Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 289 · 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.⚖️ 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 same light (c) the angle of the mirrors (d) the object we look at
2. 2.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) loose glass panes (c) plastic safety mirrors (d) big wall mirrors
3. 3.🔭 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
4. 4.⚖️ 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) the same light (c) how clear the view is
5. 5.🔍 Which is the odd one out? (a) a dull brick (b) a shiny steel plate (c) a mirror (d) aluminium foil
6. 6.🧺 Which of these is not needed for the periscope? (a) a magnet (b) sticky tape (c) an empty juice carton (d) a pencil
7. 7.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) turmeric powder (c) sticky tape (d) two small mirrors
8. 8.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
9. 9.🛟 You must never point a periscope or a mirror at ___. (a) the Sun (b) a tree (c) a friend’s toy (d) a wall
10. 10.⚖️ 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 change it (b) we keep it the same (c) we measure it
11. 11.🧺 Which of these is needed for the periscope? (a) a ruler (b) a balloon (c) yeast (d) a battery cell
12. 12.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
13. 13.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) a battery cell (c) sticky tape (d) a ruler
14. 14.🔭 Which of these reflects light well? (a) black cloth (b) dark soil (c) a rough wooden board (d) aluminium foil
15. 15.🛟 Who should cut the holes in the juice carton? (a) nobody needs to (b) a friend who is running (c) the youngest child (d) a grown-up
16. 16.🔍 Which is the odd one out? (a) a dull brick (b) a shiny steel plate (c) dark soil (d) black cloth
17. 17.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
18. 18.🔭 How many mirrors does a simple periscope use?
19. 19.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
20. 20.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
21. 21.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 10 degrees (c) 180 degrees (d) 45 degrees
22. 22.🔭 Does a mirror 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? True or false: the same carton is what we measure. (a) True (b) False
24. 24.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) nothing at all (b) taller walls (c) only short walls (d) the ground
25. 25.🔭 Why must the two mirrors face each other and be parallel? (a) so light reaches the eye (b) to make it heavy (c) so it looks shiny (d) so it can float
26. 26.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) upside down only (c) flipped left to right (d) in colour
27. 27.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we measure it (b) we keep it the same (c) we change it
28. 28.True or false: a mirror reflects light well. (a) True (b) False
29. 29.⚖️ 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 angle of the mirrors (c) how clear the view is (d) the object we look at
30. 30.🧺 Do we need sticky tape for the periscope? (a) needed (b) not needed
31. 31.🧺 Which of these is needed for the periscope? (a) a magnet (b) a battery cell (c) vinegar (d) two small mirrors
32. 32.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
33. 33.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) two pictures (c) a rainbow (d) only darkness
34. 34.True or false: aluminium foil reflects light well. (a) True (b) False
35. 35.🧺 Which of these is needed for the periscope? (a) yeast (b) a magnet (c) an empty juice carton (d) vinegar
36. 36.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is the one thing we change. (a) True (b) False
37. 37.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) yeast (b) sticky tape (c) two small mirrors (d) an empty juice carton
38. 38.⚖️ 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
39. 39.🔭 How many times does light bounce off a mirror in a simple periscope?
40. 40.🔭 Which of these reflects light poorly? (a) aluminium foil (b) still clear water (c) a mirror (d) black cloth

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