Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 245 · 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 make the periscope tube twice as tall. You can see over ___. (a) the ground (b) only short walls (c) taller walls (d) nothing at all
2. 2.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the angle of the mirrors (b) the same light (c) how clear the view is (d) the object we look at
3. 3.🧺 Which of these is needed for the periscope? (a) yeast (b) two small mirrors (c) a balloon (d) turmeric powder
4. 4.⚖️ 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
5. 5.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) in colour (c) flipped left to right (d) much bigger
6. 6.🔍 Which is the odd one out? (a) aluminium foil (b) a mirror (c) black cloth (d) a shiny steel plate
7. 7.⚖️ 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
8. 8.🔍 Which is the odd one out? (a) a dull brick (b) a mirror (c) dark soil (d) black cloth
9. 9.🔭 Which of these reflects light poorly? (a) a rough wooden board (b) aluminium foil (c) still clear water (d) a shiny steel plate
10. 10.🧺 Which of these is needed for the periscope? (a) vinegar (b) a magnet (c) yeast (d) an empty juice carton
11. 11.🧺 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
12. 12.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is the one thing we change. (a) False (b) True
13. 13.⚖️ 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 change it (c) we keep it the same
14. 14.⚖️ 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 keep it the same (c) we change it
15. 15.True or false: a dull brick reflects light poorly. (a) False (b) True
16. 16.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a battery cell (b) two small mirrors (c) an empty juice carton (d) a ruler
17. 17.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
18. 18.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) broken glass bits (c) plastic safety mirrors (d) big wall mirrors
19. 19.🔭 Which of these reflects light well? (a) dark soil (b) a rough wooden board (c) black cloth (d) aluminium foil
20. 20.🔭 Which of these reflects light poorly? (a) a dull brick (b) a mirror (c) still clear water (d) a shiny steel plate
21. 21.⚖️ 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
22. 22.True or false: a shiny steel plate reflects light poorly. (a) True (b) False
23. 23.🔭 How many times does light bounce off a mirror in a simple periscope?
24. 24.🔭 Which of these reflects light well? (a) dark soil (b) a rough wooden board (c) a dull brick (d) still clear water
25. 25.🔭 Does dark soil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
26. 26.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a friend’s toy (c) a wall (d) the Sun
27. 27.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
28. 28.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) two small mirrors (c) vinegar (d) an empty juice carton
29. 29.🔍 Which is the odd one out? (a) a dull brick (b) black cloth (c) still clear water (d) a rough wooden board
30. 30.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the object we look at (b) the angle of the mirrors (c) the same carton (d) the same mirrors
31. 31.True or false: a mirror reflects light poorly. (a) True (b) False
32. 32.🔭 Who uses a periscope to look above the water? (a) a submarine crew (b) a farmer (c) a baker (d) a pilot in a plane
33. 33.⚖️ 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
34. 34.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well
35. 35.🔍 Which is the odd one out? (a) a shiny steel plate (b) a mirror (c) a dull brick (d) still clear water
36. 36.🧺 Which of these is needed for the periscope? (a) a battery cell (b) a ruler (c) a magnet (d) yeast
37. 37.🧺 Do we need vinegar for the periscope? (a) not needed (b) needed
38. 38.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the object we look at (b) how clear the view is (c) the angle of the mirrors
39. 39.🔭 How many mirrors does a simple periscope use?
40. 40.⚖️ 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

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