Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 401 · 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.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) a rainbow (c) only darkness (d) two pictures
2. 2.True or false: yeast is not needed for the periscope. (a) False (b) True
3. 3.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) big wall mirrors (c) loose glass panes (d) plastic safety mirrors
4. 4.⚖️ 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 keep it the same (c) we measure it
5. 5.🔭 Which of these reflects light poorly? (a) still clear water (b) a rough wooden board (c) aluminium foil (d) a shiny steel plate
6. 6.🧺 Which of these is needed for the periscope? (a) an empty juice carton (b) a balloon (c) vinegar (d) a magnet
7. 7.🔭 Why must the two mirrors face each other and be parallel? (a) so light reaches the eye (b) so it looks shiny (c) to make it heavy (d) so it can float
8. 8.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) the youngest child (c) nobody needs to (d) a grown-up
9. 9.⚖️ 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 keep it the same (c) we change it
10. 10.🔍 Which is the odd one out? (a) a rough wooden board (b) dark soil (c) still clear water (d) black cloth
11. 11.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
12. 12.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) much bigger (c) in colour (d) flipped left to right
13. 13.🧺 Which of these is not needed for the periscope? (a) a ruler (b) sticky tape (c) an empty juice carton (d) vinegar
14. 14.True or false: a magnet is needed for the periscope. (a) False (b) True
15. 15.True or false: dark soil reflects light well. (a) True (b) False
16. 16.⚖️ 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
17. 17.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) a tree (c) the Sun (d) a friend’s toy
18. 18.True or false: sticky tape is not needed for the periscope. (a) False (b) True
19. 19.🧺 Which of these is needed for the periscope? (a) a battery cell (b) yeast (c) two small mirrors (d) a magnet
20. 20.🔍 Which is the odd one out? (a) a dull brick (b) aluminium foil (c) a rough wooden board (d) dark soil
21. 21.🔍 Which is the odd one out? (a) a shiny steel plate (b) still clear water (c) a mirror (d) black cloth
22. 22.🧺 Do we need a battery cell for the periscope? (a) not needed (b) needed
23. 23.⚖️ 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
24. 24.True or false: still clear water reflects light poorly. (a) False (b) True
25. 25.True or false: a battery cell is needed for the periscope. (a) False (b) True
26. 26.🔭 Which of these reflects light poorly? (a) a mirror (b) black cloth (c) a shiny steel plate (d) aluminium foil
27. 27.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
28. 28.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 180 degrees (c) 10 degrees (d) 45 degrees
29. 29.🔭 How many mirrors does a simple periscope use?
30. 30.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
31. 31.🔭 How many times does light bounce off a mirror in a simple periscope?
32. 32.⚖️ 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) True (b) False
33. 33.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) vinegar (c) a battery cell (d) a pencil
34. 34.🔭 Which of these reflects light poorly? (a) a dull brick (b) a mirror (c) aluminium foil (d) a shiny steel plate
35. 35.True or false: vinegar is not needed for the periscope. (a) True (b) False
36. 36.🧺 Do we need a magnet for the periscope? (a) not needed (b) needed
37. 37.True or false: a battery cell is not needed for the periscope. (a) True (b) False
38. 38.True or false: a pencil is needed for the periscope. (a) False (b) True
39. 39.🧺 Which of these is not needed for the periscope? (a) a balloon (b) sticky tape (c) two small mirrors (d) a pencil
40. 40.⚖️ 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

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