Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 398 · 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 ruler is not needed for the periscope. (a) True (b) False
2. 2.🔍 Which is the odd one out? (a) black cloth (b) dark soil (c) aluminium foil (d) a dull brick
3. 3.True or false: a shiny steel plate reflects light well. (a) False (b) True
4. 4.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a ruler (c) sticky tape (d) a balloon
5. 5.🔍 Which is the odd one out? (a) black cloth (b) a shiny steel plate (c) a dull brick (d) dark soil
6. 6.🔭 How many mirrors does a simple periscope use?
7. 7.True or false: a rough wooden board reflects light well. (a) False (b) True
8. 8.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 45 degrees (c) 90 degrees (d) 180 degrees
9. 9.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
10. 10.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) broken glass bits (c) plastic safety mirrors (d) big wall mirrors
11. 11.🔭 Does dark soil 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? True or false: the same light is the one thing we change. (a) True (b) False
13. 13.🛟 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
14. 14.🔭 Who uses a periscope to look above the water? (a) a pilot in a plane (b) a baker (c) a submarine crew (d) a farmer
15. 15.⚖️ 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 light
16. 16.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is kept the same. (a) False (b) True
17. 17.🔮 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
18. 18.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
19. 19.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
20. 20.⚖️ 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 carton
21. 21.🔭 What does a periscope let you do? (a) see germs (b) hear far sounds (c) see in the dark (d) see over a wall
22. 22.🧺 Which of these is needed for the periscope? (a) a balloon (b) an empty juice carton (c) a battery cell (d) yeast
23. 23.🔭 How many times does light bounce off a mirror in a simple periscope?
24. 24.🧺 Which of these is needed for the periscope? (a) a battery cell (b) two small mirrors (c) vinegar (d) a magnet
25. 25.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
26. 26.🔍 Which is the odd one out? (a) aluminium foil (b) a shiny steel plate (c) a mirror (d) dark soil
27. 27.🔭 Which of these reflects light well? (a) dark soil (b) a rough wooden board (c) still clear water (d) black cloth
28. 28.🔭 Which of these reflects light poorly? (a) black cloth (b) aluminium foil (c) still clear water (d) a shiny steel plate
29. 29.True or false: turmeric powder is needed for the periscope. (a) True (b) False
30. 30.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is what we measure. (a) False (b) True
31. 31.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) sticky tape (c) a ruler (d) a magnet
32. 32.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
33. 33.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) the ground (c) taller walls (d) nothing at all
34. 34.🧺 Do we need vinegar for the periscope? (a) not needed (b) needed
35. 35.True or false: a dull brick reflects light poorly. (a) True (b) False
36. 36.True or false: a pencil is not needed for the periscope. (a) False (b) True
37. 37.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) a magnet (c) a ruler (d) a pencil
38. 38.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is kept the same. (a) False (b) True
39. 39.🧺 Which of these is not needed for the periscope? (a) a ruler (b) two small mirrors (c) yeast (d) sticky tape
40. 40.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is the one thing we change. (a) True (b) False

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