Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 681 · 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 light”? (a) we change it (b) we keep it the same (c) we measure it
2. 2.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) a dull brick (c) still clear water (d) a mirror
3. 3.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) big wall mirrors (c) loose glass panes (d) plastic safety mirrors
4. 4.⚖️ 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) how clear the view is (c) the same mirrors (d) the angle of the mirrors
5. 5.🧺 Which of these is needed for the periscope? (a) vinegar (b) turmeric powder (c) a balloon (d) two small mirrors
6. 6.🔭 Which of these reflects light well? (a) dark soil (b) black cloth (c) a shiny steel plate (d) a rough wooden board
7. 7.🔮 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
8. 8.⚖️ 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
9. 9.🔍 Which is the odd one out? (a) a shiny steel plate (b) still clear water (c) a mirror (d) a rough wooden board
10. 10.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we keep it the same (b) we measure it (c) we change it
11. 11.⚖️ 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 measure it (b) we keep it the same (c) we change it
12. 12.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a mirror (c) a shiny steel plate (d) a rough wooden board
13. 13.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
14. 14.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a magnet (c) a ruler (d) a pencil
15. 15.📘 Light bouncing off a mirror is called ___. (a) magnetism (b) reflection (c) evaporation (d) refraction
16. 16.⚖️ 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) the object we look at (c) the angle of the mirrors (d) the same mirrors
17. 17.🔍 Which is the odd one out? (a) a dull brick (b) a mirror (c) a rough wooden board (d) black cloth
18. 18.🧺 Which of these is not needed for the periscope? (a) a ruler (b) a magnet (c) a pencil (d) two small mirrors
19. 19.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
20. 20.⚖️ 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
21. 21.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
22. 22.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
23. 23.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) taller walls (b) nothing at all (c) the ground (d) only short walls
24. 24.🧺 Which of these is needed for the periscope? (a) an empty juice carton (b) a balloon (c) a magnet (d) vinegar
25. 25.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) flipped left to right (b) much bigger (c) in colour (d) upside down only
26. 26.🔭 Which of these reflects light well? (a) a dull brick (b) still clear water (c) a rough wooden board (d) black cloth
27. 27.🔭 At what angle are the mirrors set in a simple periscope? (a) 45 degrees (b) 10 degrees (c) 180 degrees (d) 90 degrees
28. 28.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
29. 29.🔭 What does a periscope let you do? (a) see germs (b) hear far sounds (c) see in the dark (d) see over a wall
30. 30.True or false: vinegar is not needed for the periscope. (a) True (b) False
31. 31.🔭 How many mirrors does a simple periscope use?
32. 32.🔭 Which of these reflects light well? (a) dark soil (b) black cloth (c) a rough wooden board (d) aluminium foil
33. 33.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
34. 34.🔭 How many times does light bounce off a mirror in a simple periscope?
35. 35.🔍 Which is the odd one out? (a) a shiny steel plate (b) aluminium foil (c) a dull brick (d) a mirror
36. 36.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed
37. 37.🔭 Which of these reflects light well? (a) a dull brick (b) dark soil (c) a mirror (d) a rough wooden board
38. 38.True or false: an empty juice carton is needed for the periscope. (a) False (b) True
39. 39.True or false: a battery cell is needed for the periscope. (a) True (b) False
40. 40.🔭 Does dark soil reflect light well or poorly? (a) reflects light poorly (b) reflects light well

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