Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 992 · 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.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 10 degrees (c) 45 degrees (d) 180 degrees
2. 2.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) loose glass panes (c) big wall mirrors (d) plastic safety mirrors
3. 3.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
4. 4.🔭 Which of these reflects light well? (a) a mirror (b) dark soil (c) black cloth (d) a rough wooden board
5. 5.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the angle of the mirrors (b) the object we look at (c) the same carton (d) the same mirrors
6. 6.⚖️ 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
7. 7.🔭 Which of these reflects light poorly? (a) a mirror (b) aluminium foil (c) still clear water (d) dark soil
8. 8.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) sticky tape (c) a pencil (d) vinegar
9. 9.🧺 Which of these is not needed for the periscope? (a) a pencil (b) a balloon (c) a ruler (d) an empty juice carton
10. 10.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) taller walls (b) only short walls (c) nothing at all (d) the ground
11. 11.🔭 Which of these reflects light well? (a) dark soil (b) black cloth (c) still clear water (d) a dull brick
12. 12.⚖️ 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
13. 13.🔍 Which is the odd one out? (a) a shiny steel plate (b) still clear water (c) a mirror (d) a rough wooden board
14. 14.🔭 How many times does light bounce off a mirror in a simple periscope?
15. 15.True or false: aluminium foil reflects light poorly. (a) True (b) False
16. 16.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
17. 17.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is what we measure. (a) True (b) False
18. 18.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same carton (b) how clear the view is (c) the object we look at (d) the same light
19. 19.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
20. 20.🔭 What does a periscope let you do? (a) see over a wall (b) see in the dark (c) see germs (d) hear far sounds
21. 21.🔍 Which is the odd one out? (a) dark soil (b) a dull brick (c) a rough wooden board (d) a shiny steel plate
22. 22.🔮 Predict: you cover the top mirror with paper. What do you see? (a) only darkness (b) a rainbow (c) two pictures (d) a brighter view
23. 23.True or false: a pencil is needed for the periscope. (a) False (b) True
24. 24.True or false: a rough wooden board reflects light well. (a) False (b) True
25. 25.⚖️ 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) True (b) False
26. 26.🧺 Do we need a balloon for the periscope? (a) not needed (b) needed
27. 27.True or false: a magnet is needed for the periscope. (a) False (b) True
28. 28.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
29. 29.True or false: a battery cell is needed for the periscope. (a) False (b) True
30. 30.True or false: still clear water reflects light poorly. (a) False (b) True
31. 31.⚖️ 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
32. 32.🔭 Which of these reflects light poorly? (a) a mirror (b) a shiny steel plate (c) black cloth (d) still clear water
33. 33.🔭 How many mirrors does a simple periscope use?
34. 34.True or false: a ruler is needed for the periscope. (a) True (b) False
35. 35.True or false: sticky tape is needed for the periscope. (a) True (b) False
36. 36.⚖️ 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) the same mirrors (c) how clear the view is
37. 37.🧺 Do we need sticky tape for the periscope? (a) needed (b) not needed
38. 38.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a friend’s toy (c) a wall (d) the Sun
39. 39.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) sticky tape (c) a magnet (d) two small mirrors
40. 40.🔍 Which is the odd one out? (a) a rough wooden board (b) a dull brick (c) still clear water (d) black cloth

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