Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 722 · 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? What do we do with “the same mirrors”? (a) we change it (b) we measure it (c) we keep it the same
2. 2.🔮 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
3. 3.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
4. 4.⚖️ 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 angle of the mirrors (c) the same mirrors (d) how clear the view is
5. 5.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) flipped left to right (b) in colour (c) upside down only (d) much bigger
6. 6.🛟 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
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 light (b) the angle of the mirrors (c) how clear the view is
8. 8.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) a grown-up (c) nobody needs to (d) the youngest child
9. 9.True or false: a shiny steel plate reflects light poorly. (a) True (b) False
10. 10.True or false: an empty juice carton is needed for the periscope. (a) False (b) True
11. 11.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
12. 12.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 180 degrees (c) 10 degrees (d) 45 degrees
13. 13.🔭 How many times does light bounce off a mirror in a simple periscope?
14. 14.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we measure it (b) we change it (c) we keep it the same
15. 15.True or false: dark soil reflects light poorly. (a) False (b) True
16. 16.🔍 Which is the odd one out? (a) a shiny steel plate (b) dark soil (c) a rough wooden board (d) black cloth
17. 17.True or false: an empty juice carton is not needed for the periscope. (a) True (b) False
18. 18.🔭 Which of these reflects light well? (a) a mirror (b) dark soil (c) black cloth (d) a rough wooden board
19. 19.🔭 Why must the two mirrors face each other and be parallel? (a) so it can float (b) so light reaches the eye (c) so it looks shiny (d) to make it heavy
20. 20.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) yeast (c) sticky tape (d) an empty juice carton
21. 21.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we keep it the same (b) we measure it (c) we change it
22. 22.True or false: a mirror reflects light poorly. (a) False (b) True
23. 23.🔭 How many mirrors does a simple periscope use?
24. 24.True or false: aluminium foil reflects light poorly. (a) True (b) False
25. 25.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is what we measure. (a) False (b) True
26. 26.🛟 You must never point a periscope or a mirror at ___. (a) the Sun (b) a friend’s toy (c) a tree (d) a wall
27. 27.🔭 What does a periscope let you do? (a) see in the dark (b) see germs (c) see over a wall (d) hear far sounds
28. 28.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) aluminium foil (c) a mirror (d) a rough wooden board
29. 29.🔭 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
30. 30.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
31. 31.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) turmeric powder (c) sticky tape (d) two small mirrors
32. 32.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) vinegar (c) sticky tape (d) a ruler
33. 33.🧺 Do we need a magnet for the periscope? (a) not needed (b) needed
34. 34.True or false: black cloth reflects light poorly. (a) True (b) False
35. 35.🧺 Do we need sticky tape for the periscope? (a) needed (b) not needed
36. 36.🔍 Which is the odd one out? (a) black cloth (b) a dull brick (c) a rough wooden board (d) still clear water
37. 37.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
38. 38.⚖️ 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
39. 39.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is what we measure. (a) True (b) False
40. 40.True or false: turmeric powder is needed for the periscope. (a) False (b) True

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