Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 263 · 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 mirror (b) black cloth (c) a rough wooden board (d) a dull brick
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 keep it the same (b) we measure it (c) we change it
3. 3.🛟 Who should cut the holes in the juice carton? (a) a grown-up (b) a friend who is running (c) the youngest child (d) nobody needs to
4. 4.🧺 Which of these is needed for the periscope? (a) yeast (b) turmeric powder (c) a balloon (d) two small mirrors
5. 5.🧺 Do we need a battery cell for the periscope? (a) not needed (b) needed
6. 6.🔭 How many mirrors does a simple periscope use?
7. 7.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
8. 8.🧺 Do we need a pencil for the periscope? (a) needed (b) not needed
9. 9.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
10. 10.🔭 How many times does light bounce off a mirror in a simple periscope?
11. 11.⚖️ 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
12. 12.⚖️ 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
13. 13.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same mirrors (b) the object we look at (c) how clear the view is (d) the same light
14. 14.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a balloon (b) sticky tape (c) an empty juice carton (d) a pencil
15. 15.⚖️ 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 light (b) how clear the view is (c) the object we look at (d) the angle of the mirrors
16. 16.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) in colour (b) upside down only (c) much bigger (d) flipped left to right
17. 17.⚖️ 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 object we look at (c) how clear the view is
18. 18.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a magnet (c) two small mirrors (d) a ruler
19. 19.True or false: dark soil reflects light well. (a) False (b) True
20. 20.⚖️ 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
21. 21.🔭 Which of these reflects light well? (a) still clear water (b) black cloth (c) a dull brick (d) a rough wooden board
22. 22.True or false: two small mirrors is not needed for the periscope. (a) False (b) True
23. 23.🔭 Who uses a periscope to look above the water? (a) a farmer (b) a pilot in a plane (c) a submarine crew (d) a baker
24. 24.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
25. 25.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is what we measure. (a) True (b) False
26. 26.True or false: an empty juice carton is needed for the periscope. (a) True (b) False
27. 27.🔍 Which is the odd one out? (a) aluminium foil (b) still clear water (c) a mirror (d) a dull brick
28. 28.True or false: a balloon is not needed for the periscope. (a) True (b) False
29. 29.True or false: a dull brick reflects light poorly. (a) True (b) False
30. 30.🔮 Predict: you cover the top mirror with paper. What do you see? (a) only darkness (b) a brighter view (c) a rainbow (d) two pictures
31. 31.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
32. 32.True or false: a magnet is needed for the periscope. (a) False (b) True
33. 33.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
34. 34.True or false: an empty juice carton is not needed for the periscope. (a) False (b) True
35. 35.🔮 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
36. 36.🔍 Which is the odd one out? (a) a dull brick (b) still clear water (c) black cloth (d) a rough wooden board
37. 37.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 90 degrees (c) 180 degrees (d) 45 degrees
38. 38.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) a magnet (c) a balloon (d) an empty juice carton
39. 39.True or false: a battery cell is not needed for the periscope. (a) True (b) False
40. 40.🔭 Why must the two mirrors face each other and be parallel? (a) so it looks shiny (b) to make it heavy (c) so light reaches the eye (d) so it can float

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