Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 384 · 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.🛟 You must never point a periscope or a mirror at ___. (a) the Sun (b) a tree (c) a wall (d) a friend’s toy
2. 2.🔭 At what angle are the mirrors set in a simple periscope? (a) 45 degrees (b) 180 degrees (c) 10 degrees (d) 90 degrees
3. 3.🔭 How many mirrors does a simple periscope use?
4. 4.🔍 Which is the odd one out? (a) black cloth (b) a dull brick (c) a rough wooden board (d) still clear water
5. 5.🔭 How many times does light bounce off a mirror in a simple periscope?
6. 6.🔭 Which of these reflects light well? (a) black cloth (b) a dull brick (c) dark soil (d) a shiny steel plate
7. 7.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a pencil (c) a ruler (d) turmeric powder
8. 8.True or false: a mirror reflects light well. (a) True (b) False
9. 9.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
10. 10.True or false: an empty juice carton is not needed for the periscope. (a) False (b) True
11. 11.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
12. 12.🔮 Predict: you cover the top mirror with paper. What do you see? (a) only darkness (b) a rainbow (c) two pictures (d) a brighter view
13. 13.True or false: a balloon is not needed for the periscope. (a) True (b) False
14. 14.⚖️ 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 keep it the same (b) we measure it (c) we change it
15. 15.⚖️ 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 measure it (b) we change it (c) we keep it the same
16. 16.🧺 Which of these is not needed for the periscope? (a) a ruler (b) two small mirrors (c) sticky tape (d) yeast
17. 17.🧺 Which of these is not needed for the periscope? (a) a balloon (b) a pencil (c) two small mirrors (d) sticky tape
18. 18.🔍 Which is the odd one out? (a) black cloth (b) a dull brick (c) a rough wooden board (d) aluminium foil
19. 19.True or false: a rough wooden board reflects light poorly. (a) True (b) False
20. 20.🔭 Which of these reflects light poorly? (a) still clear water (b) aluminium foil (c) a dull brick (d) a shiny steel plate
21. 21.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we keep it the same (b) we measure it (c) we change it
22. 22.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a magnet (b) two small mirrors (c) a pencil (d) a ruler
23. 23.🧺 Which of these is needed for the periscope? (a) a balloon (b) sticky tape (c) yeast (d) a battery cell
24. 24.🔍 Which is the odd one out? (a) a dull brick (b) black cloth (c) a mirror (d) dark soil
25. 25.🔭 Why must the two mirrors face each other and be parallel? (a) so it can float (b) so it looks shiny (c) to make it heavy (d) so light reaches the eye
26. 26.🧺 Do we need a magnet for the periscope? (a) not needed (b) needed
27. 27.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
28. 28.🔍 Which is the odd one out? (a) still clear water (b) a shiny steel plate (c) black cloth (d) aluminium foil
29. 29.True or false: a magnet is needed for the periscope. (a) False (b) True
30. 30.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a battery cell (b) sticky tape (c) a pencil (d) an empty juice carton
31. 31.🔭 Which of these reflects light poorly? (a) aluminium foil (b) still clear water (c) dark soil (d) a mirror
32. 32.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
33. 33.⚖️ 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 same mirrors
34. 34.⚖️ 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
35. 35.🧺 Do we need a pencil for the periscope? (a) needed (b) not needed
36. 36.🧺 Do we need sticky tape for the periscope? (a) needed (b) not needed
37. 37.⚖️ 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
38. 38.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the angle of the mirrors (b) the same light (c) the same mirrors (d) the same carton
39. 39.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) nobody needs to (c) a grown-up (d) the youngest child
40. 40.🔍 Which is the odd one out? (a) aluminium foil (b) a shiny steel plate (c) a mirror (d) dark soil

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