Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 287 · 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 of these is not needed for the periscope? (a) a ruler (b) a magnet (c) two small mirrors (d) sticky tape
2. 2.True or false: still clear water reflects light well. (a) False (b) True
3. 3.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a ruler (c) a pencil (d) a battery cell
4. 4.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
5. 5.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) a dull brick (c) a mirror (d) aluminium foil
6. 6.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
7. 7.⚖️ 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 light (b) how clear the view is (c) the angle of the mirrors (d) the same mirrors
8. 8.⚖️ 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) the object we look at (c) how clear the view is
9. 9.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) nothing at all (b) taller walls (c) only short walls (d) the ground
10. 10.🔍 Which is the odd one out? (a) still clear water (b) a shiny steel plate (c) a dull brick (d) aluminium foil
11. 11.⚖️ 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 change it (c) we keep it the same
12. 12.🔍 Which is the odd one out? (a) a mirror (b) dark soil (c) black cloth (d) a rough wooden board
13. 13.True or false: a rough wooden board reflects light well. (a) False (b) True
14. 14.🔮 Predict: you cover the top mirror with paper. What do you see? (a) only darkness (b) two pictures (c) a rainbow (d) a brighter view
15. 15.⚖️ 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 keep it the same (c) we change it
16. 16.⚖️ 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 measure it (c) we change it
17. 17.🔭 How many times does light bounce off a mirror in a simple periscope?
18. 18.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
19. 19.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
20. 20.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) an empty juice carton (c) a pencil (d) a magnet
21. 21.True or false: a balloon is not needed for the periscope. (a) False (b) True
22. 22.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 90 degrees (c) 180 degrees (d) 45 degrees
23. 23.True or false: sticky tape is needed for the periscope. (a) False (b) True
24. 24.True or false: a dull brick reflects light poorly. (a) False (b) True
25. 25.🧺 Which of these is needed for the periscope? (a) a magnet (b) a pencil (c) yeast (d) vinegar
26. 26.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) flipped left to right (c) upside down only (d) in colour
27. 27.True or false: a balloon is needed for the periscope. (a) True (b) False
28. 28.True or false: a rough wooden board reflects light poorly. (a) False (b) True
29. 29.🧺 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) a ruler
30. 30.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
31. 31.🔭 What does a periscope let you do? (a) see in the dark (b) see over a wall (c) hear far sounds (d) see germs
32. 32.🧺 Which of these is needed for the periscope? (a) a ruler (b) turmeric powder (c) a magnet (d) a battery cell
33. 33.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) vinegar (b) two small mirrors (c) a ruler (d) sticky tape
34. 34.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) how clear the view is (b) the same carton (c) the angle of the mirrors
35. 35.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) how clear the view is (b) the angle of the mirrors (c) the same mirrors
36. 36.🔭 Which of these reflects light well? (a) dark soil (b) a rough wooden board (c) a dull brick (d) a mirror
37. 37.🔭 Which of these reflects light poorly? (a) a mirror (b) a shiny steel plate (c) a rough wooden board (d) still clear water
38. 38.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) loose glass panes (c) big wall mirrors (d) plastic safety mirrors
39. 39.True or false: a ruler is needed for the periscope. (a) True (b) False
40. 40.True or false: vinegar is needed for the periscope. (a) True (b) False

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