Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 392 · 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.📘 Light bouncing off a mirror is called ___. (a) refraction (b) evaporation (c) magnetism (d) reflection
2. 2.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
3. 3.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) a friend who is running (c) nobody needs to (d) a grown-up
4. 4.🔭 How many mirrors does a simple periscope use?
5. 5.True or false: a balloon is not needed for the periscope. (a) True (b) False
6. 6.⚖️ 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
7. 7.🔭 How many times does light bounce off a mirror in a simple periscope?
8. 8.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 45 degrees (c) 10 degrees (d) 180 degrees
9. 9.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) a battery cell (c) sticky tape (d) a magnet
10. 10.True or false: an empty juice carton is not needed for the periscope. (a) False (b) True
11. 11.🔭 Which of these reflects light well? (a) dark soil (b) aluminium foil (c) a dull brick (d) black cloth
12. 12.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) yeast (c) a pencil (d) an empty juice carton
13. 13.🧺 Do we need a battery cell for the periscope? (a) not needed (b) needed
14. 14.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) turmeric powder (b) a ruler (c) a pencil (d) two small mirrors
15. 15.⚖️ 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 light (c) how clear the view is (d) the same mirrors
16. 16.True or false: black cloth reflects light well. (a) True (b) False
17. 17.True or false: a battery cell is needed for the periscope. (a) True (b) False
18. 18.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
19. 19.🔭 Who uses a periscope to look above the water? (a) a baker (b) a farmer (c) a pilot in a plane (d) a submarine crew
20. 20.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) the ground (b) only short walls (c) taller walls (d) nothing at all
21. 21.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) sticky tape (c) two small mirrors (d) a magnet
22. 22.🔭 Which of these reflects light poorly? (a) still clear water (b) a shiny steel plate (c) aluminium foil (d) a rough wooden board
23. 23.🛟 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
24. 24.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
25. 25.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) a brighter view (c) a rainbow (d) only darkness
26. 26.True or false: a ruler is not needed for the periscope. (a) False (b) True
27. 27.🔍 Which is the odd one out? (a) still clear water (b) a shiny steel plate (c) a mirror (d) black cloth
28. 28.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the angle of the mirrors (b) the object we look at (c) the same light (d) how clear the view is
29. 29.🔭 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
30. 30.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we measure it (b) we keep it the same (c) we change it
31. 31.🔍 Which is the odd one out? (a) dark soil (b) black cloth (c) a mirror (d) a dull brick
32. 32.🔍 Which is the odd one out? (a) aluminium foil (b) a shiny steel plate (c) dark soil (d) still clear water
33. 33.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
34. 34.🔍 Which is the odd one out? (a) a dull brick (b) dark soil (c) a shiny steel plate (d) a rough wooden board
35. 35.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is the one thing we change. (a) False (b) True
36. 36.🧺 Which of these is needed for the periscope? (a) vinegar (b) a balloon (c) a pencil (d) a magnet
37. 37.🔭 Which of these reflects light poorly? (a) a mirror (b) still clear water (c) dark soil (d) aluminium foil
38. 38.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
39. 39.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
40. 40.⚖️ 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 measure it (c) we change it

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