Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 202 · 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.🛟 Who should cut the holes in the juice carton? (a) a grown-up (b) the youngest child (c) a friend who is running (d) nobody needs to
2. 2.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) a pencil (c) two small mirrors (d) a balloon
3. 3.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
4. 4.🔍 Which is the odd one out? (a) a shiny steel plate (b) black cloth (c) aluminium foil (d) still clear water
5. 5.🔭 What does a periscope let you do? (a) see in the dark (b) see over a wall (c) see germs (d) hear far sounds
6. 6.⚖️ 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) the angle of the mirrors (d) how clear the view is
7. 7.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is what we measure. (a) True (b) False
8. 8.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) in colour (b) upside down only (c) flipped left to right (d) much bigger
9. 9.True or false: yeast is needed for the periscope. (a) False (b) True
10. 10.True or false: an empty juice carton is not needed for the periscope. (a) True (b) False
11. 11.True or false: yeast is not needed for the periscope. (a) False (b) True
12. 12.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
13. 13.🔭 How many times does light bounce off a mirror in a simple periscope?
14. 14.⚖️ 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) False (b) True
15. 15.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
16. 16.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) turmeric powder (b) sticky tape (c) an empty juice carton (d) two small mirrors
17. 17.🔭 Which of these reflects light poorly? (a) a mirror (b) still clear water (c) black cloth (d) aluminium foil
18. 18.🧺 Which of these is needed for the periscope? (a) two small mirrors (b) vinegar (c) yeast (d) a battery cell
19. 19.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we keep it the same (b) we measure it (c) we change it
20. 20.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
21. 21.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a magnet (c) a pencil (d) a ruler
22. 22.🔭 Which of these reflects light well? (a) a dull brick (b) dark soil (c) black cloth (d) still clear water
23. 23.True or false: a shiny steel plate reflects light poorly. (a) True (b) False
24. 24.🔍 Which is the odd one out? (a) a mirror (b) aluminium foil (c) a dull brick (d) a shiny steel plate
25. 25.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) only darkness (c) two pictures (d) a rainbow
26. 26.⚖️ 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
27. 27.🔭 How many mirrors does a simple periscope use?
28. 28.⚖️ 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
29. 29.True or false: a balloon is needed for the periscope. (a) False (b) True
30. 30.🔭 Who uses a periscope to look above the water? (a) a farmer (b) a baker (c) a submarine crew (d) a pilot in a plane
31. 31.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we change it (b) we measure it (c) we keep it the same
32. 32.🔍 Which is the odd one out? (a) a rough wooden board (b) a dull brick (c) dark soil (d) aluminium foil
33. 33.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) the ground (b) taller walls (c) only short walls (d) nothing at all
34. 34.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) a wall (c) a tree (d) the Sun
35. 35.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) sticky tape (c) a pencil (d) vinegar
36. 36.🔍 Which is the odd one out? (a) a mirror (b) aluminium foil (c) a shiny steel plate (d) dark soil
37. 37.True or false: a pencil is not needed for the periscope. (a) False (b) True
38. 38.True or false: still clear water reflects light well. (a) False (b) True
39. 39.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) yeast (c) an empty juice carton (d) a pencil
40. 40.True or false: turmeric powder is needed for the periscope. (a) False (b) True

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