Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 390 · 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.True or false: a battery cell is not needed for the periscope. (a) True (b) False
2. 2.⚖️ 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 keep it the same (c) we change it
3. 3.⚖️ 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 mirrors (c) how clear the view is (d) the same light
4. 4.⚖️ 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 light (c) the angle of the mirrors
5. 5.🧺 Do we need a battery cell for the periscope? (a) not needed (b) needed
6. 6.🔍 Which is the odd one out? (a) dark soil (b) a shiny steel plate (c) black cloth (d) a rough wooden board
7. 7.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) yeast (c) a pencil (d) an empty juice carton
8. 8.🧺 Which of these is needed for the periscope? (a) vinegar (b) an empty juice carton (c) a balloon (d) turmeric powder
9. 9.🧺 Do we need a pencil for the periscope? (a) needed (b) not needed
10. 10.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) upside down only (c) in colour (d) flipped left to right
11. 11.⚖️ 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
12. 12.🔭 What does a periscope let you do? (a) hear far sounds (b) see germs (c) see in the dark (d) see over a wall
13. 13.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
14. 14.🔭 Which of these reflects light well? (a) a rough wooden board (b) dark soil (c) a mirror (d) a dull brick
15. 15.🔭 Which of these reflects light well? (a) still clear water (b) dark soil (c) a dull brick (d) black cloth
16. 16.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) two small mirrors (c) an empty juice carton (d) a magnet
17. 17.True or false: turmeric powder is needed for the periscope. (a) True (b) False
18. 18.🔍 Which is the odd one out? (a) still clear water (b) a mirror (c) black cloth (d) a shiny steel plate
19. 19.True or false: yeast is needed for the periscope. (a) True (b) False
20. 20.🔭 How many mirrors does a simple periscope use?
21. 21.True or false: a ruler is needed for the periscope. (a) False (b) True
22. 22.🧺 Which of these is needed for the periscope? (a) a battery cell (b) turmeric powder (c) vinegar (d) two small mirrors
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 change it (b) we measure it (c) we keep it the same
24. 24.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) a rainbow (c) only darkness (d) a brighter view
25. 25.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
26. 26.True or false: two small mirrors is not needed for the periscope. (a) False (b) True
27. 27.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) taller walls (b) the ground (c) only short walls (d) nothing at all
28. 28.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) how clear the view is (b) the angle of the mirrors (c) the same carton (d) the same mirrors
29. 29.🧺 Which of these is needed for the periscope? (a) a magnet (b) vinegar (c) a balloon (d) a pencil
30. 30.True or false: still clear water reflects light poorly. (a) True (b) False
31. 31.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we change it (b) we measure it (c) we keep it the same
32. 32.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is what we measure. (a) False (b) True
33. 33.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
34. 34.🛟 Who should cut the holes in the juice carton? (a) a grown-up (b) nobody needs to (c) a friend who is running (d) the youngest child
35. 35.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
36. 36.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) an empty juice carton (c) a balloon (d) a ruler
37. 37.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) a balloon (c) an empty juice carton (d) a ruler
38. 38.⚖️ 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) True (b) False
39. 39.True or false: a magnet is not needed for the periscope. (a) False (b) True
40. 40.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) a tree (c) the Sun (d) a friend’s toy

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