Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 327 · 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 what we measure? (a) the angle of the mirrors (b) the same mirrors (c) how clear the view is (d) the same light
2. 2.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) vinegar (c) a balloon (d) a ruler
3. 3.🔍 Which is the odd one out? (a) black cloth (b) aluminium foil (c) a dull brick (d) a rough wooden board
4. 4.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) the Sun (c) a wall (d) a friend’s toy
5. 5.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) plastic safety mirrors (c) broken glass bits (d) loose glass panes
6. 6.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
7. 7.🔭 How many times does light bounce off a mirror in a simple periscope?
8. 8.🔭 How many mirrors does a simple periscope use?
9. 9.🔭 Which of these reflects light poorly? (a) aluminium foil (b) black cloth (c) still clear water (d) a mirror
10. 10.📘 Light bouncing off a mirror is called ___. (a) magnetism (b) evaporation (c) reflection (d) refraction
11. 11.🔍 Which is the odd one out? (a) dark soil (b) a rough wooden board (c) a mirror (d) black cloth
12. 12.⚖️ 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) True (b) False
13. 13.True or false: still clear water reflects light poorly. (a) False (b) True
14. 14.🔭 What does a periscope let you do? (a) see germs (b) hear far sounds (c) see in the dark (d) see over a wall
15. 15.🔭 Which of these reflects light poorly? (a) a rough wooden board (b) aluminium foil (c) still clear water (d) a shiny steel plate
16. 16.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) the ground (b) taller walls (c) nothing at all (d) only short walls
17. 17.⚖️ 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
18. 18.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 180 degrees (c) 90 degrees (d) 45 degrees
19. 19.🔭 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
20. 20.True or false: a magnet is not needed for the periscope. (a) False (b) True
21. 21.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is what we measure. (a) True (b) False
22. 22.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we change it (b) we keep it the same (c) we measure it
23. 23.🧺 Which of these is not needed for the periscope? (a) yeast (b) two small mirrors (c) a pencil (d) sticky tape
24. 24.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the angle of the mirrors (b) the same light (c) the same mirrors (d) the same carton
25. 25.⚖️ 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 change it (b) we keep it the same (c) we measure it
26. 26.True or false: turmeric powder is not needed for the periscope. (a) True (b) False
27. 27.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) much bigger (c) in colour (d) flipped left to right
28. 28.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
29. 29.🔭 Which of these reflects light poorly? (a) still clear water (b) a mirror (c) a shiny steel plate (d) a dull brick
30. 30.True or false: a mirror reflects light poorly. (a) False (b) True
31. 31.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
32. 32.True or false: a magnet is needed for the periscope. (a) True (b) False
33. 33.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we keep it the same (b) we change it (c) we measure it
34. 34.True or false: aluminium foil reflects light poorly. (a) True (b) False
35. 35.True or false: aluminium foil reflects light well. (a) False (b) True
36. 36.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
37. 37.🧺 Which of these is needed for the periscope? (a) vinegar (b) yeast (c) two small mirrors (d) a magnet
38. 38.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a ruler (c) two small mirrors (d) vinegar
39. 39.🔭 Which of these reflects light well? (a) a dull brick (b) aluminium foil (c) black cloth (d) a rough wooden board
40. 40.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) an empty juice carton (c) a pencil (d) yeast

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