Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 867 · 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.🔭 Why must the two mirrors face each other and be parallel? (a) so it looks shiny (b) to make it heavy (c) so light reaches the eye (d) so it can float
2. 2.🔍 Which is the odd one out? (a) black cloth (b) dark soil (c) a shiny steel plate (d) a dull brick
3. 3.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) a magnet (c) a pencil (d) an empty juice carton
4. 4.🛟 Which mirrors are safest for a children’s periscope? (a) plastic safety mirrors (b) loose glass panes (c) big wall mirrors (d) broken glass bits
5. 5.True or false: two small mirrors is needed for the periscope. (a) False (b) True
6. 6.🔭 Who uses a periscope to look above the water? (a) a farmer (b) a submarine crew (c) a pilot in a plane (d) a baker
7. 7.🔭 How many times does light bounce off a mirror in a simple periscope?
8. 8.🔭 Which of these reflects light well? (a) dark soil (b) black cloth (c) a mirror (d) a dull brick
9. 9.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) two small mirrors (c) a ruler (d) yeast
10. 10.True or false: aluminium foil reflects light well. (a) False (b) True
11. 11.🔭 Which of these reflects light well? (a) aluminium foil (b) a rough wooden board (c) a dull brick (d) dark soil
12. 12.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) nothing at all (b) the ground (c) only short walls (d) taller walls
13. 13.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) a balloon (c) a ruler (d) an empty juice carton
14. 14.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is kept the same. (a) True (b) False
15. 15.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
16. 16.True or false: sticky tape is not needed for the periscope. (a) True (b) False
17. 17.🔭 Which of these reflects light well? (a) black cloth (b) still clear water (c) a dull brick (d) a rough wooden board
18. 18.🧺 Which of these is not needed for the periscope? (a) vinegar (b) a ruler (c) a pencil (d) an empty juice carton
19. 19.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) vinegar (c) yeast (d) a ruler
20. 20.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) much bigger (c) flipped left to right (d) in colour
21. 21.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the angle of the mirrors (b) how clear the view is (c) the same mirrors (d) the same light
22. 22.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well
23. 23.⚖️ 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) the same carton (c) the object we look at (d) the angle of the mirrors
24. 24.🧺 Do we need vinegar for the periscope? (a) not needed (b) needed
25. 25.🔍 Which is the odd one out? (a) aluminium foil (b) a dull brick (c) dark soil (d) black cloth
26. 26.🔍 Which is the odd one out? (a) a mirror (b) a dull brick (c) still clear water (d) a shiny steel plate
27. 27.True or false: a pencil is needed for the periscope. (a) False (b) True
28. 28.🔭 How many mirrors does a simple periscope use?
29. 29.🔍 Which is the odd one out? (a) still clear water (b) aluminium foil (c) a rough wooden board (d) a shiny steel plate
30. 30.⚖️ 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
31. 31.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is kept the same. (a) False (b) True
32. 32.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 45 degrees (c) 180 degrees (d) 90 degrees
33. 33.True or false: a battery cell is not needed for the periscope. (a) False (b) True
34. 34.🧺 Which of these is needed for the periscope? (a) a magnet (b) two small mirrors (c) a battery cell (d) yeast
35. 35.⚖️ 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
36. 36.True or false: an empty juice carton is not needed for the periscope. (a) False (b) True
37. 37.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) a mirror (c) still clear water (d) black cloth
38. 38.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) a brighter view (c) a rainbow (d) only darkness
39. 39.⚖️ 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
40. 40.True or false: a mirror reflects light well. (a) False (b) True

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