Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 748 · 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.🔮 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
2. 2.🔭 Which of these reflects light poorly? (a) aluminium foil (b) dark soil (c) a shiny steel plate (d) a mirror
3. 3.🔍 Which is the odd one out? (a) dark soil (b) a rough wooden board (c) black cloth (d) a mirror
4. 4.🔭 Who uses a periscope to look above the water? (a) a pilot in a plane (b) a farmer (c) a baker (d) a submarine crew
5. 5.⚖️ 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 object we look at (c) the same light (d) the same mirrors
6. 6.⚖️ 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 object we look at (c) the same mirrors (d) the angle of the mirrors
7. 7.🧺 Which of these is not needed for the periscope? (a) a ruler (b) a pencil (c) vinegar (d) two small mirrors
8. 8.🔭 What does a periscope let you do? (a) hear far sounds (b) see over a wall (c) see germs (d) see in the dark
9. 9.⚖️ 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 change it (c) we keep it the same
10. 10.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is what we measure. (a) True (b) False
11. 11.⚖️ 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
12. 12.🔭 Which of these reflects light poorly? (a) a dull brick (b) a shiny steel plate (c) a mirror (d) still clear water
13. 13.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
14. 14.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
15. 15.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) the youngest child (c) a grown-up (d) nobody needs to
16. 16.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
17. 17.True or false: yeast is needed for the periscope. (a) True (b) False
18. 18.True or false: black cloth reflects light poorly. (a) True (b) False
19. 19.True or false: a magnet is not needed for the periscope. (a) False (b) True
20. 20.🔭 Why must the two mirrors face each other and be parallel? (a) so it can float (b) to make it heavy (c) so it looks shiny (d) so light reaches the eye
21. 21.⚖️ 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 change it (c) we measure it
22. 22.True or false: black cloth reflects light well. (a) True (b) False
23. 23.🔭 How many times does light bounce off a mirror in a simple periscope?
24. 24.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we keep it the same (b) we change it (c) we measure it
25. 25.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) two small mirrors (c) a balloon (d) sticky tape
26. 26.🧺 Do we need a pencil for the periscope? (a) needed (b) not needed
27. 27.True or false: a balloon is not needed for the periscope. (a) True (b) False
28. 28.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is kept the same. (a) False (b) True
29. 29.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) vinegar (b) an empty juice carton (c) two small mirrors (d) sticky tape
30. 30.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
31. 31.🛟 You must never point a periscope or a mirror at ___. (a) the Sun (b) a friend’s toy (c) a tree (d) a wall
32. 32.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) a ruler (c) a magnet (d) vinegar
33. 33.⚖️ 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) False (b) True
34. 34.True or false: a pencil is not needed for the periscope. (a) True (b) False
35. 35.🧺 Which of these is needed for the periscope? (a) a magnet (b) turmeric powder (c) an empty juice carton (d) a balloon
36. 36.🔍 Which is the odd one out? (a) a dull brick (b) dark soil (c) black cloth (d) a shiny steel plate
37. 37.🔭 How many mirrors does a simple periscope use?
38. 38.🔭 At what angle are the mirrors set in a simple periscope? (a) 180 degrees (b) 10 degrees (c) 90 degrees (d) 45 degrees
39. 39.True or false: sticky tape is needed for the periscope. (a) True (b) False
40. 40.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) only darkness (c) a rainbow (d) two pictures

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