Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 192 · 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: a pencil is not needed for the periscope. (a) True (b) False
2. 2.⚖️ 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 light (c) the object we look at (d) the angle of the mirrors
3. 3.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is kept the same. (a) False (b) True
4. 4.🔮 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
5. 5.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) a tree (c) a friend’s toy (d) the Sun
6. 6.🔭 How many mirrors does a simple periscope use?
7. 7.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
8. 8.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 10 degrees (c) 180 degrees (d) 45 degrees
9. 9.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
10. 10.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) broken glass bits (c) plastic safety mirrors (d) big wall mirrors
11. 11.🔍 Which is the odd one out? (a) a dull brick (b) aluminium foil (c) black cloth (d) a rough wooden board
12. 12.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is what we measure. (a) True (b) False
13. 13.🔭 How many times does light bounce off a mirror in a simple periscope?
14. 14.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
15. 15.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) taller walls (b) the ground (c) nothing at all (d) only short walls
16. 16.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is kept the same. (a) False (b) True
17. 17.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) a friend who is running (c) nobody needs to (d) a grown-up
18. 18.⚖️ 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 carton
19. 19.🔍 Which is the odd one out? (a) a mirror (b) dark soil (c) a shiny steel plate (d) aluminium foil
20. 20.True or false: yeast is not needed for the periscope. (a) True (b) False
21. 21.🔭 Which of these reflects light poorly? (a) a mirror (b) aluminium foil (c) a shiny steel plate (d) dark soil
22. 22.True or false: a dull brick reflects light well. (a) False (b) True
23. 23.🔭 What does a periscope let you do? (a) see over a wall (b) see in the dark (c) see germs (d) hear far sounds
24. 24.🧺 Which of these is not needed for the periscope? (a) vinegar (b) a pencil (c) two small mirrors (d) an empty juice carton
25. 25.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) yeast (c) a ruler (d) a pencil
26. 26.⚖️ 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 same mirrors (c) how clear the view is
27. 27.True or false: a balloon is not needed for the periscope. (a) False (b) True
28. 28.True or false: a magnet is not needed for the periscope. (a) True (b) False
29. 29.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a magnet (c) an empty juice carton (d) a ruler
30. 30.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) an empty juice carton (c) a balloon (d) two small mirrors
31. 31.True or false: sticky tape is not needed for the periscope. (a) False (b) True
32. 32.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed
33. 33.⚖️ 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 change it (b) we keep it the same (c) we measure it
34. 34.🧺 Which of these is not needed for the periscope? (a) a ruler (b) a balloon (c) two small mirrors (d) an empty juice carton
35. 35.True or false: turmeric powder is not needed for the periscope. (a) False (b) True
36. 36.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a mirror (c) still clear water (d) black cloth
37. 37.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) turmeric powder (c) an empty juice carton (d) a pencil
38. 38.⚖️ 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
39. 39.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) two small mirrors (c) sticky tape (d) a battery cell
40. 40.True or false: a battery cell is not needed for the periscope. (a) True (b) False

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