Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 466 · 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.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is kept the same. (a) True (b) False
2. 2.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) two small mirrors (c) a ruler (d) a magnet
3. 3.🛟 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
4. 4.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) a pencil (c) an empty juice carton (d) a balloon
5. 5.🧺 Do we need vinegar for the periscope? (a) not needed (b) needed
6. 6.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same light (b) the angle of the mirrors (c) how clear the view is
7. 7.⚖️ 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
8. 8.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
9. 9.True or false: aluminium foil reflects light poorly. (a) True (b) False
10. 10.True or false: a dull brick reflects light well. (a) True (b) False
11. 11.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we change it (b) we measure it (c) we keep it the same
12. 12.True or false: aluminium foil reflects light well. (a) False (b) True
13. 13.🔍 Which is the odd one out? (a) a rough wooden board (b) black cloth (c) a shiny steel plate (d) dark soil
14. 14.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
15. 15.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) sticky tape (c) a magnet (d) a ruler
16. 16.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
17. 17.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
18. 18.🔮 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
19. 19.🧺 Do we need a balloon for the periscope? (a) not needed (b) needed
20. 20.🔭 What does a periscope let you do? (a) hear far sounds (b) see in the dark (c) see germs (d) see over a wall
21. 21.🔭 Which of these reflects light well? (a) a dull brick (b) dark soil (c) aluminium foil (d) black cloth
22. 22.🛟 You must never point a periscope or a mirror at ___. (a) the Sun (b) a tree (c) a friend’s toy (d) a wall
23. 23.⚖️ 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) how clear the view is (c) the angle of the mirrors (d) the same light
24. 24.⚖️ 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
25. 25.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 90 degrees (c) 45 degrees (d) 180 degrees
26. 26.🔍 Which is the odd one out? (a) dark soil (b) a dull brick (c) black cloth (d) still clear water
27. 27.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
28. 28.True or false: still clear water reflects light poorly. (a) True (b) False
29. 29.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is what we measure. (a) True (b) False
30. 30.🔭 How many mirrors does a simple periscope use?
31. 31.🔍 Which is the odd one out? (a) a shiny steel plate (b) still clear water (c) a mirror (d) a rough wooden board
32. 32.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) how clear the view is (b) the same mirrors (c) the angle of the mirrors (d) the same light
33. 33.True or false: a pencil is not needed for the periscope. (a) True (b) False
34. 34.🔭 How many times does light bounce off a mirror in a simple periscope?
35. 35.🧺 Do we need a pencil for the periscope? (a) not needed (b) needed
36. 36.🧺 Which of these is needed for the periscope? (a) yeast (b) a balloon (c) a magnet (d) sticky tape
37. 37.⚖️ 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
38. 38.True or false: dark soil reflects light well. (a) True (b) False
39. 39.🧺 Which of these is not needed for the periscope? (a) vinegar (b) a ruler (c) an empty juice carton (d) two small mirrors
40. 40.🔭 Who uses a periscope to look above the water? (a) a baker (b) a farmer (c) a pilot in a plane (d) a submarine crew

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