Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 221 · 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 is the odd one out? (a) a mirror (b) a shiny steel plate (c) dark soil (d) still clear water
2. 2.🔭 How many times does light bounce off a mirror in a simple periscope?
3. 3.🔭 Which of these reflects light poorly? (a) still clear water (b) a mirror (c) a shiny steel plate (d) black cloth
4. 4.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) a tree (c) a wall (d) the Sun
5. 5.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
6. 6.🛟 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
7. 7.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) a balloon (c) a pencil (d) an empty juice carton
8. 8.True or false: a mirror reflects light well. (a) True (b) False
9. 9.🧺 Which of these is needed for the periscope? (a) a battery cell (b) vinegar (c) yeast (d) a pencil
10. 10.🔭 Does dark soil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
11. 11.True or false: a shiny steel plate reflects light poorly. (a) True (b) False
12. 12.🧺 Do we need yeast for the periscope? (a) not needed (b) needed
13. 13.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
14. 14.True or false: a magnet is needed for the periscope. (a) True (b) False
15. 15.🛟 Who should cut the holes in the juice carton? (a) a grown-up (b) a friend who is running (c) nobody needs to (d) the youngest child
16. 16.True or false: a balloon is not needed for the periscope. (a) False (b) True
17. 17.True or false: vinegar is needed for the periscope. (a) True (b) False
18. 18.⚖️ 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
19. 19.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same mirrors (b) how clear the view is (c) the object we look at (d) the same carton
20. 20.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
21. 21.🔭 Who uses a periscope to look above the water? (a) a baker (b) a submarine crew (c) a pilot in a plane (d) a farmer
22. 22.🔍 Which is the odd one out? (a) a mirror (b) a dull brick (c) a shiny steel plate (d) still clear water
23. 23.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 90 degrees (c) 45 degrees (d) 180 degrees
24. 24.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) sticky tape (c) a battery cell (d) a pencil
25. 25.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
26. 26.⚖️ 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
27. 27.🧺 Which of these is not needed for the periscope? (a) a magnet (b) sticky tape (c) two small mirrors (d) a ruler
28. 28.⚖️ 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
29. 29.🔭 What does a periscope let you do? (a) hear far sounds (b) see over a wall (c) see in the dark (d) see germs
30. 30.True or false: turmeric powder is needed for the periscope. (a) True (b) False
31. 31.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
32. 32.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) vinegar (b) a ruler (c) two small mirrors (d) a pencil
33. 33.🧺 Which of these is needed for the periscope? (a) a magnet (b) turmeric powder (c) an empty juice carton (d) vinegar
34. 34.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) two small mirrors (c) yeast (d) sticky tape
35. 35.True or false: an empty juice carton is needed for the periscope. (a) True (b) False
36. 36.🔭 How many mirrors does a simple periscope use?
37. 37.🔭 Which of these reflects light well? (a) a dull brick (b) black cloth (c) dark soil (d) a shiny steel plate
38. 38.True or false: a pencil is not needed for the periscope. (a) False (b) True
39. 39.⚖️ 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 keep it the same (b) we change it (c) we measure it
40. 40.🔮 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

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