Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 138 · 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 object we look at”? (a) we measure it (b) we change it (c) we keep it the same
2. 2.🔭 At what angle are the mirrors set in a simple periscope? (a) 180 degrees (b) 90 degrees (c) 10 degrees (d) 45 degrees
3. 3.True or false: a shiny steel plate reflects light poorly. (a) True (b) False
4. 4.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
5. 5.🛟 Who should cut the holes in the juice carton? (a) a grown-up (b) a friend who is running (c) the youngest child (d) nobody needs to
6. 6.⚖️ 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
7. 7.🔭 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
8. 8.📘 Light bouncing off a mirror is called ___. (a) magnetism (b) refraction (c) reflection (d) evaporation
9. 9.🔭 Which of these reflects light poorly? (a) a rough wooden board (b) a mirror (c) aluminium foil (d) a shiny steel plate
10. 10.🔍 Which is the odd one out? (a) still clear water (b) black cloth (c) a dull brick (d) dark soil
11. 11.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) vinegar (c) two small mirrors (d) a ruler
12. 12.🧺 Which of these is needed for the periscope? (a) a battery cell (b) sticky tape (c) a balloon (d) a magnet
13. 13.⚖️ 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) the same carton (c) how clear the view is
14. 14.⚖️ 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
15. 15.🧺 Which of these is not needed for the periscope? (a) a pencil (b) a ruler (c) a balloon (d) two small mirrors
16. 16.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) nothing at all (b) only short walls (c) the ground (d) taller walls
17. 17.⚖️ 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 light (c) the object we look at (d) the angle of the mirrors
18. 18.🔭 How many times does light bounce off a mirror in a simple periscope?
19. 19.⚖️ 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 keep it the same (b) we measure it (c) we change it
20. 20.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) an empty juice carton (c) two small mirrors (d) a balloon
21. 21.🧺 Which of these is needed for the periscope? (a) yeast (b) vinegar (c) a balloon (d) two small mirrors
22. 22.🧺 Which of these is needed for the periscope? (a) a battery cell (b) a magnet (c) turmeric powder (d) an empty juice carton
23. 23.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) a balloon (c) a ruler (d) yeast
24. 24.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) loose glass panes (c) plastic safety mirrors (d) broken glass bits
25. 25.True or false: vinegar is not needed for the periscope. (a) False (b) True
26. 26.🔭 Why must the two mirrors face each other and be parallel? (a) to make it heavy (b) so light reaches the eye (c) so it can float (d) so it looks shiny
27. 27.🔭 Which of these reflects light well? (a) black cloth (b) a dull brick (c) a rough wooden board (d) a shiny steel plate
28. 28.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) a dull brick (c) aluminium foil (d) still clear water
29. 29.🔭 How many mirrors does a simple periscope use?
30. 30.⚖️ 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 carton (c) the same mirrors (d) how clear the view is
31. 31.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
32. 32.🧺 Which of these is not needed for the periscope? (a) vinegar (b) a ruler (c) two small mirrors (d) an empty juice carton
33. 33.🔍 Which is the odd one out? (a) still clear water (b) a mirror (c) aluminium foil (d) black cloth
34. 34.⚖️ 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) False (b) True
35. 35.🧺 Which of these is needed for the periscope? (a) a balloon (b) vinegar (c) a pencil (d) a magnet
36. 36.True or false: aluminium foil reflects light well. (a) False (b) True
37. 37.True or false: a rough wooden board reflects light well. (a) True (b) False
38. 38.🔭 Which of these reflects light poorly? (a) dark soil (b) a shiny steel plate (c) a mirror (d) aluminium foil
39. 39.🔭 Does dark soil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
40. 40.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed

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