Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 451 · 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 reflects light poorly? (a) still clear water (b) black cloth (c) a mirror (d) aluminium foil
2. 2.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) taller walls (c) nothing at all (d) the ground
3. 3.🔭 Who uses a periscope to look above the water? (a) a baker (b) a farmer (c) a submarine crew (d) a pilot in a plane
4. 4.🔮 Predict: you cover the top mirror with paper. What do you see? (a) only darkness (b) a rainbow (c) a brighter view (d) two pictures
5. 5.True or false: a dull brick reflects light poorly. (a) False (b) True
6. 6.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we measure it (b) we keep it the same (c) we change it
7. 7.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
8. 8.True or false: a battery cell is not needed for the periscope. (a) True (b) False
9. 9.⚖️ 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 measure it (c) we change it
10. 10.⚖️ 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
11. 11.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) a ruler (c) yeast (d) an empty juice carton
12. 12.⚖️ 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
13. 13.⚖️ 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 angle of the mirrors (c) how clear the view is (d) the same carton
14. 14.⚖️ 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) True (b) False
15. 15.🧺 Which of these is needed for the periscope? (a) a magnet (b) an empty juice carton (c) a battery cell (d) vinegar
16. 16.🔍 Which is the odd one out? (a) a dull brick (b) still clear water (c) a mirror (d) a shiny steel plate
17. 17.🔭 What does a periscope let you do? (a) see over a wall (b) hear far sounds (c) see in the dark (d) see germs
18. 18.True or false: a magnet is not needed for the periscope. (a) True (b) False
19. 19.🛟 Which mirrors are safest for a children’s periscope? (a) plastic safety mirrors (b) broken glass bits (c) loose glass panes (d) big wall mirrors
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 carton (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 kept the same? (a) the object we look at (b) how clear the view is (c) the angle of the mirrors
22. 22.True or false: aluminium foil reflects light poorly. (a) False (b) True
23. 23.🧺 Do we need a balloon for the periscope? (a) not needed (b) needed
24. 24.🔍 Which is the odd one out? (a) a rough wooden board (b) dark soil (c) black cloth (d) a shiny steel plate
25. 25.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
26. 26.True or false: a shiny steel plate reflects light well. (a) False (b) True
27. 27.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
28. 28.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) nobody needs to (c) a grown-up (d) a friend who is running
29. 29.🧺 Do we need a pencil for the periscope? (a) not needed (b) needed
30. 30.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
31. 31.True or false: yeast is not needed for the periscope. (a) True (b) False
32. 32.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is the one thing we change. (a) True (b) False
33. 33.🔭 How many mirrors does a simple periscope use?
34. 34.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we change it (b) we keep it the same (c) we measure it
35. 35.True or false: still clear water reflects light well. (a) True (b) False
36. 36.🔭 Which of these reflects light well? (a) a dull brick (b) dark soil (c) black cloth (d) aluminium foil
37. 37.🔭 How many times does light bounce off a mirror in a simple periscope?
38. 38.True or false: an empty juice carton is not needed for the periscope. (a) True (b) False
39. 39.🧺 Which of these is needed for the periscope? (a) a battery cell (b) a balloon (c) a ruler (d) a magnet
40. 40.🛟 You must never point a periscope or a mirror at ___. (a) the Sun (b) a tree (c) a friend’s toy (d) a wall

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