Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 81 · 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: the angle of the mirrors is the one thing we change. (a) True (b) False
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 same carton (b) how clear the view is (c) the angle of the mirrors (d) the same mirrors
3. 3.🛟 Which mirrors are safest for a children’s periscope? (a) plastic safety mirrors (b) broken glass bits (c) big wall mirrors (d) loose glass panes
4. 4.🔭 How many times does light bounce off a mirror in a simple periscope?
5. 5.🧺 Which of these is needed for the periscope? (a) vinegar (b) turmeric powder (c) an empty juice carton (d) a magnet
6. 6.🔍 Which is the odd one out? (a) still clear water (b) a mirror (c) a rough wooden board (d) a shiny steel plate
7. 7.🔍 Which is the odd one out? (a) black cloth (b) a rough wooden board (c) a mirror (d) a dull brick
8. 8.🔭 Why must the two mirrors face each other and be parallel? (a) so light reaches the eye (b) to make it heavy (c) so it looks shiny (d) so it can float
9. 9.🔭 How many mirrors does a simple periscope use?
10. 10.True or false: sticky tape is needed for the periscope. (a) True (b) False
11. 11.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
12. 12.🔭 Which of these reflects light poorly? (a) still clear water (b) a shiny steel plate (c) aluminium foil (d) dark soil
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.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
15. 15.⚖️ 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
16. 16.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
17. 17.⚖️ 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) True (b) False
18. 18.True or false: a mirror reflects light well. (a) True (b) False
19. 19.⚖️ 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
20. 20.🔭 Which of these reflects light well? (a) a rough wooden board (b) still clear water (c) dark soil (d) black cloth
21. 21.⚖️ 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
22. 22.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) vinegar (c) a ruler (d) two small mirrors
23. 23.True or false: black cloth reflects light poorly. (a) False (b) True
24. 24.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the object we look at (b) the same light (c) how clear the view is (d) the angle of the mirrors
25. 25.⚖️ 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
26. 26.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) yeast (c) a pencil (d) two small mirrors
27. 27.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) in colour (b) much bigger (c) upside down only (d) flipped left to right
28. 28.🧺 Do we need a pencil for the periscope? (a) not needed (b) needed
29. 29.📘 Light bouncing off a mirror is called ___. (a) magnetism (b) reflection (c) refraction (d) evaporation
30. 30.🔍 Which is the odd one out? (a) a shiny steel plate (b) a dull brick (c) still clear water (d) a mirror
31. 31.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is kept the same. (a) False (b) True
32. 32.⚖️ 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
33. 33.🔭 Does dark soil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
34. 34.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a pencil (c) an empty juice carton (d) a magnet
35. 35.⚖️ 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
36. 36.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same light (b) how clear the view is (c) the angle of the mirrors
37. 37.🔭 At what angle are the mirrors set in a simple periscope? (a) 180 degrees (b) 45 degrees (c) 90 degrees (d) 10 degrees
38. 38.True or false: a dull brick reflects light well. (a) True (b) False
39. 39.🔭 Which of these reflects light well? (a) black cloth (b) dark soil (c) a shiny steel plate (d) a dull brick
40. 40.🛟 Who should cut the holes in the juice carton? (a) nobody needs to (b) a friend who is running (c) the youngest child (d) a grown-up

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