Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 991 · 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.🧺 Which of these is needed for the periscope? (a) vinegar (b) yeast (c) two small mirrors (d) a battery cell
2. 2.⚖️ 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) how clear the view is (c) the same light (d) the angle of the mirrors
3. 3.True or false: a battery cell is needed for the periscope. (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 same mirrors”? (a) we keep it the same (b) we change it (c) we measure it
5. 5.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a pencil (c) a battery cell (d) an empty juice carton
6. 6.True or false: still clear water reflects light well. (a) True (b) False
7. 7.🔍 Which is the odd one out? (a) aluminium foil (b) a shiny steel plate (c) still clear water (d) a rough wooden board
8. 8.⚖️ 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 change it (c) we measure it
9. 9.⚖️ 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 keep it the same (c) we measure it
10. 10.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is the one thing we change. (a) True (b) False
11. 11.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a balloon (b) two small mirrors (c) a ruler (d) sticky tape
12. 12.⚖️ 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
13. 13.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) in colour (b) flipped left to right (c) much bigger (d) upside down only
14. 14.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) a tree (c) a wall (d) the Sun
15. 15.🔭 At what angle are the mirrors set in a simple periscope? (a) 180 degrees (b) 90 degrees (c) 10 degrees (d) 45 degrees
16. 16.⚖️ 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
17. 17.True or false: black cloth reflects light poorly. (a) True (b) False
18. 18.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
19. 19.🔍 Which is the odd one out? (a) a shiny steel plate (b) a mirror (c) still clear water (d) black cloth
20. 20.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
21. 21.🔭 How many times does light bounce off a mirror in a simple periscope?
22. 22.🧺 Do we need a balloon for the periscope? (a) not needed (b) needed
23. 23.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) loose glass panes (c) broken glass bits (d) plastic safety mirrors
24. 24.True or false: black cloth reflects light well. (a) True (b) False
25. 25.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) the ground (b) nothing at all (c) taller walls (d) only short walls
26. 26.⚖️ 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
27. 27.🔍 Which is the odd one out? (a) a dull brick (b) aluminium foil (c) a shiny steel plate (d) still clear water
28. 28.📘 Light bouncing off a mirror is called ___. (a) magnetism (b) evaporation (c) refraction (d) reflection
29. 29.🧺 Do we need a battery cell for the periscope? (a) not needed (b) needed
30. 30.🔭 Who uses a periscope to look above the water? (a) a submarine crew (b) a baker (c) a farmer (d) a pilot in a plane
31. 31.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) sticky tape (c) turmeric powder (d) a pencil
32. 32.True or false: still clear water reflects light poorly. (a) True (b) False
33. 33.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
34. 34.⚖️ 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 same mirrors
35. 35.⚖️ 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) how clear the view is (c) the same mirrors (d) the same carton
36. 36.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we change it (b) we keep it the same (c) we measure it
37. 37.🔭 How many mirrors does a simple periscope use?
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.🔭 Which of these reflects light poorly? (a) a mirror (b) a shiny steel plate (c) a dull brick (d) still clear water
40. 40.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly

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