Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 566 · 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 is the odd one out? (a) dark soil (b) black cloth (c) a rough wooden board (d) still clear water
2. 2.🔭 How many times does light bounce off a mirror in a simple periscope?
3. 3.True or false: dark soil reflects light poorly. (a) False (b) True
4. 4.🔮 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
5. 5.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
6. 6.🔭 How many mirrors does a simple periscope use?
7. 7.⚖️ 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) False (b) True
8. 8.⚖️ 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) False (b) True
9. 9.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is the one thing we change. (a) False (b) True
10. 10.True or false: a shiny steel plate reflects light well. (a) False (b) True
11. 11.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
12. 12.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
13. 13.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) big wall mirrors (c) loose glass panes (d) plastic safety mirrors
14. 14.🔍 Which is the odd one out? (a) black cloth (b) dark soil (c) a shiny steel plate (d) a dull brick
15. 15.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) two small mirrors (c) yeast (d) an empty juice carton
16. 16.⚖️ 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
17. 17.🧺 Which of these is not needed for the periscope? (a) a ruler (b) an empty juice carton (c) turmeric powder (d) two small mirrors
18. 18.⚖️ 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
19. 19.⚖️ 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) False (b) True
20. 20.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 45 degrees (c) 180 degrees (d) 90 degrees
21. 21.⚖️ 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 measure it (b) we change it (c) we keep it the same
22. 22.🔍 Which is the odd one out? (a) aluminium foil (b) a mirror (c) a shiny steel plate (d) a dull brick
23. 23.True or false: turmeric powder is not needed for the periscope. (a) True (b) False
24. 24.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
25. 25.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a magnet (c) a ruler (d) a pencil
26. 26.🧺 Which of these is not needed for the periscope? (a) a battery cell (b) sticky tape (c) two small mirrors (d) an empty juice carton
27. 27.True or false: a magnet is needed for the periscope. (a) True (b) False
28. 28.True or false: yeast is not needed for the periscope. (a) True (b) False
29. 29.🧺 Which of these is needed for the periscope? (a) a pencil (b) a balloon (c) vinegar (d) a magnet
30. 30.📘 Light bouncing off a mirror is called ___. (a) evaporation (b) refraction (c) magnetism (d) reflection
31. 31.True or false: sticky tape is needed for the periscope. (a) True (b) False
32. 32.🔭 Which of these reflects light well? (a) a dull brick (b) a mirror (c) black cloth (d) a rough wooden board
33. 33.🔭 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
34. 34.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) two small mirrors (c) turmeric powder (d) sticky tape
35. 35.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) a pencil (c) a battery cell (d) an empty juice carton
36. 36.🧺 Which of these is needed for the periscope? (a) a ruler (b) yeast (c) vinegar (d) turmeric powder
37. 37.🔮 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
38. 38.True or false: a battery cell is needed for the periscope. (a) True (b) False
39. 39.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
40. 40.True or false: a dull brick reflects light poorly. (a) False (b) True

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