Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 439 · 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: black cloth reflects light well. (a) True (b) False
2. 2.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the angle of the mirrors (b) the object we look at (c) how clear the view is
3. 3.True or false: a mirror reflects light poorly. (a) True (b) False
4. 4.⚖️ 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 change it (c) we measure it
5. 5.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) vinegar (c) a magnet (d) two small mirrors
6. 6.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) turmeric powder (b) an empty juice carton (c) a ruler (d) a pencil
7. 7.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we measure it (b) we change it (c) we keep it the same
8. 8.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
9. 9.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
10. 10.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same mirrors (b) the same light (c) how clear the view is (d) the object we look at
11. 11.📘 Light bouncing off a mirror is called ___. (a) refraction (b) evaporation (c) reflection (d) magnetism
12. 12.⚖️ 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
13. 13.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) flipped left to right (b) upside down only (c) much bigger (d) in colour
14. 14.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 90 degrees (c) 180 degrees (d) 45 degrees
15. 15.⚖️ 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
16. 16.🔭 Which of these reflects light well? (a) aluminium foil (b) a dull brick (c) a rough wooden board (d) black cloth
17. 17.True or false: a balloon is needed for the periscope. (a) True (b) False
18. 18.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) two small mirrors (c) a magnet (d) an empty juice carton
19. 19.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is what we measure. (a) True (b) False
20. 20.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
21. 21.True or false: a pencil is not needed for the periscope. (a) False (b) True
22. 22.🛟 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
23. 23.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) an empty juice carton (c) vinegar (d) two small mirrors
24. 24.⚖️ 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 object we look at (c) the angle of the mirrors (d) the same mirrors
25. 25.⚖️ 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
26. 26.🔭 How many mirrors does a simple periscope use?
27. 27.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a pencil (c) sticky tape (d) a balloon
28. 28.True or false: a ruler is not needed for the periscope. (a) False (b) True
29. 29.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
30. 30.🔭 How many times does light bounce off a mirror in a simple periscope?
31. 31.True or false: yeast is needed for the periscope. (a) True (b) False
32. 32.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
33. 33.🔍 Which is the odd one out? (a) aluminium foil (b) a dull brick (c) still clear water (d) a shiny steel plate
34. 34.🧺 Which of these is not needed for the periscope? (a) a pencil (b) two small mirrors (c) a balloon (d) a ruler
35. 35.True or false: a dull brick reflects light poorly. (a) True (b) False
36. 36.🔍 Which is the odd one out? (a) a shiny steel plate (b) a rough wooden board (c) a dull brick (d) black cloth
37. 37.True or false: aluminium foil reflects light poorly. (a) False (b) True
38. 38.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is what we measure. (a) False (b) True
39. 39.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) two small mirrors (c) a pencil (d) yeast
40. 40.🧺 Do we need a battery cell for the periscope? (a) not needed (b) needed

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