Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 256 · 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.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) vinegar (c) a pencil (d) two small mirrors
2. 2.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
3. 3.⚖️ 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
4. 4.True or false: a battery cell is needed for the periscope. (a) True (b) False
5. 5.⚖️ 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
6. 6.🔮 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
7. 7.⚖️ 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 keep it the same (c) we measure it
8. 8.True or false: a dull brick reflects light well. (a) False (b) True
9. 9.🔍 Which is the odd one out? (a) still clear water (b) a shiny steel plate (c) a mirror (d) a dull brick
10. 10.🧺 Which of these is needed for the periscope? (a) a battery cell (b) vinegar (c) two small mirrors (d) turmeric powder
11. 11.🔭 At what angle are the mirrors set in a simple periscope? (a) 180 degrees (b) 45 degrees (c) 90 degrees (d) 10 degrees
12. 12.📘 Light bouncing off a mirror is called ___. (a) evaporation (b) refraction (c) magnetism (d) reflection
13. 13.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) how clear the view is (b) the same carton (c) the angle of the mirrors
14. 14.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) a pencil (c) a balloon (d) sticky tape
15. 15.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) how clear the view is (b) the same carton (c) the same light (d) the object we look at
16. 16.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
17. 17.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) taller walls (c) nothing at all (d) the ground
18. 18.🧺 Which of these is not needed for the periscope? (a) a balloon (b) a pencil (c) an empty juice carton (d) sticky tape
19. 19.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
20. 20.True or false: sticky tape is not needed for the periscope. (a) True (b) False
21. 21.🔭 What does a periscope let you do? (a) hear far sounds (b) see germs (c) see in the dark (d) see over a wall
22. 22.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) yeast (c) sticky tape (d) two small mirrors
23. 23.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) a grown-up (c) nobody needs to (d) a friend who is running
24. 24.🔭 How many times does light bounce off a mirror in a simple periscope?
25. 25.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a pencil (c) a ruler (d) a battery cell
26. 26.True or false: a magnet is not needed for the periscope. (a) False (b) True
27. 27.🔭 Which of these reflects light poorly? (a) dark soil (b) still clear water (c) aluminium foil (d) a mirror
28. 28.🧺 Do we need a magnet for the periscope? (a) not needed (b) needed
29. 29.⚖️ 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 change it (c) we measure it
30. 30.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well
31. 31.⚖️ 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
32. 32.⚖️ 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 light (c) the angle of the mirrors (d) the same carton
33. 33.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
34. 34.🔍 Which is the odd one out? (a) a shiny steel plate (b) still clear water (c) a mirror (d) black cloth
35. 35.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is what we measure. (a) False (b) True
36. 36.⚖️ 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) False (b) True
37. 37.True or false: black cloth reflects light poorly. (a) False (b) True
38. 38.True or false: a magnet is needed for the periscope. (a) True (b) False
39. 39.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is kept the same. (a) True (b) False
40. 40.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed

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