Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 464 · 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 of these reflects light well? (a) black cloth (b) a mirror (c) a rough wooden board (d) dark soil
2. 2.⚖️ 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 change it (c) we keep it the same
3. 3.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a pencil (c) vinegar (d) sticky tape
4. 4.True or false: a shiny steel plate reflects light well. (a) False (b) True
5. 5.🧺 Do we need sticky tape for the periscope? (a) needed (b) not needed
6. 6.🛟 You must never point a periscope or a mirror at ___. (a) the Sun (b) a wall (c) a friend’s toy (d) a tree
7. 7.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the object we look at (b) the same light (c) how clear the view is (d) the same mirrors
8. 8.🔭 Which of these reflects light well? (a) black cloth (b) a rough wooden board (c) a dull brick (d) still clear water
9. 9.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the object we look at (b) how clear the view is (c) the same mirrors (d) the angle of the mirrors
10. 10.⚖️ 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
11. 11.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
12. 12.🔭 Which of these reflects light poorly? (a) aluminium foil (b) black cloth (c) a mirror (d) a shiny steel plate
13. 13.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) a grown-up (c) the youngest child (d) nobody needs to
14. 14.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) yeast (c) a magnet (d) an empty juice carton
15. 15.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is kept the same. (a) False (b) True
16. 16.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) in colour (b) flipped left to right (c) upside down only (d) much bigger
17. 17.🔭 How many times does light bounce off a mirror in a simple periscope?
18. 18.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is the one thing we change. (a) False (b) True
19. 19.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a pencil (c) sticky tape (d) a battery cell
20. 20.⚖️ 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 measure it (c) we change it
21. 21.True or false: dark soil reflects light poorly. (a) False (b) True
22. 22.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 45 degrees (c) 10 degrees (d) 180 degrees
23. 23.⚖️ 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
24. 24.🔭 How many mirrors does a simple periscope use?
25. 25.⚖️ 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 change it (c) we measure it
26. 26.True or false: turmeric powder is needed for the periscope. (a) True (b) False
27. 27.🧺 Which of these is not needed for the periscope? (a) a pencil (b) an empty juice carton (c) two small mirrors (d) vinegar
28. 28.True or false: yeast is not needed for the periscope. (a) False (b) True
29. 29.⚖️ 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
30. 30.🔭 Why must the two mirrors face each other and be parallel? (a) to make it heavy (b) so it can float (c) so it looks shiny (d) so light reaches the eye
31. 31.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
32. 32.🧺 Which of these is not needed for the periscope? (a) a balloon (b) sticky tape (c) two small mirrors (d) a pencil
33. 33.🛟 Which mirrors are safest for a children’s periscope? (a) plastic safety mirrors (b) loose glass panes (c) broken glass bits (d) big wall mirrors
34. 34.🔍 Which is the odd one out? (a) a rough wooden board (b) still clear water (c) a shiny steel plate (d) aluminium foil
35. 35.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
36. 36.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) a ruler (c) yeast (d) a pencil
37. 37.True or false: vinegar is not needed for the periscope. (a) True (b) False
38. 38.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) taller walls (c) the ground (d) nothing at all
39. 39.⚖️ 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 same carton (c) the angle of the mirrors
40. 40.True or false: a mirror reflects light well. (a) False (b) True

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