Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 73 · 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.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) flipped left to right (c) in colour (d) upside down only
2. 2.🔭 Which of these reflects light well? (a) a dull brick (b) black cloth (c) a rough wooden board (d) aluminium foil
3. 3.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) a balloon (c) a pencil (d) an empty juice carton
4. 4.🔭 What does a periscope let you do? (a) see in the dark (b) hear far sounds (c) see over a wall (d) see germs
5. 5.🔭 Which of these reflects light well? (a) black cloth (b) dark soil (c) a shiny steel plate (d) a dull brick
6. 6.⚖️ 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 keep it the same (c) we change it
7. 7.⚖️ 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
8. 8.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) a brighter view (c) two pictures (d) only darkness
9. 9.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
10. 10.🔭 At what angle are the mirrors set in a simple periscope? (a) 180 degrees (b) 45 degrees (c) 10 degrees (d) 90 degrees
11. 11.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “how clear the view is”? (a) we change it (b) we measure it (c) we keep it the same
12. 12.🔭 How many mirrors does a simple periscope use?
13. 13.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well
14. 14.🧺 Which of these is needed for the periscope? (a) vinegar (b) a balloon (c) a magnet (d) two small mirrors
15. 15.🔭 Which of these reflects light well? (a) a rough wooden board (b) dark soil (c) black cloth (d) a mirror
16. 16.🔭 Which of these reflects light poorly? (a) a dull brick (b) aluminium foil (c) a shiny steel plate (d) still clear water
17. 17.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
18. 18.⚖️ 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) the same light (c) how clear the view is (d) the angle of the mirrors
19. 19.True or false: a rough wooden board reflects light well. (a) False (b) True
20. 20.⚖️ 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
21. 21.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) two small mirrors (c) a magnet (d) a ruler
22. 22.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) vinegar (c) a pencil (d) sticky tape
23. 23.True or false: aluminium foil reflects light poorly. (a) True (b) False
24. 24.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
25. 25.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we change it (b) we measure it (c) we keep it the same
26. 26.True or false: black cloth reflects light poorly. (a) True (b) False
27. 27.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) nothing at all (b) taller walls (c) the ground (d) only short walls
28. 28.🔭 Which of these reflects light poorly? (a) a mirror (b) black cloth (c) a shiny steel plate (d) aluminium foil
29. 29.True or false: a shiny steel plate reflects light poorly. (a) False (b) True
30. 30.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is the one thing we change. (a) False (b) True
31. 31.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the same light (b) the same mirrors (c) the same carton (d) the angle of the mirrors
32. 32.🧺 Which of these is needed for the periscope? (a) a ruler (b) a balloon (c) a magnet (d) turmeric powder
33. 33.🧺 Do we need a pencil for the periscope? (a) not needed (b) needed
34. 34.True or false: an empty juice carton is not needed for the periscope. (a) True (b) False
35. 35.🛟 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
36. 36.🔍 Which is the odd one out? (a) still clear water (b) aluminium foil (c) a mirror (d) a dull brick
37. 37.True or false: a mirror reflects light poorly. (a) True (b) False
38. 38.🔭 Who uses a periscope to look above the water? (a) a farmer (b) a submarine crew (c) a baker (d) a pilot in a plane
39. 39.🔭 How many times does light bounce off a mirror in a simple periscope?
40. 40.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed

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