Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 943 · 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: still clear water reflects light well. (a) False (b) True
2. 2.🧺 Do we need a magnet for the periscope? (a) not needed (b) needed
3. 3.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
4. 4.🔍 Which is the odd one out? (a) a mirror (b) aluminium foil (c) a shiny steel plate (d) dark soil
5. 5.🛟 Who should cut the holes in the juice carton? (a) a grown-up (b) a friend who is running (c) the youngest child (d) nobody needs to
6. 6.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) the Sun (c) a friend’s toy (d) a wall
7. 7.🔭 How many mirrors does a simple periscope use?
8. 8.True or false: a pencil is not needed for the periscope. (a) True (b) False
9. 9.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
10. 10.⚖️ 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 carton (c) how clear the view is
11. 11.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is the one thing we change. (a) False (b) True
12. 12.⚖️ 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
13. 13.⚖️ 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 same carton (c) the object we look at (d) how clear the view is
14. 14.🔭 How many times does light bounce off a mirror in a simple periscope?
15. 15.🔭 Who uses a periscope to look above the water? (a) a farmer (b) a pilot in a plane (c) a submarine crew (d) a baker
16. 16.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we keep it the same (b) we measure it (c) we change it
17. 17.True or false: a magnet is not needed for the periscope. (a) True (b) False
18. 18.🔭 Which of these reflects light well? (a) a rough wooden board (b) black cloth (c) a shiny steel plate (d) dark soil
19. 19.🧺 Which of these is needed for the periscope? (a) a magnet (b) a ruler (c) a balloon (d) a battery cell
20. 20.🧺 Do we need sticky tape for the periscope? (a) needed (b) not needed
21. 21.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) turmeric powder (c) sticky tape (d) a pencil
22. 22.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) sticky tape (c) yeast (d) a ruler
23. 23.⚖️ 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
24. 24.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
25. 25.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
26. 26.True or false: two small mirrors is not needed for the periscope. (a) True (b) False
27. 27.True or false: dark soil reflects light well. (a) False (b) True
28. 28.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) two small mirrors (c) a balloon (d) sticky tape
29. 29.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) an empty juice carton (c) sticky tape (d) vinegar
30. 30.🛟 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
31. 31.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the angle of the mirrors (b) the same mirrors (c) the object we look at (d) the same carton
32. 32.True or false: still clear water reflects light poorly. (a) True (b) False
33. 33.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
34. 34.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
35. 35.True or false: a balloon is needed for the periscope. (a) True (b) False
36. 36.🧺 Which of these is needed for the periscope? (a) a battery cell (b) an empty juice carton (c) a balloon (d) vinegar
37. 37.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) in colour (c) much bigger (d) flipped left to right
38. 38.⚖️ 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 measure it (c) we keep it the same
39. 39.🔭 At what angle are the mirrors set in a simple periscope? (a) 180 degrees (b) 45 degrees (c) 10 degrees (d) 90 degrees
40. 40.🔍 Which is the odd one out? (a) black cloth (b) dark soil (c) a dull brick (d) a shiny steel plate

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