Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 212 · 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.True or false: a dull brick reflects light well. (a) True (b) False
2. 2.🔭 Who uses a periscope to look above the water? (a) a farmer (b) a baker (c) a submarine crew (d) a pilot in a plane
3. 3.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) loose glass panes (c) big wall mirrors (d) plastic safety mirrors
4. 4.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) turmeric powder (c) a pencil (d) a ruler
5. 5.⚖️ 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
6. 6.🔭 Which of these reflects light well? (a) a rough wooden board (b) a shiny steel plate (c) black cloth (d) a dull brick
7. 7.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
8. 8.🔍 Which is the odd one out? (a) a mirror (b) a dull brick (c) black cloth (d) a rough wooden board
9. 9.⚖️ 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) True (b) False
10. 10.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
11. 11.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) only darkness (c) a brighter view (d) two pictures
12. 12.🔭 How many times does light bounce off a mirror in a simple periscope?
13. 13.True or false: still clear water reflects light well. (a) True (b) False
14. 14.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) how clear the view is (b) the same mirrors (c) the angle of the mirrors (d) the same light
15. 15.🧺 Which of these is needed for the periscope? (a) a magnet (b) a pencil (c) a balloon (d) vinegar
16. 16.True or false: sticky tape is not needed for the periscope. (a) False (b) True
17. 17.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
18. 18.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
19. 19.⚖️ 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
20. 20.🔭 Which of these reflects light poorly? (a) still clear water (b) a dull brick (c) a shiny steel plate (d) a mirror
21. 21.🧺 Which of these is not needed for the periscope? (a) vinegar (b) a ruler (c) two small mirrors (d) an empty juice carton
22. 22.True or false: black cloth reflects light poorly. (a) True (b) False
23. 23.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) nobody needs to (c) a friend who is running (d) a grown-up
24. 24.🔭 Which of these reflects light poorly? (a) a mirror (b) black cloth (c) aluminium foil (d) a shiny steel plate
25. 25.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
26. 26.⚖️ 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 angle of the mirrors (c) the same carton (d) the same mirrors
27. 27.⚖️ 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 measure it (c) we keep it the same
28. 28.🔮 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
29. 29.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) sticky tape (c) two small mirrors (d) a balloon
30. 30.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) sticky tape (c) a pencil (d) vinegar
31. 31.True or false: a mirror reflects light poorly. (a) False (b) True
32. 32.🔍 Which is the odd one out? (a) aluminium foil (b) still clear water (c) a dull brick (d) a mirror
33. 33.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a magnet (b) a ruler (c) a pencil (d) two small mirrors
34. 34.🔭 How many mirrors does a simple periscope use?
35. 35.⚖️ 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
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.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
38. 38.📘 Light bouncing off a mirror is called ___. (a) refraction (b) evaporation (c) reflection (d) magnetism
39. 39.⚖️ 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
40. 40.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is what we measure. (a) False (b) True

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