Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 444 · 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: still clear water reflects light poorly. (a) True (b) False
2. 2.🔭 How many mirrors does a simple periscope use?
3. 3.🔭 How many times does light bounce off a mirror in a simple periscope?
4. 4.True or false: a rough wooden board reflects light well. (a) True (b) False
5. 5.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we measure it (b) we keep it the same (c) we change it
6. 6.⚖️ 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 angle of the mirrors (c) the object we look at (d) the same mirrors
7. 7.📘 Light bouncing off a mirror is called ___. (a) refraction (b) magnetism (c) evaporation (d) reflection
8. 8.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
9. 9.🧺 Do we need a pencil for the periscope? (a) needed (b) not needed
10. 10.🔍 Which is the odd one out? (a) a shiny steel plate (b) a mirror (c) aluminium foil (d) black cloth
11. 11.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) a ruler (c) a balloon (d) a magnet
12. 12.⚖️ 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 keep it the same (c) we change it
13. 13.🔮 Predict: you cover the top mirror with paper. What do you see? (a) only darkness (b) a brighter view (c) a rainbow (d) two pictures
14. 14.🔍 Which is the odd one out? (a) black cloth (b) a dull brick (c) a shiny steel plate (d) dark soil
15. 15.🔭 Which of these reflects light well? (a) a dull brick (b) a rough wooden board (c) dark soil (d) a shiny steel plate
16. 16.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
17. 17.🔭 Which of these reflects light well? (a) a rough wooden board (b) black cloth (c) a dull brick (d) still clear water
18. 18.🔭 Why must the two mirrors face each other and be parallel? (a) so light reaches the eye (b) so it looks shiny (c) to make it heavy (d) so it can float
19. 19.🔭 What does a periscope let you do? (a) see in the dark (b) hear far sounds (c) see over a wall (d) see germs
20. 20.True or false: a mirror reflects light poorly. (a) True (b) False
21. 21.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
22. 22.🔍 Which is the odd one out? (a) still clear water (b) a dull brick (c) dark soil (d) a rough wooden board
23. 23.True or false: black cloth reflects light poorly. (a) True (b) False
24. 24.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a ruler (c) a magnet (d) two small mirrors
25. 25.True or false: still clear water reflects light well. (a) True (b) False
26. 26.🧺 Which of these is not needed for the periscope? (a) turmeric powder (b) a pencil (c) an empty juice carton (d) sticky tape
27. 27.🧺 Do we need sticky tape for the periscope? (a) needed (b) not needed
28. 28.True or false: a mirror reflects light well. (a) False (b) True
29. 29.⚖️ 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
30. 30.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
31. 31.🔭 Who uses a periscope to look above the water? (a) a submarine crew (b) a baker (c) a pilot in a plane (d) a farmer
32. 32.True or false: a shiny steel plate reflects light well. (a) True (b) False
33. 33.True or false: a balloon is needed for the periscope. (a) False (b) True
34. 34.True or false: a pencil is needed for the periscope. (a) True (b) False
35. 35.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) the ground (b) only short walls (c) nothing at all (d) taller walls
36. 36.True or false: a dull brick reflects light well. (a) True (b) False
37. 37.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
38. 38.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
39. 39.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
40. 40.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed

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