Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 644 · 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.📘 Light bouncing off a mirror is called ___. (a) evaporation (b) reflection (c) magnetism (d) refraction
2. 2.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the object we look at (b) the same carton (c) the angle of the mirrors (d) the same mirrors
3. 3.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) how clear the view is (b) the angle of the mirrors (c) the same light
4. 4.🔭 How many mirrors does a simple periscope use?
5. 5.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 180 degrees (c) 45 degrees (d) 10 degrees
6. 6.⚖️ 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
7. 7.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a mirror (c) still clear water (d) dark soil
8. 8.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is kept the same. (a) False (b) True
9. 9.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
10. 10.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) how clear the view is (b) the angle of the mirrors (c) the same carton
11. 11.True or false: a battery cell is needed for the periscope. (a) True (b) False
12. 12.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) how clear the view is (b) the angle of the mirrors (c) the same mirrors
13. 13.True or false: a dull brick reflects light well. (a) False (b) True
14. 14.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
15. 15.🔭 How many times does light bounce off a mirror in a simple periscope?
16. 16.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) vinegar (b) two small mirrors (c) a pencil (d) a ruler
17. 17.⚖️ 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
18. 18.🧺 Do we need vinegar for the periscope? (a) not needed (b) needed
19. 19.🔍 Which is the odd one out? (a) still clear water (b) a shiny steel plate (c) aluminium foil (d) a dull brick
20. 20.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) an empty juice carton (c) a battery cell (d) a ruler
21. 21.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
22. 22.🔭 Which of these reflects light well? (a) a rough wooden board (b) still clear water (c) black cloth (d) dark soil
23. 23.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) flipped left to right (b) in colour (c) much bigger (d) upside down only
24. 24.⚖️ 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 change it (c) we keep it the same
25. 25.True or false: a magnet is not needed for the periscope. (a) True (b) False
26. 26.True or false: a dull brick reflects light poorly. (a) True (b) False
27. 27.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) sticky tape (c) a balloon (d) a pencil
28. 28.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a friend’s toy (c) the Sun (d) a wall
29. 29.🔭 Which of these reflects light well? (a) black cloth (b) dark soil (c) a dull brick (d) a mirror
30. 30.🧺 Which of these is needed for the periscope? (a) vinegar (b) an empty juice carton (c) a battery cell (d) a balloon
31. 31.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
32. 32.True or false: sticky tape is not needed for the periscope. (a) False (b) True
33. 33.🔭 Why must the two mirrors face each other and be parallel? (a) so it can float (b) so light reaches the eye (c) so it looks shiny (d) to make it heavy
34. 34.True or false: turmeric powder is needed for the periscope. (a) True (b) False
35. 35.⚖️ 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
36. 36.True or false: a shiny steel plate reflects light poorly. (a) False (b) True
37. 37.True or false: dark soil reflects light well. (a) True (b) False
38. 38.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) only darkness (c) a rainbow (d) a brighter view
39. 39.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) still clear water (c) a dull brick (d) a mirror
40. 40.True or false: a pencil is not needed for the periscope. (a) False (b) True

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