Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 622 · 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) in colour (b) upside down only (c) much bigger (d) flipped left to right
2. 2.True or false: a mirror reflects light poorly. (a) False (b) True
3. 3.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) an empty juice carton (c) sticky tape (d) a balloon
4. 4.True or false: a pencil is not needed for the periscope. (a) False (b) True
5. 5.🔭 Which of these reflects light poorly? (a) aluminium foil (b) dark soil (c) still clear water (d) a mirror
6. 6.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a shiny steel plate (c) a dull brick (d) a mirror
7. 7.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a pencil (c) yeast (d) a ruler
8. 8.🧺 Which of these is needed for the periscope? (a) a pencil (b) yeast (c) a magnet (d) a balloon
9. 9.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 10 degrees (c) 45 degrees (d) 180 degrees
10. 10.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) vinegar (b) sticky tape (c) a pencil (d) a ruler
11. 11.🔮 Predict: you cover the top mirror with paper. What do you see? (a) only darkness (b) two pictures (c) a brighter view (d) a rainbow
12. 12.⚖️ 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 keep it the same (b) we change it (c) we measure it
13. 13.True or false: a rough wooden board reflects light poorly. (a) True (b) False
14. 14.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a balloon (b) an empty juice carton (c) sticky tape (d) a ruler
15. 15.🔭 How many mirrors does a simple periscope use?
16. 16.🔭 How many times does light bounce off a mirror in a simple periscope?
17. 17.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
18. 18.True or false: a shiny steel plate reflects light well. (a) False (b) True
19. 19.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a magnet (c) a ruler (d) a pencil
20. 20.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) the ground (b) taller walls (c) only short walls (d) nothing at all
21. 21.🧺 Which of these is needed for the periscope? (a) a magnet (b) a battery cell (c) two small mirrors (d) a balloon
22. 22.⚖️ 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) how clear the view is (c) the angle of the mirrors
23. 23.🔍 Which is the odd one out? (a) a dull brick (b) aluminium foil (c) black cloth (d) a rough wooden board
24. 24.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
25. 25.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a ruler (c) a magnet (d) two small mirrors
26. 26.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) big wall mirrors (c) broken glass bits (d) plastic safety mirrors
27. 27.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
28. 28.🔭 Who uses a periscope to look above the water? (a) a farmer (b) a pilot in a plane (c) a baker (d) a submarine crew
29. 29.⚖️ 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 keep it the same (b) we change it (c) we measure it
30. 30.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed
31. 31.🔍 Which is the odd one out? (a) a mirror (b) a rough wooden board (c) aluminium foil (d) still clear water
32. 32.🔍 Which is the odd one out? (a) still clear water (b) a mirror (c) aluminium foil (d) a dull brick
33. 33.🔭 What does a periscope let you do? (a) see germs (b) see over a wall (c) hear far sounds (d) see in the dark
34. 34.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) turmeric powder (c) a pencil (d) sticky tape
35. 35.⚖️ 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 mirrors (b) how clear the view is (c) the same carton (d) the angle of the mirrors
36. 36.🔍 Which is the odd one out? (a) a dull brick (b) black cloth (c) a rough wooden board (d) still clear water
37. 37.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the object we look at (b) the angle of the mirrors (c) how clear the view is (d) the same carton
38. 38.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a friend’s toy (c) the Sun (d) a wall
39. 39.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
40. 40.True or false: a battery cell is not needed for the periscope. (a) False (b) True

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