Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 574 · 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) upside down only (b) much bigger (c) flipped left to right (d) in colour
2. 2.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) taller walls (b) the ground (c) only short walls (d) nothing at all
3. 3.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
4. 4.🔍 Which is the odd one out? (a) a shiny steel plate (b) a rough wooden board (c) aluminium foil (d) a mirror
5. 5.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a wall (c) the Sun (d) a friend’s toy
6. 6.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
7. 7.True or false: vinegar is needed for the periscope. (a) False (b) True
8. 8.🔭 How many mirrors does a simple periscope use?
9. 9.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
10. 10.🔭 How many times does light bounce off a mirror in a simple periscope?
11. 11.🧺 Which of these is needed for the periscope? (a) a battery cell (b) yeast (c) an empty juice carton (d) a balloon
12. 12.True or false: vinegar is not needed for the periscope. (a) True (b) False
13. 13.True or false: a battery cell is not needed for the periscope. (a) True (b) False
14. 14.🧺 Which of these is needed for the periscope? (a) a battery cell (b) turmeric powder (c) a pencil (d) a magnet
15. 15.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed
16. 16.🧺 Which of these is not needed for the periscope? (a) a magnet (b) an empty juice carton (c) two small mirrors (d) a ruler
17. 17.⚖️ 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 carton (b) how clear the view is (c) the same mirrors (d) the angle of the mirrors
18. 18.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a ruler (c) sticky tape (d) vinegar
19. 19.🧺 Which of these is not needed for the periscope? (a) a pencil (b) two small mirrors (c) yeast (d) an empty juice carton
20. 20.🔮 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
21. 21.⚖️ 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
22. 22.🧺 Do we need a pencil for the periscope? (a) needed (b) not needed
23. 23.⚖️ 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
24. 24.🔭 Which of these reflects light poorly? (a) a mirror (b) black cloth (c) a shiny steel plate (d) aluminium foil
25. 25.True or false: a rough wooden board reflects light poorly. (a) True (b) False
26. 26.🔭 At what angle are the mirrors set in a simple periscope? (a) 45 degrees (b) 180 degrees (c) 10 degrees (d) 90 degrees
27. 27.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) still clear water (c) dark soil (d) a mirror
28. 28.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
29. 29.🔭 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
30. 30.⚖️ 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 same light (c) the same carton (d) how clear the view is
31. 31.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) nobody needs to (c) a grown-up (d) the youngest child
32. 32.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
33. 33.🔭 Which of these reflects light well? (a) a dull brick (b) aluminium foil (c) black cloth (d) a rough wooden board
34. 34.🛟 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
35. 35.⚖️ 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
36. 36.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is kept the same. (a) True (b) False
37. 37.🔍 Which is the odd one out? (a) dark soil (b) a dull brick (c) aluminium foil (d) a rough wooden board
38. 38.True or false: dark soil reflects light poorly. (a) False (b) True
39. 39.⚖️ 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
40. 40.🔍 Which is the odd one out? (a) a mirror (b) a shiny steel plate (c) black cloth (d) aluminium foil

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