Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 465 · 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.🔭 How many mirrors does a simple periscope use?
2. 2.🔭 Who uses a periscope to look above the water? (a) a submarine crew (b) a farmer (c) a pilot in a plane (d) a baker
3. 3.🔭 Which of these reflects light well? (a) a rough wooden board (b) black cloth (c) a mirror (d) dark soil
4. 4.🧺 Which of these is needed for the periscope? (a) yeast (b) a ruler (c) turmeric powder (d) a balloon
5. 5.🔭 How many times does light bounce off a mirror in a simple periscope?
6. 6.🔭 What does a periscope let you do? (a) hear far sounds (b) see in the dark (c) see over a wall (d) see germs
7. 7.🔭 Which of these reflects light well? (a) aluminium foil (b) black cloth (c) dark soil (d) a rough wooden board
8. 8.True or false: sticky tape is needed for the periscope. (a) True (b) False
9. 9.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) only darkness (c) a brighter view (d) two pictures
10. 10.⚖️ 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 change it (b) we keep it the same (c) we measure it
11. 11.🧺 Do we need a pencil for the periscope? (a) needed (b) not needed
12. 12.⚖️ 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
13. 13.⚖️ 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) True (b) False
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.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is what we measure. (a) False (b) True
16. 16.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
17. 17.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) how clear the view is (b) the same light (c) the same carton (d) the same mirrors
18. 18.🔮 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
19. 19.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
20. 20.🔍 Which is the odd one out? (a) a dull brick (b) a rough wooden board (c) black cloth (d) a shiny steel plate
21. 21.True or false: a shiny steel plate reflects light well. (a) True (b) False
22. 22.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) a tree (c) the Sun (d) a wall
23. 23.True or false: black cloth reflects light well. (a) False (b) True
24. 24.True or false: dark soil reflects light well. (a) False (b) True
25. 25.True or false: an empty juice carton is not needed for the periscope. (a) False (b) True
26. 26.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
27. 27.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the same mirrors (b) the same carton (c) the angle of the mirrors (d) how clear the view is
28. 28.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) nothing at all (b) the ground (c) only short walls (d) taller walls
29. 29.🔍 Which is the odd one out? (a) dark soil (b) a mirror (c) black cloth (d) a rough wooden board
30. 30.True or false: turmeric powder is not needed for the periscope. (a) False (b) True
31. 31.🧺 Do we need yeast for the periscope? (a) not needed (b) needed
32. 32.True or false: a pencil is not needed for the periscope. (a) True (b) False
33. 33.True or false: aluminium foil reflects light poorly. (a) False (b) True
34. 34.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) a grown-up (c) nobody needs to (d) a friend who is running
35. 35.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
36. 36.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
37. 37.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) two small mirrors (c) yeast (d) a pencil
38. 38.📘 Light bouncing off a mirror is called ___. (a) reflection (b) evaporation (c) refraction (d) magnetism
39. 39.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
40. 40.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) sticky tape (c) a pencil (d) a balloon

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