Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 224 · 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.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) yeast (b) sticky tape (c) a pencil (d) two small mirrors
2. 2.🔭 Which of these reflects light well? (a) a rough wooden board (b) dark soil (c) still clear water (d) black cloth
3. 3.🧺 Do we need a battery cell for the periscope? (a) not needed (b) needed
4. 4.True or false: aluminium foil reflects light poorly. (a) True (b) False
5. 5.🧺 Which of these is needed for the periscope? (a) two small mirrors (b) turmeric powder (c) a magnet (d) a battery cell
6. 6.⚖️ 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
7. 7.📘 Light bouncing off a mirror is called ___. (a) evaporation (b) magnetism (c) reflection (d) refraction
8. 8.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) how clear the view is (b) the same carton (c) the object we look at (d) the angle of the mirrors
9. 9.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
10. 10.⚖️ 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
11. 11.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a mirror (c) a dull brick (d) a shiny steel plate
12. 12.⚖️ 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) the object we look at (c) the angle of the mirrors (d) the same light
13. 13.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) two small mirrors (c) turmeric powder (d) an empty juice carton
14. 14.True or false: still clear water reflects light well. (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 kept the same. (a) False (b) True
16. 16.True or false: vinegar is needed for the periscope. (a) True (b) False
17. 17.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) a grown-up (c) nobody needs to (d) a friend who is running
18. 18.🔭 How many mirrors does a simple periscope use?
19. 19.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
20. 20.True or false: a dull brick reflects light poorly. (a) True (b) False
21. 21.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) loose glass panes (c) broken glass bits (d) plastic safety mirrors
22. 22.🧺 Which of these is not needed for the periscope? (a) a ruler (b) sticky tape (c) an empty juice carton (d) vinegar
23. 23.True or false: turmeric powder is needed for the periscope. (a) False (b) True
24. 24.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 180 degrees (c) 90 degrees (d) 45 degrees
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) True (b) False
26. 26.⚖️ 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 measure it (c) we change it
27. 27.🔭 How many times does light bounce off a mirror in a simple periscope?
28. 28.⚖️ 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 measure it (c) we keep it the same
29. 29.🔍 Which is the odd one out? (a) a rough wooden board (b) a dull brick (c) dark soil (d) still clear water
30. 30.🔭 Which of these reflects light well? (a) black cloth (b) dark soil (c) a shiny steel plate (d) a rough wooden board
31. 31.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
32. 32.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) a mirror (c) still clear water (d) a rough wooden board
33. 33.True or false: a balloon is needed for the periscope. (a) False (b) True
34. 34.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
35. 35.True or false: a magnet is needed for the periscope. (a) False (b) True
36. 36.🧺 Which of these is not needed for the periscope? (a) a pencil (b) an empty juice carton (c) turmeric powder (d) a ruler
37. 37.⚖️ 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
38. 38.True or false: still clear water reflects light poorly. (a) False (b) True
39. 39.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) an empty juice carton (c) two small mirrors (d) a battery cell
40. 40.⚖️ 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 measure it (c) we change it

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