Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 522 · 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 hold a written word up to a mirror. The letters look ___. (a) upside down only (b) much bigger (c) flipped left to right (d) in colour
2. 2.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) turmeric powder (c) an empty juice carton (d) a pencil
3. 3.🔭 Which of these reflects light poorly? (a) aluminium foil (b) still clear water (c) a mirror (d) a dull brick
4. 4.🔮 Predict: you cover the top mirror with paper. What do you see? (a) only darkness (b) a brighter view (c) two pictures (d) a rainbow
5. 5.🔭 How many mirrors does a simple periscope use?
6. 6.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is the one thing we change. (a) False (b) True
7. 7.⚖️ 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
8. 8.🔍 Which is the odd one out? (a) dark soil (b) still clear water (c) a dull brick (d) black cloth
9. 9.True or false: a magnet is not needed for the periscope. (a) False (b) True
10. 10.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is kept the same. (a) False (b) True
11. 11.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
12. 12.🔭 Why must the two mirrors face each other and be parallel? (a) so it looks shiny (b) so light reaches the eye (c) so it can float (d) to make it heavy
13. 13.⚖️ 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) the angle of the mirrors (c) the same carton (d) how clear the view is
14. 14.🔍 Which is the odd one out? (a) dark soil (b) a mirror (c) a shiny steel plate (d) still clear water
15. 15.🧺 Do we need a battery cell for the periscope? (a) not needed (b) needed
16. 16.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) two small mirrors (c) a balloon (d) a pencil
17. 17.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
18. 18.🔍 Which is the odd one out? (a) a rough wooden board (b) dark soil (c) a mirror (d) a dull brick
19. 19.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) a ruler (c) a magnet (d) a pencil
20. 20.🔍 Which is the odd one out? (a) a shiny steel plate (b) a dull brick (c) a rough wooden board (d) black cloth
21. 21.🧺 Do we need a pencil for the periscope? (a) not needed (b) needed
22. 22.True or false: a battery cell is needed for the periscope. (a) True (b) False
23. 23.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) vinegar (c) sticky tape (d) a balloon
24. 24.True or false: a rough wooden board reflects light well. (a) True (b) False
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 angle of the mirrors (c) the object we look at
26. 26.True or false: turmeric powder is needed for the periscope. (a) True (b) False
27. 27.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 180 degrees (c) 10 degrees (d) 45 degrees
28. 28.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
29. 29.🔭 Which of these reflects light poorly? (a) a mirror (b) a shiny steel plate (c) aluminium foil (d) black cloth
30. 30.🧺 Which of these is needed for the periscope? (a) yeast (b) an empty juice carton (c) a balloon (d) turmeric powder
31. 31.🔭 Which of these reflects light well? (a) black cloth (b) a mirror (c) a dull brick (d) a rough wooden board
32. 32.🔭 Which of these reflects light poorly? (a) still clear water (b) dark soil (c) a mirror (d) aluminium foil
33. 33.⚖️ 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
34. 34.True or false: still clear water reflects light well. (a) False (b) True
35. 35.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) a pencil (c) a magnet (d) an empty juice carton
36. 36.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is kept the same. (a) True (b) False
37. 37.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) a grown-up (c) nobody needs to (d) the youngest child
38. 38.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
39. 39.True or false: black cloth reflects light well. (a) True (b) False
40. 40.🔭 How many times does light bounce off a mirror in a simple periscope?

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