False
2. 2.🧺 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) turmeric powder
3. 3.🧺 Which of these is not needed for the periscope? (a) a magnet (b) sticky tape (c) an empty juice carton (d) a pencil
4. 4.True or false: black cloth reflects light well. (a) True (b) False
5. 5.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well
6. 6.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is what we measure. (a) True (b) False
7. 7.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) a rainbow (c) a brighter view (d) only darkness
8. 8.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) in colour (c) flipped left to right (d) much bigger
9. 9.🔭 How many mirrors does a simple periscope use?
10. 10.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) a ruler (c) an empty juice carton (d) a balloon
11. 11.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
12. 12.🔭 How many times does light bounce off a mirror in a simple periscope?
13. 13.🧺 Which of these is needed for the periscope? (a) a balloon (b) vinegar (c) turmeric powder (d) sticky tape
14. 14.🧺 Which of these is not needed for the periscope? (a) a ruler (b) a pencil (c) yeast (d) two small mirrors
15. 15.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
16. 16.🧺 Which of these is needed for the periscope? (a) yeast (b) turmeric powder (c) a magnet (d) an empty juice carton
17. 17.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) an empty juice carton (c) sticky tape (d) vinegar
18. 18.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) how clear the view is (b) the angle of the mirrors (c) the same carton
19. 19.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
20. 20.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is kept the same. (a) True (b) False
21. 21.⚖️ 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
22. 22.🔭 Which of these reflects light well? (a) a mirror (b) black cloth (c) a dull brick (d) a rough wooden board
23. 23.True or false: sticky tape is needed for the periscope. (a) False (b) True
24. 24.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) sticky tape (c) two small mirrors (d) a magnet
25. 25.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) still clear water (c) black cloth (d) aluminium foil
26. 26.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is kept the same. (a) False (b) True
27. 27.🛟 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
28. 28.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
29. 29.True or false: a balloon is needed for the periscope. (a) True (b) False
30. 30.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a ruler (c) yeast (d) sticky tape
31. 31.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
32. 32.⚖️ 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 same mirrors (c) the object we look at (d) the angle of the mirrors
33. 33.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is kept the same. (a) True (b) False
34. 34.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the object we look at (b) the same mirrors (c) how clear the view is (d) the same light
35. 35.🛟 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
36. 36.True or false: sticky tape is not needed for the periscope. (a) True (b) False
37. 37.🔭 Who uses a periscope to look above the water? (a) a pilot in a plane (b) a farmer (c) a baker (d) a submarine crew
38. 38.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a wall (c) the Sun (d) a friend’s toy
39. 39.⚖️ 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 mirrors
40. 40.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) a pencil (c) turmeric powder (d) an empty juice carton

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