Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 755 · 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.⚖️ 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
2. 2.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) a pencil (c) sticky tape (d) a magnet
3. 3.🔭 How many times does light bounce off a mirror in a simple periscope?
4. 4.🔭 At what angle are the mirrors set in a simple periscope? (a) 180 degrees (b) 10 degrees (c) 45 degrees (d) 90 degrees
5. 5.🔮 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
6. 6.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is kept the same. (a) False (b) True
7. 7.True or false: black cloth reflects light well. (a) False (b) True
8. 8.🧺 Which of these is needed for the periscope? (a) a battery cell (b) a magnet (c) sticky tape (d) vinegar
9. 9.True or false: a balloon is needed for the periscope. (a) True (b) False
10. 10.True or false: a balloon is not needed for the periscope. (a) True (b) False
11. 11.True or false: a dull brick reflects light well. (a) False (b) True
12. 12.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) sticky tape (c) a battery cell (d) an empty juice carton
13. 13.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we measure it (b) we keep it the same (c) we change it
14. 14.🔭 What does a periscope let you do? (a) see germs (b) see over a wall (c) see in the dark (d) hear far sounds
15. 15.⚖️ 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 object we look at (c) how clear the view is (d) the same light
16. 16.True or false: still clear water reflects light well. (a) True (b) False
17. 17.⚖️ 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 measure it (b) we keep it the same (c) we change it
18. 18.🔭 Who uses a periscope to look above the water? (a) a submarine crew (b) a baker (c) a farmer (d) a pilot in a plane
19. 19.🔭 Which of these reflects light well? (a) a rough wooden board (b) dark soil (c) a dull brick (d) aluminium foil
20. 20.⚖️ 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) False (b) True
21. 21.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is what we measure. (a) True (b) False
22. 22.🔭 Which of these reflects light poorly? (a) a dull brick (b) aluminium foil (c) a mirror (d) a shiny steel plate
23. 23.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is what we measure. (a) True (b) False
24. 24.🔭 How many mirrors does a simple periscope use?
25. 25.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) a ruler (c) vinegar (d) sticky tape
26. 26.True or false: two small mirrors is needed for the periscope. (a) False (b) True
27. 27.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) a pencil (c) sticky tape (d) yeast
28. 28.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is kept the same. (a) True (b) False
29. 29.⚖️ 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 change it (b) we keep it the same (c) we measure it
30. 30.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a ruler (c) yeast (d) a pencil
31. 31.📘 Light bouncing off a mirror is called ___. (a) evaporation (b) magnetism (c) refraction (d) reflection
32. 32.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
33. 33.🔍 Which is the odd one out? (a) a rough wooden board (b) a shiny steel plate (c) dark soil (d) a dull brick
34. 34.True or false: a rough wooden board reflects light well. (a) False (b) True
35. 35.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is the one thing we change. (a) True (b) False
36. 36.🧺 Which of these is needed for the periscope? (a) a balloon (b) yeast (c) a battery cell (d) a ruler
37. 37.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) in colour (c) much bigger (d) flipped left to right
38. 38.🔭 Which of these reflects light well? (a) still clear water (b) a dull brick (c) dark soil (d) black cloth
39. 39.True or false: a shiny steel plate reflects light well. (a) True (b) False
40. 40.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed

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