Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 361 · 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.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) yeast (c) sticky tape (d) a ruler
2. 2.🔭 How many times does light bounce off a mirror in a simple periscope?
3. 3.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is kept the same. (a) False (b) True
4. 4.True or false: dark soil reflects light well. (a) True (b) False
5. 5.🔭 Who uses a periscope to look above the water? (a) a pilot in a plane (b) a submarine crew (c) a farmer (d) a baker
6. 6.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is kept the same. (a) True (b) False
7. 7.🧺 Which of these is needed for the periscope? (a) vinegar (b) yeast (c) sticky tape (d) a magnet
8. 8.🔍 Which is the odd one out? (a) a mirror (b) black cloth (c) a dull brick (d) dark soil
9. 9.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we change it (b) we measure it (c) we keep it the same
10. 10.True or false: two small mirrors is not needed for the periscope. (a) False (b) True
11. 11.True or false: turmeric powder is needed for the periscope. (a) True (b) False
12. 12.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
13. 13.🛟 You must never point a periscope or a mirror at ___. (a) the Sun (b) a tree (c) a friend’s toy (d) a wall
14. 14.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same carton (b) the angle of the mirrors (c) how clear the view is
15. 15.🔭 How many mirrors does a simple periscope use?
16. 16.⚖️ 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
17. 17.True or false: still clear water reflects light well. (a) True (b) False
18. 18.🔮 Predict: you cover the top mirror with paper. What do you see? (a) only darkness (b) a rainbow (c) two pictures (d) a brighter view
19. 19.True or false: a battery cell is not needed for the periscope. (a) False (b) True
20. 20.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) nobody needs to (c) a grown-up (d) the youngest child
21. 21.🔍 Which is the odd one out? (a) still clear water (b) a mirror (c) aluminium foil (d) a rough wooden board
22. 22.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we keep it the same (b) we measure it (c) we change it
23. 23.True or false: a dull brick reflects light poorly. (a) True (b) False
24. 24.🔍 Which is the odd one out? (a) dark soil (b) a shiny steel plate (c) a mirror (d) aluminium foil
25. 25.True or false: a shiny steel plate reflects light well. (a) True (b) False
26. 26.⚖️ 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 change it (b) we keep it the same (c) we measure it
27. 27.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) big wall mirrors (c) plastic safety mirrors (d) loose glass panes
28. 28.True or false: two small mirrors is needed for the periscope. (a) False (b) True
29. 29.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a balloon (c) a pencil (d) two small mirrors
30. 30.True or false: black cloth reflects light well. (a) False (b) True
31. 31.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same carton (b) the same mirrors (c) the object we look at (d) how clear the view is
32. 32.True or false: a pencil is needed for the periscope. (a) False (b) True
33. 33.True or false: still clear water reflects light poorly. (a) True (b) False
34. 34.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) flipped left to right (b) in colour (c) upside down only (d) much bigger
35. 35.🔭 Which of these reflects light poorly? (a) a mirror (b) a shiny steel plate (c) dark soil (d) still clear water
36. 36.⚖️ 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 light (c) the object we look at (d) how clear the view is
37. 37.🧺 Which of these is needed for the periscope? (a) a magnet (b) turmeric powder (c) a battery cell (d) a pencil
38. 38.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
39. 39.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a magnet (b) an empty juice carton (c) two small mirrors (d) a ruler
40. 40.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is what we measure. (a) True (b) False

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