Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 629 · 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.🔍 Which is the odd one out? (a) a shiny steel plate (b) a dull brick (c) a mirror (d) aluminium foil
2. 2.⚖️ 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 measure it (c) we keep it the same
3. 3.🔭 Which of these reflects light well? (a) a rough wooden board (b) black cloth (c) a mirror (d) a dull brick
4. 4.🛟 Who should cut the holes in the juice carton? (a) nobody needs to (b) a friend who is running (c) the youngest child (d) a grown-up
5. 5.🔭 How many mirrors does a simple periscope use?
6. 6.🔍 Which is the odd one out? (a) black cloth (b) a dull brick (c) dark soil (d) aluminium foil
7. 7.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) nothing at all (b) the ground (c) taller walls (d) only short walls
8. 8.⚖️ 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
9. 9.🔭 Which of these reflects light well? (a) a dull brick (b) a shiny steel plate (c) dark soil (d) a rough wooden board
10. 10.🔭 Who uses a periscope to look above the water? (a) a baker (b) a farmer (c) a submarine crew (d) a pilot in a plane
11. 11.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) flipped left to right (b) in colour (c) much bigger (d) upside down only
12. 12.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
13. 13.🧺 Which of these is needed for the periscope? (a) sticky tape (b) a battery cell (c) a balloon (d) a magnet
14. 14.🧺 Do we need sticky tape for the periscope? (a) needed (b) not needed
15. 15.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
16. 16.⚖️ 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) the same mirrors (c) the angle of the mirrors (d) how clear the view is
17. 17.⚖️ 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 light (c) the object we look at (d) how clear the view is
18. 18.🧺 Which of these is not needed for the periscope? (a) a magnet (b) two small mirrors (c) an empty juice carton (d) a pencil
19. 19.⚖️ 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 light (c) how clear the view is
20. 20.🧺 Which of these is needed for the periscope? (a) a balloon (b) vinegar (c) a ruler (d) a magnet
21. 21.True or false: a magnet is not needed for the periscope. (a) False (b) True
22. 22.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
23. 23.True or false: an empty juice carton is not needed for the periscope. (a) False (b) True
24. 24.🔭 How many times does light bounce off a mirror in a simple periscope?
25. 25.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
26. 26.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a pencil (c) vinegar (d) two small mirrors
27. 27.True or false: sticky tape is not needed for the periscope. (a) True (b) False
28. 28.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) two small mirrors (c) sticky tape (d) a magnet
29. 29.True or false: vinegar is needed for the periscope. (a) True (b) False
30. 30.🔭 At what angle are the mirrors set in a simple periscope? (a) 180 degrees (b) 10 degrees (c) 45 degrees (d) 90 degrees
31. 31.⚖️ 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
32. 32.True or false: a dull brick reflects light poorly. (a) False (b) True
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 change it (c) we measure it
34. 34.🛟 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
35. 35.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
36. 36.⚖️ 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) True (b) False
37. 37.True or false: a pencil is not needed for the periscope. (a) True (b) False
38. 38.True or false: a balloon is not needed for the periscope. (a) False (b) True
39. 39.True or false: a battery cell is needed for the periscope. (a) False (b) True
40. 40.🔭 Why must the two mirrors face each other and be parallel? (a) so it can float (b) to make it heavy (c) so light reaches the eye (d) so it looks shiny

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