Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 418 · 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: aluminium foil reflects light well. (a) False (b) True
2. 2.True or false: dark soil reflects light poorly. (a) True (b) False
3. 3.🧺 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
4. 4.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
5. 5.True or false: black cloth reflects light well. (a) True (b) False
6. 6.True or false: a pencil is not needed for the periscope. (a) False (b) True
7. 7.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) broken glass bits (c) loose glass panes (d) plastic safety mirrors
8. 8.🔭 Who uses a periscope to look above the water? (a) a baker (b) a pilot in a plane (c) a submarine crew (d) a farmer
9. 9.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) nothing at all (b) only short walls (c) taller walls (d) the ground
10. 10.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) an empty juice carton (c) a ruler (d) a battery cell
11. 11.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
12. 12.⚖️ 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
13. 13.⚖️ 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 measure it (b) we change it (c) we keep it the same
14. 14.🔍 Which is the odd one out? (a) still clear water (b) a mirror (c) dark soil (d) aluminium foil
15. 15.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) a pencil (c) a magnet (d) sticky tape
16. 16.🔍 Which is the odd one out? (a) aluminium foil (b) black cloth (c) still clear water (d) a shiny steel plate
17. 17.🧺 Which of these is needed for the periscope? (a) vinegar (b) yeast (c) a magnet (d) a ruler
18. 18.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) black cloth (c) aluminium foil (d) still clear water
19. 19.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
20. 20.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the angle of the mirrors (b) the same mirrors (c) the object we look at (d) the same carton
21. 21.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
22. 22.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a balloon (b) a ruler (c) two small mirrors (d) a pencil
23. 23.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) a rainbow (c) only darkness (d) two pictures
24. 24.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
25. 25.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a ruler (c) yeast (d) sticky tape
26. 26.🛟 Who should cut the holes in the juice carton? (a) nobody needs to (b) a grown-up (c) the youngest child (d) a friend who is running
27. 27.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) sticky tape (c) two small mirrors (d) vinegar
28. 28.⚖️ 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) how clear the view is (c) the same carton (d) the object we look at
29. 29.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
30. 30.🔍 Which is the odd one out? (a) a shiny steel plate (b) a dull brick (c) a rough wooden board (d) black cloth
31. 31.🧺 Which of these is not needed for the periscope? (a) turmeric powder (b) a pencil (c) two small mirrors (d) a ruler
32. 32.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same mirrors (b) the angle of the mirrors (c) how clear the view is
33. 33.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
34. 34.🔭 How many mirrors does a simple periscope use?
35. 35.True or false: dark soil reflects light well. (a) True (b) False
36. 36.⚖️ 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) how clear the view is (c) the same light
37. 37.🧺 Which of these is not needed for the periscope? (a) vinegar (b) a ruler (c) sticky tape (d) two small mirrors
38. 38.True or false: still clear water reflects light poorly. (a) True (b) False
39. 39.True or false: a shiny steel plate reflects light poorly. (a) True (b) False
40. 40.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) sticky tape (c) yeast (d) a magnet

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