Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 840 · 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.🔭 What does a periscope let you do? (a) see in the dark (b) hear far sounds (c) see over a wall (d) see germs
2. 2.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
3. 3.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
4. 4.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) a ruler (c) a magnet (d) an empty juice carton
5. 5.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we change it (b) we keep it the same (c) we measure it
6. 6.🔭 Which of these reflects light poorly? (a) dark soil (b) a mirror (c) a shiny steel plate (d) still clear water
7. 7.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a magnet (b) sticky tape (c) a pencil (d) a ruler
8. 8.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we keep it the same (b) we change it (c) we measure it
9. 9.🔭 How many times does light bounce off a mirror in a simple periscope?
10. 10.🔭 How many mirrors does a simple periscope use?
11. 11.🧺 Which of these is needed for the periscope? (a) sticky tape (b) a battery cell (c) turmeric powder (d) yeast
12. 12.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
13. 13.🧺 Which of these is needed for the periscope? (a) a balloon (b) a battery cell (c) vinegar (d) two small mirrors
14. 14.True or false: sticky tape is needed for the periscope. (a) True (b) False
15. 15.⚖️ 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
16. 16.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) an empty juice carton (c) a balloon (d) two small mirrors
17. 17.🧺 Do we need a pencil for the periscope? (a) not needed (b) needed
18. 18.True or false: a rough wooden board reflects light well. (a) False (b) True
19. 19.🧺 Which of these is not needed for the periscope? (a) a balloon (b) two small mirrors (c) an empty juice carton (d) a pencil
20. 20.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) flipped left to right (c) in colour (d) upside down only
21. 21.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is kept the same. (a) True (b) False
22. 22.⚖️ 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
23. 23.⚖️ 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 same light (d) the angle of the mirrors
24. 24.🔭 Which of these reflects light well? (a) black cloth (b) a rough wooden board (c) a shiny steel plate (d) a dull brick
25. 25.🔭 Why must the two mirrors face each other and be parallel? (a) so light reaches the eye (b) so it looks shiny (c) to make it heavy (d) so it can float
26. 26.True or false: a balloon is not needed for the periscope. (a) True (b) False
27. 27.🧺 Do we need yeast for the periscope? (a) not needed (b) needed
28. 28.⚖️ 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
29. 29.🔭 Which of these reflects light well? (a) a mirror (b) black cloth (c) a dull brick (d) dark soil
30. 30.⚖️ 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
31. 31.⚖️ 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 same light (d) how clear the view is
32. 32.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
33. 33.True or false: sticky tape is not needed for the periscope. (a) False (b) True
34. 34.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) taller walls (b) the ground (c) nothing at all (d) only short walls
35. 35.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
36. 36.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
37. 37.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
38. 38.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
39. 39.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 10 degrees (c) 45 degrees (d) 180 degrees
40. 40.🔍 Which is the odd one out? (a) dark soil (b) a dull brick (c) black cloth (d) aluminium foil

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