Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 737 · 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: an empty juice carton is not needed for the periscope. (a) True (b) False
2. 2.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) sticky tape (c) a pencil (d) a magnet
3. 3.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) taller walls (c) nothing at all (d) the ground
4. 4.True or false: a shiny steel plate reflects light poorly. (a) True (b) False
5. 5.⚖️ 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
6. 6.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is the one thing we change. (a) True (b) False
7. 7.🔭 Does dark soil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
8. 8.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same light (b) how clear the view is (c) the angle of the mirrors (d) the object we look at
9. 9.True or false: a balloon is not needed for the periscope. (a) False (b) True
10. 10.🔭 Does a dull brick 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 pilot in a plane (b) a farmer (c) a baker (d) a submarine crew
12. 12.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a mirror (c) a rough wooden board (d) still clear water
13. 13.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) sticky tape (c) yeast (d) an empty juice carton
14. 14.🔭 How many times does light bounce off a mirror in a simple periscope?
15. 15.True or false: an empty juice carton is needed for the periscope. (a) True (b) False
16. 16.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) a rainbow (c) two pictures (d) only darkness
17. 17.🔭 What does a periscope let you do? (a) hear far sounds (b) see in the dark (c) see germs (d) see over a wall
18. 18.⚖️ 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 keep it the same (b) we measure it (c) we change it
19. 19.🛟 Which mirrors are safest for a children’s periscope? (a) plastic safety mirrors (b) loose glass panes (c) big wall mirrors (d) broken glass bits
20. 20.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
21. 21.True or false: a balloon is needed for the periscope. (a) True (b) False
22. 22.⚖️ 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 object we look at (c) the angle of the mirrors
23. 23.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we measure it (b) we keep it the same (c) we change it
24. 24.True or false: a ruler is needed for the periscope. (a) True (b) False
25. 25.True or false: yeast is not needed for the periscope. (a) False (b) True
26. 26.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a ruler (c) two small mirrors (d) a magnet
27. 27.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
28. 28.🔍 Which is the odd one out? (a) a mirror (b) a dull brick (c) still clear water (d) a shiny steel plate
29. 29.True or false: a magnet is needed for the periscope. (a) True (b) False
30. 30.True or false: yeast is needed for the periscope. (a) False (b) True
31. 31.🛟 You must never point a periscope or a mirror at ___. (a) the Sun (b) a tree (c) a wall (d) a friend’s toy
32. 32.⚖️ 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 light (c) the angle of the mirrors
33. 33.True or false: vinegar is not needed for the periscope. (a) True (b) False
34. 34.🔭 Which of these reflects light well? (a) a rough wooden board (b) black cloth (c) a dull brick (d) a mirror
35. 35.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is kept the same. (a) False (b) True
36. 36.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is what we measure. (a) False (b) True
37. 37.True or false: a dull brick reflects light well. (a) True (b) False
38. 38.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
39. 39.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
40. 40.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) a grown-up (c) the youngest child (d) nobody needs to

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