Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 389 · 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? True or false: how clear the view is is the one thing we change. (a) True (b) False
2. 2.🔍 Which is the odd one out? (a) dark soil (b) still clear water (c) black cloth (d) a rough wooden board
3. 3.True or false: black cloth reflects light poorly. (a) True (b) False
4. 4.🔭 Which of these reflects light poorly? (a) a mirror (b) black cloth (c) still clear water (d) aluminium foil
5. 5.🔭 How many times does light bounce off a mirror in a simple periscope?
6. 6.⚖️ 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
7. 7.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) the ground (b) taller walls (c) only short walls (d) nothing at all
8. 8.🔮 Predict: you cover the top mirror with paper. What do you see? (a) only darkness (b) a brighter view (c) a rainbow (d) two pictures
9. 9.⚖️ 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
10. 10.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
11. 11.⚖️ 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
12. 12.🧺 Which of these is needed for the periscope? (a) a magnet (b) an empty juice carton (c) a balloon (d) turmeric powder
13. 13.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a pencil (c) a balloon (d) a ruler
14. 14.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is kept the same. (a) False (b) True
15. 15.🔭 How many mirrors does a simple periscope use?
16. 16.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) an empty juice carton (c) sticky tape (d) yeast
17. 17.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is the one thing we change. (a) False (b) True
18. 18.True or false: a mirror reflects light poorly. (a) True (b) False
19. 19.🧺 Which of these is needed for the periscope? (a) yeast (b) a magnet (c) a balloon (d) two small mirrors
20. 20.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the angle of the mirrors (b) how clear the view is (c) the same carton
21. 21.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) plastic safety mirrors (c) big wall mirrors (d) broken glass bits
22. 22.🔭 Who uses a periscope to look above the water? (a) a pilot in a plane (b) a farmer (c) a submarine crew (d) a baker
23. 23.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
24. 24.True or false: dark soil reflects light well. (a) True (b) False
25. 25.True or false: turmeric powder is not needed for the periscope. (a) True (b) False
26. 26.True or false: a pencil is needed for the periscope. (a) False (b) True
27. 27.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
28. 28.🔍 Which is the odd one out? (a) a rough wooden board (b) a shiny steel plate (c) a mirror (d) aluminium foil
29. 29.🔭 At what angle are the mirrors set in a simple periscope? (a) 45 degrees (b) 90 degrees (c) 180 degrees (d) 10 degrees
30. 30.🧺 Do we need yeast for the periscope? (a) not needed (b) needed
31. 31.⚖️ 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 measure it (c) we keep it the same
32. 32.🔍 Which is the odd one out? (a) a mirror (b) aluminium foil (c) dark soil (d) still clear water
33. 33.🔭 Which of these reflects light poorly? (a) still clear water (b) a dull brick (c) a mirror (d) a shiny steel plate
34. 34.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
35. 35.⚖️ 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
36. 36.True or false: vinegar is not needed for the periscope. (a) False (b) True
37. 37.🧺 Do we need vinegar for the periscope? (a) not needed (b) needed
38. 38.⚖️ 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 change it (b) we keep it the same (c) we measure it
39. 39.📘 Light bouncing off a mirror is called ___. (a) evaporation (b) refraction (c) magnetism (d) reflection
40. 40.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) an empty juice carton (c) a magnet (d) sticky tape

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