Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 543 · 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 shiny steel plate (b) dark soil (c) black cloth (d) a dull brick
2. 2.🧺 Do we need a balloon for the periscope? (a) not needed (b) needed
3. 3.🧺 Which of these is needed for the periscope? (a) a balloon (b) a magnet (c) sticky tape (d) vinegar
4. 4.True or false: still clear water reflects light poorly. (a) False (b) True
5. 5.True or false: a ruler is not needed for the periscope. (a) True (b) False
6. 6.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 45 degrees (c) 10 degrees (d) 180 degrees
7. 7.🔭 Which of these reflects light poorly? (a) a mirror (b) black cloth (c) still clear water (d) aluminium foil
8. 8.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a ruler (c) a pencil (d) yeast
9. 9.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) a wall (c) a tree (d) the Sun
10. 10.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) how clear the view is (b) the same carton (c) the same light (d) the object we look at
11. 11.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
12. 12.⚖️ 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 keep it the same (b) we change it (c) we measure it
13. 13.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
14. 14.True or false: a shiny steel plate reflects light poorly. (a) True (b) False
15. 15.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) nothing at all (b) the ground (c) taller walls (d) only short walls
16. 16.True or false: a battery cell is needed for the periscope. (a) False (b) True
17. 17.True or false: yeast is not needed for the periscope. (a) True (b) False
18. 18.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) sticky tape (c) turmeric powder (d) a ruler
19. 19.⚖️ 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 change it (c) we measure it
20. 20.🔭 Who uses a periscope to look above the water? (a) a baker (b) a submarine crew (c) a pilot in a plane (d) a farmer
21. 21.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed
22. 22.🔭 What does a periscope let you do? (a) hear far sounds (b) see in the dark (c) see over a wall (d) see germs
23. 23.True or false: a pencil is not needed for the periscope. (a) False (b) True
24. 24.🔭 Which of these reflects light well? (a) a dull brick (b) dark soil (c) black cloth (d) a mirror
25. 25.True or false: a rough wooden board reflects light poorly. (a) False (b) True
26. 26.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
27. 27.⚖️ 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 measure it (b) we change it (c) we keep it the same
28. 28.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a balloon (c) sticky tape (d) two small mirrors
29. 29.🛟 Who should cut the holes in the juice carton? (a) nobody needs to (b) the youngest child (c) a friend who is running (d) a grown-up
30. 30.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
31. 31.True or false: still clear water reflects light well. (a) False (b) True
32. 32.True or false: a shiny steel plate reflects light well. (a) True (b) False
33. 33.⚖️ 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 change it (c) we measure it
34. 34.True or false: a pencil is needed for the periscope. (a) False (b) True
35. 35.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) in colour (c) flipped left to right (d) upside down only
36. 36.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same light (b) the angle of the mirrors (c) how clear the view is
37. 37.🔭 How many mirrors does a simple periscope use?
38. 38.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a mirror (c) dark soil (d) a shiny steel plate
39. 39.🔭 Which of these reflects light poorly? (a) still clear water (b) a rough wooden board (c) a shiny steel plate (d) aluminium foil
40. 40.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is what we measure. (a) False (b) True

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