Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 678 · 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) yeast (b) turmeric powder (c) an empty juice carton (d) a battery cell
2. 2.🔍 Which is the odd one out? (a) black cloth (b) dark soil (c) still clear water (d) a rough wooden board
3. 3.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) sticky tape (c) an empty juice carton (d) turmeric powder
4. 4.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we keep it the same (b) we change it (c) we measure it
5. 5.🔮 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
6. 6.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) vinegar (c) an empty juice carton (d) a pencil
7. 7.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same mirrors (b) the angle of the mirrors (c) how clear the view is
8. 8.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) the Sun (c) a wall (d) a friend’s toy
9. 9.🔭 Why must the two mirrors face each other and be parallel? (a) so it can float (b) so light reaches the eye (c) so it looks shiny (d) to make it heavy
10. 10.⚖️ 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 mirrors (b) the angle of the mirrors (c) the object we look at (d) the same carton
11. 11.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
12. 12.⚖️ 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 measure it (c) we keep it the same
13. 13.🔭 Which of these reflects light poorly? (a) still clear water (b) a shiny steel plate (c) dark soil (d) aluminium foil
14. 14.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we measure it (b) we change it (c) we keep it the same
15. 15.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
16. 16.🔭 How many times does light bounce off a mirror in a simple periscope?
17. 17.🔍 Which is the odd one out? (a) aluminium foil (b) still clear water (c) dark soil (d) a shiny steel plate
18. 18.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 10 degrees (c) 45 degrees (d) 180 degrees
19. 19.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is what we measure. (a) True (b) False
20. 20.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) how clear the view is (b) the same carton (c) the angle of the mirrors (d) the same light
21. 21.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) only darkness (c) a brighter view (d) two pictures
22. 22.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well
23. 23.🔭 What does a periscope let you do? (a) see germs (b) see in the dark (c) see over a wall (d) hear far sounds
24. 24.⚖️ 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
25. 25.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
26. 26.🔭 Which of these reflects light well? (a) a mirror (b) a rough wooden board (c) black cloth (d) dark soil
27. 27.True or false: a balloon is not needed for the periscope. (a) False (b) True
28. 28.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is kept the same. (a) True (b) False
29. 29.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) sticky tape (c) a ruler (d) turmeric powder
30. 30.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a battery cell (c) two small mirrors (d) sticky tape
31. 31.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is the one thing we change. (a) False (b) True
32. 32.True or false: a mirror reflects light poorly. (a) True (b) False
33. 33.🔭 Which of these reflects light well? (a) a dull brick (b) dark soil (c) a rough wooden board (d) a shiny steel plate
34. 34.🧺 Do we need sticky tape for the periscope? (a) needed (b) not needed
35. 35.True or false: a dull brick reflects light well. (a) False (b) True
36. 36.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
37. 37.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a balloon (b) a pencil (c) an empty juice carton (d) a ruler
38. 38.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
39. 39.🧺 Which of these is not needed for the periscope? (a) a pencil (b) two small mirrors (c) an empty juice carton (d) a magnet
40. 40.True or false: a pencil is not needed for the periscope. (a) True (b) False

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