Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 881 · 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 of these reflects light well? (a) a rough wooden board (b) black cloth (c) a dull brick (d) a shiny steel plate
2. 2.True or false: dark soil reflects light well. (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 ruler (c) two small mirrors (d) a magnet
4. 4.⚖️ 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
5. 5.True or false: a rough wooden board reflects light well. (a) True (b) False
6. 6.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is kept the same. (a) False (b) True
7. 7.⚖️ 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) False (b) True
8. 8.🔍 Which is the odd one out? (a) still clear water (b) a shiny steel plate (c) a rough wooden board (d) a mirror
9. 9.🛟 Who should cut the holes in the juice carton? (a) nobody needs to (b) a friend who is running (c) a grown-up (d) the youngest child
10. 10.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
11. 11.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) two small mirrors (c) a balloon (d) an empty juice carton
12. 12.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) two pictures (c) a brighter view (d) only darkness
13. 13.⚖️ 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
14. 14.⚖️ 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 same light (d) the same mirrors
15. 15.🔭 Does dark soil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
16. 16.🔍 Which is the odd one out? (a) aluminium foil (b) a mirror (c) dark soil (d) a shiny steel plate
17. 17.⚖️ 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
18. 18.True or false: aluminium foil reflects light poorly. (a) True (b) False
19. 19.🔭 What does a periscope let you do? (a) see in the dark (b) see germs (c) see over a wall (d) hear far sounds
20. 20.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
21. 21.🧺 Which of these is needed for the periscope? (a) a battery cell (b) turmeric powder (c) two small mirrors (d) vinegar
22. 22.True or false: a mirror reflects light well. (a) False (b) True
23. 23.True or false: a pencil is needed for the periscope. (a) True (b) False
24. 24.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) taller walls (c) the ground (d) nothing at all
25. 25.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
26. 26.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a battery cell (b) sticky tape (c) a pencil (d) an empty juice carton
27. 27.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 180 degrees (c) 45 degrees (d) 10 degrees
28. 28.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is what we measure. (a) True (b) False
29. 29.🔭 Who uses a periscope to look above the water? (a) a pilot in a plane (b) a submarine crew (c) a baker (d) a farmer
30. 30.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
31. 31.True or false: two small mirrors is needed for the periscope. (a) True (b) False
32. 32.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
33. 33.🧺 Which of these is needed for the periscope? (a) yeast (b) a balloon (c) an empty juice carton (d) vinegar
34. 34.🧺 Which of these is needed for the periscope? (a) sticky tape (b) yeast (c) vinegar (d) a balloon
35. 35.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) broken glass bits (c) big wall mirrors (d) plastic safety mirrors
36. 36.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a mirror (c) a dull brick (d) a shiny steel plate
37. 37.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
38. 38.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same carton (b) how clear the view is (c) the angle of the mirrors
39. 39.True or false: a balloon is not needed for the periscope. (a) False (b) True
40. 40.⚖️ 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) True (b) False

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