Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 782 · 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 is the odd one out? (a) a mirror (b) a dull brick (c) aluminium foil (d) still clear water
2. 2.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) in colour (c) much bigger (d) flipped left to right
3. 3.📘 Light bouncing off a mirror is called ___. (a) evaporation (b) refraction (c) reflection (d) magnetism
4. 4.⚖️ 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 keep it the same (c) we change it
5. 5.⚖️ 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
6. 6.⚖️ 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) True (b) False
7. 7.🔭 How many mirrors does a simple periscope use?
8. 8.🔍 Which is the odd one out? (a) aluminium foil (b) a rough wooden board (c) dark soil (d) a dull brick
9. 9.True or false: two small mirrors is not needed for the periscope. (a) False (b) True
10. 10.🧺 Which of these is not needed for the periscope? (a) a balloon (b) sticky tape (c) two small mirrors (d) an empty juice carton
11. 11.🔭 Which of these reflects light well? (a) a rough wooden board (b) dark soil (c) a shiny steel plate (d) black cloth
12. 12.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
13. 13.🔭 How many times does light bounce off a mirror in a simple periscope?
14. 14.True or false: a mirror reflects light well. (a) False (b) True
15. 15.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) vinegar (b) an empty juice carton (c) a pencil (d) sticky tape
16. 16.⚖️ 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 carton (c) the angle of the mirrors (d) how clear the view is
17. 17.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) a balloon (c) two small mirrors (d) sticky tape
18. 18.🧺 Do we need a pencil for the periscope? (a) needed (b) not needed
19. 19.🧺 Which of these is needed for the periscope? (a) a ruler (b) vinegar (c) a battery cell (d) a balloon
20. 20.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
21. 21.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a wall (c) the Sun (d) a friend’s toy
22. 22.🔍 Which is the odd one out? (a) dark soil (b) a rough wooden board (c) a dull brick (d) a shiny steel plate
23. 23.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) how clear the view is (b) the angle of the mirrors (c) the same carton
24. 24.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
25. 25.🔭 Who uses a periscope to look above the water? (a) a farmer (b) a submarine crew (c) a baker (d) a pilot in a plane
26. 26.🔭 Which of these reflects light well? (a) black cloth (b) dark soil (c) aluminium foil (d) a rough wooden board
27. 27.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) an empty juice carton (c) sticky tape (d) a magnet
28. 28.True or false: a mirror reflects light poorly. (a) True (b) False
29. 29.🛟 Which mirrors are safest for a children’s periscope? (a) plastic safety mirrors (b) big wall mirrors (c) loose glass panes (d) broken glass bits
30. 30.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) nothing at all (b) taller walls (c) the ground (d) only short walls
31. 31.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
32. 32.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
33. 33.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
34. 34.⚖️ 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
35. 35.⚖️ 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 measure it (b) we change it (c) we keep it the same
36. 36.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) an empty juice carton (c) turmeric powder (d) two small mirrors
37. 37.True or false: turmeric powder is needed for the periscope. (a) True (b) False
38. 38.🧺 Do we need a balloon for the periscope? (a) not needed (b) needed
39. 39.True or false: a balloon is not needed for the periscope. (a) False (b) True
40. 40.🔭 Which of these reflects light well? (a) black cloth (b) a rough wooden board (c) still clear water (d) dark soil

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