Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 72 · 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.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) flipped left to right (c) in colour (d) upside down only
2. 2.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a battery cell (c) an empty juice carton (d) a pencil
3. 3.🔭 How many times does light bounce off a mirror in a simple periscope?
4. 4.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
5. 5.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a ruler (c) a magnet (d) two small mirrors
6. 6.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
7. 7.⚖️ 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
8. 8.🔍 Which is the odd one out? (a) a mirror (b) still clear water (c) dark soil (d) a shiny steel plate
9. 9.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is kept the same. (a) True (b) False
10. 10.True or false: black cloth reflects light well. (a) False (b) True
11. 11.⚖️ 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) False (b) True
12. 12.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is kept the same. (a) True (b) False
13. 13.True or false: a rough wooden board reflects light well. (a) True (b) False
14. 14.🔭 Which of these reflects light well? (a) a rough wooden board (b) black cloth (c) aluminium foil (d) a dull brick
15. 15.True or false: a dull brick reflects light well. (a) True (b) False
16. 16.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) only darkness (c) a rainbow (d) a brighter view
17. 17.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) two small mirrors (c) a ruler (d) yeast
18. 18.True or false: vinegar is needed for the periscope. (a) False (b) True
19. 19.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) a balloon (c) two small mirrors (d) vinegar
20. 20.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) turmeric powder (b) two small mirrors (c) a pencil (d) an empty juice carton
21. 21.🔭 How many mirrors does a simple periscope use?
22. 22.🔍 Which is the odd one out? (a) a shiny steel plate (b) black cloth (c) a mirror (d) aluminium foil
23. 23.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we change it (b) we measure it (c) we keep it the same
24. 24.🔍 Which is the odd one out? (a) a dull brick (b) a shiny steel plate (c) black cloth (d) dark soil
25. 25.⚖️ 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 measure it (c) we change it
26. 26.🧺 Which of these is needed for the periscope? (a) yeast (b) turmeric powder (c) a ruler (d) a balloon
27. 27.⚖️ 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 same light (c) how clear the view is
28. 28.⚖️ 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
29. 29.🔭 Which of these reflects light well? (a) a dull brick (b) dark soil (c) a shiny steel plate (d) black cloth
30. 30.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) big wall mirrors (c) plastic safety mirrors (d) loose glass panes
31. 31.🔭 Which of these reflects light poorly? (a) dark soil (b) a shiny steel plate (c) still clear water (d) a mirror
32. 32.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) nobody needs to (c) a grown-up (d) a friend who is running
33. 33.⚖️ 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 keep it the same (b) we measure it (c) we change it
34. 34.True or false: turmeric powder is needed for the periscope. (a) True (b) False
35. 35.True or false: a balloon is needed for the periscope. (a) False (b) True
36. 36.⚖️ 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) how clear the view is (c) the object we look at
37. 37.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
38. 38.True or false: a shiny steel plate reflects light poorly. (a) False (b) True
39. 39.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
40. 40.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well

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