Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 514 · 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.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a pencil (c) sticky tape (d) turmeric powder
2. 2.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same light (b) how clear the view is (c) the angle of the mirrors
3. 3.🔭 Which of these reflects light well? (a) dark soil (b) a mirror (c) a rough wooden board (d) black cloth
4. 4.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) loose glass panes (c) plastic safety mirrors (d) broken glass bits
5. 5.🔭 Who uses a periscope to look above the water? (a) a submarine crew (b) a baker (c) a farmer (d) a pilot in a plane
6. 6.True or false: an empty juice carton is needed for the periscope. (a) True (b) False
7. 7.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) vinegar (b) a pencil (c) a ruler (d) sticky tape
8. 8.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is what we measure. (a) True (b) False
9. 9.🔭 Which of these reflects light poorly? (a) a mirror (b) still clear water (c) a shiny steel plate (d) black cloth
10. 10.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same carton (b) the angle of the mirrors (c) how clear the view is
11. 11.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is what we measure. (a) False (b) True
12. 12.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is the one thing we change. (a) True (b) False
13. 13.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
14. 14.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) taller walls (b) nothing at all (c) the ground (d) only short walls
15. 15.🔭 Which of these reflects light well? (a) aluminium foil (b) a rough wooden board (c) a dull brick (d) black cloth
16. 16.True or false: a shiny steel plate reflects light well. (a) False (b) True
17. 17.📘 Light bouncing off a mirror is called ___. (a) reflection (b) evaporation (c) magnetism (d) refraction
18. 18.True or false: a dull brick reflects light well. (a) True (b) False
19. 19.🔮 Predict: you cover the top mirror with paper. What do you see? (a) only darkness (b) a rainbow (c) two pictures (d) a brighter view
20. 20.🔍 Which is the odd one out? (a) a dull brick (b) aluminium foil (c) a mirror (d) a shiny steel plate
21. 21.True or false: a battery cell is not needed for the periscope. (a) True (b) False
22. 22.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) a ruler (c) two small mirrors (d) a magnet
23. 23.🔭 Does dark soil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
24. 24.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) in colour (b) much bigger (c) upside down only (d) flipped left to right
25. 25.🧺 Which of these is needed for the periscope? (a) a magnet (b) yeast (c) a battery cell (d) two small mirrors
26. 26.⚖️ 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 measure it (b) we change it (c) we keep it the same
27. 27.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) a wall (c) a tree (d) the Sun
28. 28.True or false: still clear water reflects light well. (a) True (b) False
29. 29.🔍 Which is the odd one out? (a) still clear water (b) a dull brick (c) a rough wooden board (d) dark soil
30. 30.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed
31. 31.True or false: a rough wooden board reflects light well. (a) False (b) True
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) how clear the view is (c) the same mirrors (d) the angle of the mirrors
33. 33.🧺 Do we need a battery cell for the periscope? (a) not needed (b) needed
34. 34.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
35. 35.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
36. 36.🔍 Which is the odd one out? (a) a shiny steel plate (b) a mirror (c) black cloth (d) aluminium foil
37. 37.True or false: a pencil is needed for the periscope. (a) False (b) True
38. 38.🔭 How many times does light bounce off a mirror in a simple periscope?
39. 39.⚖️ 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 change it (c) we keep it the same
40. 40.🔭 How many mirrors does a simple periscope use?

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