Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 899 · 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 reflects light well? (a) a rough wooden board (b) still clear water (c) dark soil (d) a dull brick
2. 2.⚖️ 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
3. 3.True or false: aluminium foil reflects light poorly. (a) True (b) False
4. 4.🧺 Which of these is needed for the periscope? (a) yeast (b) a battery cell (c) turmeric powder (d) two small mirrors
5. 5.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) loose glass panes (c) broken glass bits (d) plastic safety mirrors
6. 6.⚖️ 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
7. 7.⚖️ 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
8. 8.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) two small mirrors (c) a magnet (d) a pencil
9. 9.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is the one thing we change. (a) False (b) True
10. 10.📘 Light bouncing off a mirror is called ___. (a) reflection (b) refraction (c) magnetism (d) evaporation
11. 11.🔭 Why must the two mirrors face each other and be parallel? (a) so it looks shiny (b) so it can float (c) to make it heavy (d) so light reaches the eye
12. 12.🧺 Which of these is needed for the periscope? (a) a battery cell (b) a magnet (c) sticky tape (d) a balloon
13. 13.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a balloon (b) sticky tape (c) a ruler (d) a pencil
14. 14.⚖️ 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 keep it the same (c) we measure it
15. 15.⚖️ 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
16. 16.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
17. 17.🛟 Who should cut the holes in the juice carton? (a) a grown-up (b) the youngest child (c) a friend who is running (d) nobody needs to
18. 18.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
19. 19.True or false: a battery cell is not needed for the periscope. (a) True (b) False
20. 20.True or false: a shiny steel plate reflects light well. (a) True (b) False
21. 21.🔭 How many times does light bounce off a mirror in a simple periscope?
22. 22.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
23. 23.True or false: yeast is not needed for the periscope. (a) True (b) False
24. 24.🧺 Do we need sticky tape for the periscope? (a) needed (b) not needed
25. 25.🧺 Do we need yeast for the periscope? (a) not needed (b) needed
26. 26.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) a friend’s toy (c) a tree (d) the Sun
27. 27.🧺 Do we need a pencil for the periscope? (a) not needed (b) needed
28. 28.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
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 keep it the same (c) we measure it
30. 30.⚖️ 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 light (b) the same mirrors (c) the angle of the mirrors (d) the object we look at
31. 31.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) the ground (b) nothing at all (c) taller walls (d) only short walls
32. 32.🔍 Which is the odd one out? (a) a rough wooden board (b) a shiny steel plate (c) a mirror (d) still clear water
33. 33.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
34. 34.🔍 Which is the odd one out? (a) a rough wooden board (b) black cloth (c) aluminium foil (d) dark soil
35. 35.⚖️ 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) True (b) False
36. 36.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) yeast (c) a ruler (d) a pencil
37. 37.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is kept the same. (a) False (b) True
38. 38.🔭 At what angle are the mirrors set in a simple periscope? (a) 180 degrees (b) 10 degrees (c) 45 degrees (d) 90 degrees
39. 39.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
40. 40.🧺 Which of these is not needed for the periscope? (a) vinegar (b) an empty juice carton (c) a pencil (d) sticky tape

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