Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 315 · 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) magnetism (b) refraction (c) reflection (d) evaporation
2. 2.🔭 Which of these reflects light well? (a) dark soil (b) a dull brick (c) aluminium foil (d) black cloth
3. 3.🧺 Which of these is needed for the periscope? (a) a balloon (b) yeast (c) vinegar (d) a ruler
4. 4.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
5. 5.🧺 Which of these is not needed for the periscope? (a) a pencil (b) two small mirrors (c) a magnet (d) an empty juice carton
6. 6.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
7. 7.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) a tree (c) a wall (d) the Sun
8. 8.⚖️ 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 change it (c) we keep it the same
9. 9.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
10. 10.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
11. 11.🔭 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
12. 12.True or false: a dull brick reflects light poorly. (a) True (b) False
13. 13.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the object we look at (b) the same mirrors (c) how clear the view is (d) the angle of the mirrors
14. 14.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) flipped left to right (b) in colour (c) much bigger (d) upside down only
15. 15.True or false: a shiny steel plate reflects light poorly. (a) True (b) False
16. 16.🔍 Which is the odd one out? (a) black cloth (b) a rough wooden board (c) dark soil (d) aluminium foil
17. 17.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) a grown-up (c) nobody needs to (d) the youngest child
18. 18.🔍 Which is the odd one out? (a) still clear water (b) a rough wooden board (c) black cloth (d) dark soil
19. 19.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) two pictures (c) only darkness (d) a brighter view
20. 20.🔭 How many mirrors does a simple periscope use?
21. 21.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a magnet (b) two small mirrors (c) an empty juice carton (d) sticky tape
22. 22.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
23. 23.True or false: sticky tape is not needed for the periscope. (a) True (b) False
24. 24.True or false: a rough wooden board reflects light well. (a) False (b) True
25. 25.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) a ruler (c) an empty juice carton (d) vinegar
26. 26.🔭 What does a periscope let you do? (a) see germs (b) see in the dark (c) hear far sounds (d) see over a wall
27. 27.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well
28. 28.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is the one thing we change. (a) True (b) False
29. 29.🧺 Do we need a battery cell for the periscope? (a) not needed (b) needed
30. 30.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we change it (b) we keep it the same (c) we measure it
31. 31.True or false: aluminium foil 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 kept the same? (a) the object we look at (b) how clear the view is (c) the angle of the mirrors
33. 33.🔭 How many times does light bounce off a mirror in a simple periscope?
34. 34.True or false: yeast is not needed for the periscope. (a) False (b) True
35. 35.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a battery cell (c) two small mirrors (d) an empty juice carton
36. 36.True or false: a shiny steel plate reflects light well. (a) False (b) True
37. 37.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
38. 38.True or false: an empty juice carton is not needed for the periscope. (a) True (b) False
39. 39.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
40. 40.True or false: turmeric powder is not needed for the periscope. (a) True (b) False

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