Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 904 · 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? Which of these is what we measure? (a) the object we look at (b) how clear the view is (c) the same light (d) the angle of the mirrors
2. 2.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) a balloon (c) a pencil (d) a ruler
3. 3.🔭 How many times does light bounce off a mirror in a simple periscope?
4. 4.True or false: a balloon is not needed for the periscope. (a) False (b) True
5. 5.🔍 Which is the odd one out? (a) a mirror (b) a dull brick (c) still clear water (d) aluminium foil
6. 6.🔭 Which of these reflects light well? (a) a dull brick (b) dark soil (c) black cloth (d) a shiny steel plate
7. 7.🧺 Do we need a battery cell for the periscope? (a) not needed (b) needed
8. 8.🔭 How many mirrors does a simple periscope use?
9. 9.🔭 Why must the two mirrors face each other and be parallel? (a) so light reaches the eye (b) so it can float (c) to make it heavy (d) so it looks shiny
10. 10.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
11. 11.🔮 Predict: you cover the top mirror with paper. What do you see? (a) only darkness (b) two pictures (c) a brighter view (d) a rainbow
12. 12.🧺 Which of these is needed for the periscope? (a) a balloon (b) vinegar (c) an empty juice carton (d) a battery cell
13. 13.True or false: two small mirrors is not needed for the periscope. (a) False (b) True
14. 14.🧺 Which of these is needed for the periscope? (a) a balloon (b) a pencil (c) a battery cell (d) a magnet
15. 15.🔭 Which of these reflects light poorly? (a) still clear water (b) a shiny steel plate (c) black cloth (d) a mirror
16. 16.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a ruler (c) two small mirrors (d) a magnet
17. 17.True or false: yeast is not needed for the periscope. (a) False (b) True
18. 18.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) nothing at all (c) the ground (d) taller walls
19. 19.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
20. 20.🧺 Which of these is not needed for the periscope? (a) a battery cell (b) a pencil (c) a ruler (d) two small mirrors
21. 21.True or false: a dull brick reflects light poorly. (a) True (b) False
22. 22.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) a grown-up (c) nobody needs to (d) a friend who is running
23. 23.🔭 What does a periscope let you do? (a) see over a wall (b) see germs (c) hear far sounds (d) see in the dark
24. 24.⚖️ 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
25. 25.True or false: a pencil is needed for the periscope. (a) True (b) False
26. 26.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
27. 27.⚖️ 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 keep it the same (b) we change it (c) we measure it
28. 28.⚖️ 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 measure it (b) we keep it the same (c) we change it
29. 29.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a shiny steel plate (c) a mirror (d) dark soil
30. 30.⚖️ 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
31. 31.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) a wall (c) a tree (d) the Sun
32. 32.🔭 At what angle are the mirrors set in a simple periscope? (a) 180 degrees (b) 90 degrees (c) 45 degrees (d) 10 degrees
33. 33.⚖️ 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
34. 34.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) a balloon (c) sticky tape (d) a pencil
35. 35.🔍 Which is the odd one out? (a) dark soil (b) a shiny steel plate (c) a rough wooden board (d) black cloth
36. 36.🧺 Which of these is needed for the periscope? (a) a magnet (b) a battery cell (c) two small mirrors (d) a balloon
37. 37.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
38. 38.🧺 Which of these is needed for the periscope? (a) vinegar (b) a ruler (c) a magnet (d) turmeric powder
39. 39.🔭 Which of these reflects light well? (a) a rough wooden board (b) a mirror (c) a dull brick (d) black cloth
40. 40.⚖️ 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

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