Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 597 · 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? True or false: how clear the view is is what we measure. (a) True (b) False
2. 2.True or false: dark soil reflects light poorly. (a) False (b) True
3. 3.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
4. 4.True or false: a mirror reflects light well. (a) True (b) False
5. 5.🔍 Which is the odd one out? (a) aluminium foil (b) a mirror (c) a shiny steel plate (d) black cloth
6. 6.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) sticky tape (c) a ruler (d) turmeric powder
7. 7.🛟 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
8. 8.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) the ground (b) nothing at all (c) taller walls (d) only short walls
9. 9.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) only darkness (c) two pictures (d) a brighter view
10. 10.⚖️ 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 keep it the same (b) we change it (c) we measure it
11. 11.🧺 Do we need a battery cell for the periscope? (a) not needed (b) needed
12. 12.🔭 Which of these reflects light well? (a) a rough wooden board (b) dark soil (c) black cloth (d) aluminium foil
13. 13.True or false: a shiny steel plate reflects light poorly. (a) True (b) False
14. 14.🧺 Which of these is not needed for the periscope? (a) a pencil (b) sticky tape (c) a magnet (d) two small mirrors
15. 15.True or false: sticky tape is not needed for the periscope. (a) False (b) True
16. 16.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
17. 17.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) a balloon (c) two small mirrors (d) sticky tape
18. 18.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
19. 19.🔭 Why must the two mirrors face each other and be parallel? (a) to make it heavy (b) so light reaches the eye (c) so it looks shiny (d) so it can float
20. 20.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 10 degrees (c) 45 degrees (d) 180 degrees
21. 21.True or false: a pencil is not needed for the periscope. (a) True (b) False
22. 22.⚖️ 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
23. 23.True or false: a magnet 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) two small mirrors (b) turmeric powder (c) a ruler (d) a pencil
25. 25.⚖️ 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 light (c) the angle of the mirrors (d) the same carton
26. 26.⚖️ 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 angle of the mirrors (d) the same light
27. 27.🔭 How many times does light bounce off a mirror in a simple periscope?
28. 28.🛟 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
29. 29.📘 Light bouncing off a mirror is called ___. (a) evaporation (b) reflection (c) refraction (d) magnetism
30. 30.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
31. 31.🔭 Who uses a periscope to look above the water? (a) a submarine crew (b) a farmer (c) a baker (d) a pilot in a plane
32. 32.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is what we measure. (a) True (b) False
33. 33.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is kept the same. (a) True (b) False
34. 34.True or false: a shiny steel plate reflects light well. (a) True (b) False
35. 35.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
36. 36.🔭 Which of these reflects light well? (a) dark soil (b) black cloth (c) a shiny steel plate (d) a rough wooden board
37. 37.⚖️ 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 object we look at
38. 38.True or false: dark soil reflects light well. (a) True (b) False
39. 39.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) a battery cell (c) a pencil (d) an empty juice carton
40. 40.🧺 Which of these is needed for the periscope? (a) a magnet (b) vinegar (c) an empty juice carton (d) a balloon

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