Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 960 · 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: aluminium foil reflects light poorly. (a) True (b) False
2. 2.True or false: still clear water reflects light poorly. (a) True (b) False
3. 3.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a ruler (c) a magnet (d) sticky tape
4. 4.🧺 Which of these is not needed for the periscope? (a) yeast (b) sticky tape (c) two small mirrors (d) a ruler
5. 5.🧺 Which of these is needed for the periscope? (a) a balloon (b) turmeric powder (c) two small mirrors (d) a battery cell
6. 6.⚖️ 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
7. 7.True or false: a magnet is not needed for the periscope. (a) False (b) True
8. 8.⚖️ 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 carton (c) how clear the view is (d) the angle of the mirrors
9. 9.⚖️ 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 change it (b) we keep it the same (c) we measure it
10. 10.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
11. 11.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the angle of the mirrors (b) the same light (c) how clear the view is (d) the object we look at
12. 12.🔭 How many times does light bounce off a mirror in a simple periscope?
13. 13.📘 Light bouncing off a mirror is called ___. (a) magnetism (b) refraction (c) evaporation (d) reflection
14. 14.True or false: a balloon is not needed for the periscope. (a) False (b) True
15. 15.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
16. 16.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 10 degrees (c) 180 degrees (d) 45 degrees
17. 17.🔭 Which of these reflects light well? (a) a shiny steel plate (b) dark soil (c) a rough wooden board (d) black cloth
18. 18.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
19. 19.⚖️ 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 change it (c) we measure it
20. 20.🔭 How many mirrors does a simple periscope use?
21. 21.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
22. 22.True or false: sticky tape is needed for the periscope. (a) True (b) False
23. 23.⚖️ 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
24. 24.🛟 Which mirrors are safest for a children’s periscope? (a) plastic safety mirrors (b) big wall mirrors (c) broken glass bits (d) loose glass panes
25. 25.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
26. 26.🧺 Do we need a battery cell for the periscope? (a) not needed (b) needed
27. 27.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) only darkness (c) a brighter view (d) a rainbow
28. 28.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
29. 29.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) yeast (c) a ruler (d) two small mirrors
30. 30.True or false: an empty juice carton is needed for the periscope. (a) False (b) True
31. 31.🔍 Which is the odd one out? (a) dark soil (b) a mirror (c) black cloth (d) a dull brick
32. 32.🔍 Which is the odd one out? (a) a shiny steel plate (b) black cloth (c) still clear water (d) a mirror
33. 33.True or false: a battery cell is needed for the periscope. (a) True (b) False
34. 34.🧺 Which of these is needed for the periscope? (a) vinegar (b) a magnet (c) a balloon (d) sticky tape
35. 35.⚖️ 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
36. 36.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is the one thing we change. (a) False (b) True
37. 37.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) upside down only (c) in colour (d) flipped left to right
38. 38.🔍 Which is the odd one out? (a) a dull brick (b) a shiny steel plate (c) aluminium foil (d) a mirror
39. 39.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) sticky tape (c) a ruler (d) vinegar
40. 40.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a magnet (c) a pencil (d) a ruler

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