Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 372 · 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.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) a friend who is running (c) a grown-up (d) nobody needs to
2. 2.⚖️ 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
3. 3.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) a friend’s toy (c) a tree (d) the Sun
4. 4.🧺 Do we need vinegar for the periscope? (a) not needed (b) needed
5. 5.🔭 How many times does light bounce off a mirror in a simple periscope?
6. 6.🔍 Which is the odd one out? (a) black cloth (b) still clear water (c) a mirror (d) aluminium foil
7. 7.True or false: a magnet is not needed for the periscope. (a) True (b) False
8. 8.⚖️ 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) True (b) False
9. 9.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a pencil (c) a ruler (d) a battery cell
10. 10.True or false: two small mirrors is needed for the periscope. (a) False (b) True
11. 11.True or false: sticky tape is not needed for the periscope. (a) True (b) False
12. 12.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
13. 13.🔭 How many mirrors does a simple periscope use?
14. 14.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) in colour (b) flipped left to right (c) upside down only (d) much bigger
15. 15.🔭 Does dark soil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
16. 16.⚖️ 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 same carton (c) the angle of the mirrors (d) the object we look at
17. 17.🧺 Which of these is not needed for the periscope? (a) a ruler (b) vinegar (c) two small mirrors (d) sticky tape
18. 18.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
19. 19.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) the ground (b) nothing at all (c) only short walls (d) taller walls
20. 20.⚖️ 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
21. 21.⚖️ 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 mirrors (c) the same carton (d) the same light
22. 22.⚖️ 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
23. 23.True or false: black cloth reflects light poorly. (a) False (b) True
24. 24.🧺 Which of these is needed for the periscope? (a) a battery cell (b) vinegar (c) two small mirrors (d) yeast
25. 25.⚖️ 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) how clear the view is (c) the same light
26. 26.🔭 Which of these reflects light well? (a) a dull brick (b) black cloth (c) a rough wooden board (d) a mirror
27. 27.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
28. 28.🔭 What does a periscope let you do? (a) see over a wall (b) hear far sounds (c) see germs (d) see in the dark
29. 29.🔭 Who uses a periscope to look above the water? (a) a pilot in a plane (b) a submarine crew (c) a farmer (d) a baker
30. 30.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
31. 31.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) only darkness (c) two pictures (d) a rainbow
32. 32.🔭 At what angle are the mirrors set in a simple periscope? (a) 45 degrees (b) 10 degrees (c) 180 degrees (d) 90 degrees
33. 33.🔍 Which is the odd one out? (a) dark soil (b) black cloth (c) still clear water (d) a dull brick
34. 34.⚖️ 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) False (b) True
35. 35.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) a battery cell (c) an empty juice carton (d) a ruler
36. 36.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a balloon (c) a pencil (d) sticky tape
37. 37.⚖️ 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
38. 38.True or false: still clear water reflects light well. (a) True (b) False
39. 39.🔭 Why must the two mirrors face each other and be parallel? (a) to make it heavy (b) so it can float (c) so light reaches the eye (d) so it looks shiny
40. 40.🔭 Which of these reflects light well? (a) a dull brick (b) dark soil (c) a rough wooden board (d) aluminium foil

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