Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 902 · 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: two small mirrors is not needed for the periscope. (a) False (b) True
2. 2.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) a balloon (c) sticky tape (d) a ruler
3. 3.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) in colour (c) much bigger (d) flipped left to right
4. 4.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) two small mirrors (c) vinegar (d) a pencil
5. 5.True or false: a battery cell is not needed for the periscope. (a) True (b) False
6. 6.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) a brighter view (c) only darkness (d) a rainbow
7. 7.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is the one thing we change. (a) True (b) False
8. 8.🔭 How many mirrors does a simple periscope use?
9. 9.📘 Light bouncing off a mirror is called ___. (a) reflection (b) magnetism (c) evaporation (d) refraction
10. 10.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
11. 11.🔭 Which of these reflects light poorly? (a) still clear water (b) aluminium foil (c) a mirror (d) black cloth
12. 12.🔭 How many times does light bounce off a mirror in a simple periscope?
13. 13.⚖️ 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 change it (c) we keep it the same
14. 14.🧺 Which of these is not needed for the periscope? (a) turmeric powder (b) a pencil (c) two small mirrors (d) an empty juice carton
15. 15.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) a friend’s toy (c) the Sun (d) a tree
16. 16.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) a battery cell (c) an empty juice carton (d) two small mirrors
17. 17.True or false: an empty juice carton is needed for the periscope. (a) True (b) False
18. 18.True or false: black cloth reflects light well. (a) True (b) False
19. 19.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 45 degrees (c) 180 degrees (d) 10 degrees
20. 20.🛟 Who should cut the holes in the juice carton? (a) nobody needs to (b) a grown-up (c) a friend who is running (d) the youngest child
21. 21.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
22. 22.🔭 Does dark soil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
23. 23.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is kept the same. (a) False (b) True
24. 24.⚖️ 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
25. 25.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) plastic safety mirrors (c) broken glass bits (d) loose glass panes
26. 26.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
27. 27.True or false: dark soil reflects light poorly. (a) False (b) True
28. 28.🔍 Which is the odd one out? (a) a shiny steel plate (b) a rough wooden board (c) dark soil (d) black cloth
29. 29.⚖️ 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 angle of the mirrors (c) the object we look at (d) the same mirrors
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 keep it the same (b) we change it (c) we measure it
31. 31.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we change it (b) we measure it (c) we keep it the same
32. 32.🔭 Which of these reflects light well? (a) a rough wooden board (b) black cloth (c) a dull brick (d) a shiny steel plate
33. 33.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the same carton (b) the same mirrors (c) the angle of the mirrors (d) the object we look at
34. 34.🧺 Do we need a pencil for the periscope? (a) not needed (b) needed
35. 35.⚖️ 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 change it (b) we measure it (c) we keep it the same
36. 36.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) yeast (c) a pencil (d) two small mirrors
37. 37.🔍 Which is the odd one out? (a) aluminium foil (b) still clear water (c) a rough wooden board (d) a shiny steel plate
38. 38.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) a magnet (c) a balloon (d) a pencil
39. 39.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
40. 40.True or false: vinegar is not needed for the periscope. (a) True (b) False

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