Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 951 · 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.🔭 How many times does light bounce off a mirror in a simple periscope?
2. 2.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) the Sun (c) a wall (d) a friend’s toy
3. 3.True or false: dark soil reflects light well. (a) False (b) True
4. 4.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
5. 5.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) vinegar (b) two small mirrors (c) sticky tape (d) an empty juice carton
6. 6.🛟 Who should cut the holes in the juice carton? (a) a grown-up (b) nobody needs to (c) a friend who is running (d) the youngest child
7. 7.True or false: a magnet is not needed for the periscope. (a) True (b) False
8. 8.True or false: a pencil is not needed for the periscope. (a) True (b) False
9. 9.🔭 Which of these reflects light poorly? (a) still clear water (b) black cloth (c) aluminium foil (d) a mirror
10. 10.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) sticky tape (c) a ruler (d) a battery cell
11. 11.🔭 Which of these reflects light well? (a) black cloth (b) a mirror (c) dark soil (d) a rough wooden board
12. 12.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
13. 13.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
14. 14.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) taller walls (b) nothing at all (c) only short walls (d) the ground
15. 15.🧺 Do we need vinegar for the periscope? (a) not needed (b) needed
16. 16.True or false: a dull brick reflects light poorly. (a) False (b) True
17. 17.🧺 Which of these is not needed for the periscope? (a) a ruler (b) sticky tape (c) two small mirrors (d) turmeric powder
18. 18.True or false: aluminium foil reflects light well. (a) True (b) False
19. 19.⚖️ 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 measure it (b) we keep it the same (c) we change it
20. 20.⚖️ 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
21. 21.True or false: black cloth reflects light poorly. (a) True (b) False
22. 22.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same mirrors (b) the same light (c) the object we look at (d) how clear the view is
23. 23.🔭 Why must the two mirrors face each other and be parallel? (a) so it can float (b) so it looks shiny (c) to make it heavy (d) so light reaches the eye
24. 24.🔭 How many mirrors does a simple periscope use?
25. 25.🧺 Which of these is needed for the periscope? (a) yeast (b) a battery cell (c) a magnet (d) sticky tape
26. 26.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) sticky tape (c) yeast (d) an empty juice carton
27. 27.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
28. 28.🔭 Which of these reflects light poorly? (a) a rough wooden board (b) still clear water (c) aluminium foil (d) a mirror
29. 29.True or false: a shiny steel plate reflects light well. (a) False (b) True
30. 30.⚖️ 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
31. 31.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
32. 32.⚖️ 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 keep it the same (b) we change it (c) we measure it
33. 33.🔍 Which is the odd one out? (a) black cloth (b) a shiny steel plate (c) a rough wooden board (d) dark soil
34. 34.🧺 Which of these is needed for the periscope? (a) vinegar (b) yeast (c) an empty juice carton (d) a battery cell
35. 35.True or false: a dull brick reflects light well. (a) True (b) False
36. 36.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
37. 37.⚖️ 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) True (b) False
38. 38.🧺 Which of these is needed for the periscope? (a) a magnet (b) a balloon (c) turmeric powder (d) a pencil
39. 39.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a pencil (c) turmeric powder (d) a ruler
40. 40.🔭 At what angle are the mirrors set in a simple periscope? (a) 180 degrees (b) 10 degrees (c) 90 degrees (d) 45 degrees

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