Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 445 · 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.🧺 Which of these is needed for the periscope? (a) a balloon (b) turmeric powder (c) yeast (d) two small mirrors
2. 2.True or false: aluminium foil reflects light well. (a) False (b) True
3. 3.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a magnet (b) an empty juice carton (c) a ruler (d) sticky tape
4. 4.True or false: a ruler is needed for the periscope. (a) False (b) True
5. 5.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) plastic safety mirrors (c) big wall mirrors (d) loose glass panes
6. 6.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) turmeric powder (c) an empty juice carton (d) a pencil
7. 7.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) two pictures (c) only darkness (d) a rainbow
8. 8.⚖️ 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 keep it the same (c) we measure it
9. 9.🧺 Which of these is not needed for the periscope? (a) yeast (b) a pencil (c) two small mirrors (d) sticky tape
10. 10.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) an empty juice carton (c) vinegar (d) a ruler
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 change it (b) we keep it the same (c) we measure it
12. 12.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is kept the same. (a) True (b) False
13. 13.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a pencil (c) sticky tape (d) yeast
14. 14.🔭 How many mirrors does a simple periscope use?
15. 15.⚖️ 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
16. 16.📘 Light bouncing off a mirror is called ___. (a) evaporation (b) magnetism (c) refraction (d) reflection
17. 17.True or false: a dull brick reflects light poorly. (a) True (b) False
18. 18.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
19. 19.🔭 Which of these reflects light well? (a) a dull brick (b) black cloth (c) dark soil (d) a mirror
20. 20.🔍 Which is the odd one out? (a) a mirror (b) black cloth (c) a shiny steel plate (d) still clear water
21. 21.🧺 Do we need a battery cell for the periscope? (a) not needed (b) needed
22. 22.🔭 How many times does light bounce off a mirror in a simple periscope?
23. 23.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 90 degrees (c) 45 degrees (d) 180 degrees
24. 24.True or false: a battery cell is needed for the periscope. (a) False (b) True
25. 25.🧺 Which of these is needed for the periscope? (a) a balloon (b) a magnet (c) a ruler (d) turmeric powder
26. 26.⚖️ 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
27. 27.🧺 Do we need sticky tape for the periscope? (a) needed (b) not needed
28. 28.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) how clear the view is (b) the same mirrors (c) the angle of the mirrors (d) the object we look at
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 change it (b) we measure it (c) we keep it the same
30. 30.🧺 Do we need a ruler 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 same light”? (a) we measure it (b) we change it (c) we keep it the same
32. 32.⚖️ 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 light (c) the angle of the mirrors
33. 33.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
34. 34.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) aluminium foil (c) dark soil (d) a mirror
35. 35.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) taller walls (b) the ground (c) only short walls (d) nothing at all
36. 36.🔍 Which is the odd one out? (a) dark soil (b) a shiny steel plate (c) black cloth (d) a dull brick
37. 37.🔭 Who uses a periscope to look above the water? (a) a submarine crew (b) a pilot in a plane (c) a farmer (d) a baker
38. 38.True or false: a shiny steel plate reflects light well. (a) False (b) True
39. 39.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) a battery cell (c) sticky tape (d) an empty juice carton
40. 40.🔍 Which is the odd one out? (a) a rough wooden board (b) black cloth (c) a mirror (d) a dull brick

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