Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 741 · 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.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
2. 2.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) two small mirrors (c) an empty juice carton (d) yeast
3. 3.⚖️ 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 keep it the same (b) we change it (c) we measure it
4. 4.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) sticky tape (c) turmeric powder (d) two small mirrors
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 keep it the same (b) we measure it (c) we change it
6. 6.🔍 Which is the odd one out? (a) black cloth (b) still clear water (c) aluminium foil (d) a mirror
7. 7.🔭 Which of these reflects light well? (a) dark soil (b) a rough wooden board (c) a dull brick (d) aluminium foil
8. 8.🔭 Why must the two mirrors face each other and be parallel? (a) so it can float (b) to make it heavy (c) so it looks shiny (d) so light reaches the eye
9. 9.True or false: dark soil reflects light well. (a) True (b) False
10. 10.📘 Light bouncing off a mirror is called ___. (a) evaporation (b) reflection (c) refraction (d) magnetism
11. 11.🔭 Which of these reflects light poorly? (a) a mirror (b) aluminium foil (c) a shiny steel plate (d) dark soil
12. 12.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) a brighter view (c) two pictures (d) only darkness
13. 13.🧺 Which of these is needed for the periscope? (a) vinegar (b) a balloon (c) yeast (d) an empty juice carton
14. 14.⚖️ 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) False (b) True
15. 15.True or false: black cloth reflects light poorly. (a) True (b) False
16. 16.⚖️ 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 light (b) the same carton (c) how clear the view is (d) the angle of the mirrors
17. 17.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) a mirror (c) black cloth (d) still clear water
18. 18.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) big wall mirrors (c) broken glass bits (d) plastic safety mirrors
19. 19.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a friend’s toy (c) the Sun (d) a wall
20. 20.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is the one thing we change. (a) False (b) True
21. 21.⚖️ 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 measure it (b) we keep it the same (c) we change it
22. 22.⚖️ 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 keep it the same (b) we measure it (c) we change it
23. 23.⚖️ 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
24. 24.🧺 Which of these is needed for the periscope? (a) vinegar (b) two small mirrors (c) yeast (d) a balloon
25. 25.🧺 Which of these is needed for the periscope? (a) vinegar (b) yeast (c) a magnet (d) a pencil
26. 26.True or false: yeast is needed for the periscope. (a) False (b) True
27. 27.🔭 Who uses a periscope to look above the water? (a) a pilot in a plane (b) a baker (c) a submarine crew (d) a farmer
28. 28.True or false: still clear water reflects light well. (a) True (b) False
29. 29.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
30. 30.🧺 Which of these is not needed for the periscope? (a) a pencil (b) vinegar (c) an empty juice carton (d) two small mirrors
31. 31.True or false: a balloon is not needed for the periscope. (a) False (b) True
32. 32.🔭 Which of these reflects light well? (a) black cloth (b) dark soil (c) a dull brick (d) a mirror
33. 33.🔍 Which is the odd one out? (a) still clear water (b) a shiny steel plate (c) a dull brick (d) a mirror
34. 34.🔭 At what angle are the mirrors set in a simple periscope? (a) 180 degrees (b) 10 degrees (c) 90 degrees (d) 45 degrees
35. 35.🔭 How many times does light bounce off a mirror in a simple periscope?
36. 36.True or false: an empty juice carton is not needed for the periscope. (a) True (b) False
37. 37.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
38. 38.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) in colour (b) flipped left to right (c) upside down only (d) much bigger
39. 39.🔭 How many mirrors does a simple periscope use?
40. 40.🔍 Which is the odd one out? (a) a rough wooden board (b) still clear water (c) black cloth (d) a dull brick

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