Periscope STEM Project Worksheet

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

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