Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 871 · 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? What do we do with “the object we look at”? (a) we measure it (b) we change it (c) we keep it the same
2. 2.True or false: aluminium foil reflects light well. (a) False (b) True
3. 3.True or false: dark soil reflects light well. (a) False (b) True
4. 4.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is what we measure. (a) True (b) False
5. 5.🔭 Which of these reflects light well? (a) a dull brick (b) still clear water (c) black cloth (d) a rough wooden board
6. 6.⚖️ 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
7. 7.🛟 You must never point a periscope or a mirror at ___. (a) the Sun (b) a tree (c) a friend’s toy (d) a wall
8. 8.🔭 Which of these reflects light well? (a) dark soil (b) a rough wooden board (c) aluminium foil (d) a dull brick
9. 9.🔭 Which of these reflects light poorly? (a) dark soil (b) aluminium foil (c) a mirror (d) a shiny steel plate
10. 10.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) how clear the view is (b) the same mirrors (c) the same carton (d) the angle of the mirrors
11. 11.⚖️ 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
12. 12.True or false: sticky tape is needed for the periscope. (a) False (b) True
13. 13.🧺 Which of these is needed for the periscope? (a) an empty juice carton (b) a balloon (c) a magnet (d) a battery cell
14. 14.True or false: vinegar is not needed for the periscope. (a) False (b) True
15. 15.⚖️ 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 keep it the same (b) we change it (c) we measure it
16. 16.True or false: a dull brick reflects light well. (a) True (b) False
17. 17.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is the one thing we change. (a) False (b) True
18. 18.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) an empty juice carton (c) sticky tape (d) a magnet
19. 19.True or false: a pencil is needed for the periscope. (a) True (b) False
20. 20.🔭 Which of these reflects light well? (a) black cloth (b) a mirror (c) dark soil (d) a rough wooden board
21. 21.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) in colour (c) flipped left to right (d) much bigger
22. 22.True or false: a magnet is not needed for the periscope. (a) False (b) True
23. 23.🛟 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
24. 24.🧺 Do we need a battery cell for the periscope? (a) not needed (b) needed
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 object we look at (c) the angle of the mirrors
26. 26.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed
27. 27.⚖️ 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
28. 28.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
29. 29.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) nothing at all (b) only short walls (c) taller walls (d) the ground
30. 30.True or false: two small mirrors is not needed for the periscope. (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) how clear the view is (b) the angle of the mirrors (c) the same mirrors (d) the same light
32. 32.⚖️ 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
33. 33.⚖️ 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
34. 34.🔭 How many times does light bounce off a mirror in a simple periscope?
35. 35.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) a friend who is running (c) a grown-up (d) nobody needs to
36. 36.True or false: a rough wooden board reflects light poorly. (a) False (b) True
37. 37.🔍 Which is the odd one out? (a) a shiny steel plate (b) still clear water (c) aluminium foil (d) a rough wooden board
38. 38.🔭 Why must the two mirrors face each other and be parallel? (a) so it looks shiny (b) to make it heavy (c) so light reaches the eye (d) so it can float
39. 39.🧺 Do we need a pencil for the periscope? (a) not needed (b) needed
40. 40.🔍 Which is the odd one out? (a) a rough wooden board (b) dark soil (c) black cloth (d) aluminium foil

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