Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 171 · 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) an empty juice carton (b) a ruler (c) two small mirrors (d) a balloon
2. 2.🔭 Which of these reflects light well? (a) a dull brick (b) aluminium foil (c) a rough wooden board (d) dark soil
3. 3.⚖️ 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 mirrors (b) the same carton (c) the angle of the mirrors (d) the same light
4. 4.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) plastic safety mirrors (c) big wall mirrors (d) broken glass bits
5. 5.True or false: a balloon is not needed for the periscope. (a) True (b) False
6. 6.True or false: dark soil reflects light well. (a) False (b) True
7. 7.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) in colour (b) upside down only (c) flipped left to right (d) much bigger
8. 8.True or false: a pencil is needed for the periscope. (a) False (b) True
9. 9.🔍 Which is the odd one out? (a) a mirror (b) still clear water (c) a shiny steel plate (d) black cloth
10. 10.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the angle of the mirrors (b) the object we look at (c) the same carton (d) how clear the view is
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 keep it the same (c) we change it
12. 12.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is the one thing we change. (a) True (b) False
13. 13.🔭 Which of these reflects light poorly? (a) a rough wooden board (b) a shiny steel plate (c) still clear water (d) aluminium foil
14. 14.⚖️ 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 object we look at
15. 15.🧺 Do we need yeast for the periscope? (a) not needed (b) needed
16. 16.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
17. 17.⚖️ 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 keep it the same (b) we measure it (c) we change it
18. 18.⚖️ 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) False (b) True
19. 19.🧺 Do we need a pencil for the periscope? (a) needed (b) not needed
20. 20.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed
21. 21.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) two pictures (c) only darkness (d) a rainbow
22. 22.🧺 Which of these is needed for the periscope? (a) an empty juice carton (b) yeast (c) turmeric powder (d) a magnet
23. 23.🔭 How many times does light bounce off a mirror in a simple periscope?
24. 24.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
25. 25.⚖️ 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 light
26. 26.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) taller walls (b) only short walls (c) nothing at all (d) the ground
27. 27.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) two small mirrors (c) a pencil (d) vinegar
28. 28.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) vinegar (c) a magnet (d) a pencil
29. 29.🔍 Which is the odd one out? (a) a shiny steel plate (b) aluminium foil (c) still clear water (d) a rough wooden board
30. 30.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we measure it (b) we keep it the same (c) we change it
31. 31.🧺 Which of these is needed for the periscope? (a) a magnet (b) yeast (c) a balloon (d) two small mirrors
32. 32.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a balloon (c) a ruler (d) two small mirrors
33. 33.🔍 Which is the odd one out? (a) a mirror (b) a dull brick (c) dark soil (d) a rough wooden board
34. 34.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) the Sun (c) a friend’s toy (d) a tree
35. 35.True or false: two small mirrors is needed for the periscope. (a) False (b) True
36. 36.True or false: vinegar is not needed for the periscope. (a) True (b) False
37. 37.🔭 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
38. 38.True or false: aluminium foil reflects light poorly. (a) True (b) False
39. 39.🔭 Which of these reflects light well? (a) a dull brick (b) dark soil (c) a rough wooden board (d) a mirror
40. 40.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well

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