Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 767 · 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? True or false: the same light is kept the same. (a) True (b) False
2. 2.🔍 Which is the odd one out? (a) dark soil (b) aluminium foil (c) a dull brick (d) black cloth
3. 3.True or false: turmeric powder is not needed for the periscope. (a) True (b) False
4. 4.True or false: dark soil reflects light well. (a) True (b) False
5. 5.True or false: a mirror reflects light poorly. (a) False (b) True
6. 6.True or false: black cloth reflects light well. (a) True (b) False
7. 7.🔭 Which of these reflects light poorly? (a) a mirror (b) aluminium foil (c) a shiny steel plate (d) black cloth
8. 8.True or false: sticky tape is needed for the periscope. (a) False (b) True
9. 9.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
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) the same mirrors (b) how clear the view is (c) the same light (d) the angle of the mirrors
11. 11.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
12. 12.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) an empty juice carton (c) a pencil (d) a magnet
13. 13.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
14. 14.🧺 Which of these is needed for the periscope? (a) a balloon (b) vinegar (c) a pencil (d) yeast
15. 15.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a ruler (c) sticky tape (d) a balloon
16. 16.🔍 Which is the odd one out? (a) still clear water (b) a shiny steel plate (c) a rough wooden board (d) a mirror
17. 17.🔭 How many times does light bounce off a mirror in a simple periscope?
18. 18.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
19. 19.🔮 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
20. 20.True or false: a mirror reflects light well. (a) True (b) False
21. 21.🔭 Who uses a periscope to look above the water? (a) a farmer (b) a submarine crew (c) a pilot in a plane (d) a baker
22. 22.🔍 Which is the odd one out? (a) a dull brick (b) aluminium foil (c) a mirror (d) still clear water
23. 23.⚖️ 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 keep it the same (b) we change it (c) we measure it
24. 24.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
25. 25.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) an empty juice carton (c) two small mirrors (d) a battery cell
26. 26.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
27. 27.⚖️ 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
28. 28.🔍 Which is the odd one out? (a) black cloth (b) a shiny steel plate (c) a dull brick (d) a rough wooden board
29. 29.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) nobody needs to (c) a friend who is running (d) a grown-up
30. 30.⚖️ 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 same mirrors (c) the angle of the mirrors (d) the same light
31. 31.🔭 How many mirrors does a simple periscope use?
32. 32.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
33. 33.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is kept the same. (a) False (b) True
34. 34.🔭 Why must the two mirrors face each other and be parallel? (a) so light reaches the eye (b) to make it heavy (c) so it can float (d) so it looks shiny
35. 35.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) a dull brick (c) a mirror (d) still clear water
36. 36.True or false: an empty juice carton is not needed for the periscope. (a) True (b) False
37. 37.True or false: dark soil reflects light poorly. (a) True (b) False
38. 38.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a pencil (c) vinegar (d) two small mirrors
39. 39.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) a rough wooden board (c) a mirror (d) aluminium foil
40. 40.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) turmeric powder (b) an empty juice carton (c) two small mirrors (d) a pencil

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