Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 866 · 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.🔭 At what angle are the mirrors set in a simple periscope? (a) 180 degrees (b) 10 degrees (c) 45 degrees (d) 90 degrees
2. 2.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) taller walls (b) the ground (c) nothing at all (d) only short walls
3. 3.True or false: dark soil reflects light well. (a) True (b) False
4. 4.🔭 How many mirrors does a simple periscope use?
5. 5.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) flipped left to right (c) much bigger (d) in colour
6. 6.🔭 Which of these reflects light poorly? (a) a mirror (b) a shiny steel plate (c) aluminium foil (d) a rough wooden board
7. 7.📘 Light bouncing off a mirror is called ___. (a) magnetism (b) reflection (c) evaporation (d) refraction
8. 8.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a ruler (c) a pencil (d) a magnet
9. 9.⚖️ 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
10. 10.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) a pencil (c) an empty juice carton (d) a balloon
11. 11.True or false: black cloth reflects light poorly. (a) False (b) True
12. 12.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) the youngest child (c) nobody needs to (d) a grown-up
13. 13.🔭 Which of these reflects light well? (a) dark soil (b) still clear water (c) a rough wooden board (d) a dull brick
14. 14.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we keep it the same (b) we change it (c) we measure it
15. 15.True or false: turmeric powder is not needed for the periscope. (a) False (b) True
16. 16.⚖️ 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 keep it the same (c) we change it
17. 17.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
18. 18.🧺 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 balloon
19. 19.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a mirror (c) still clear water (d) dark soil
20. 20.🔭 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
21. 21.⚖️ 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) True (b) False
22. 22.True or false: a shiny steel plate reflects light well. (a) True (b) False
23. 23.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) a mirror (c) still clear water (d) black cloth
24. 24.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) vinegar (c) a pencil (d) sticky tape
25. 25.⚖️ 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) False (b) True
26. 26.🔍 Which is the odd one out? (a) a shiny steel plate (b) aluminium foil (c) still clear water (d) a dull brick
27. 27.⚖️ 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) the angle of the mirrors (c) how clear the view is
28. 28.True or false: black cloth reflects light well. (a) False (b) True
29. 29.True or false: a mirror reflects light well. (a) True (b) False
30. 30.🔭 What does a periscope let you do? (a) see over a wall (b) see in the dark (c) see germs (d) hear far sounds
31. 31.True or false: sticky tape is not needed for the periscope. (a) True (b) False
32. 32.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same light (b) how clear the view is (c) the angle of the mirrors
33. 33.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) yeast (c) an empty juice carton (d) a ruler
34. 34.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
35. 35.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
36. 36.True or false: a pencil is needed for the periscope. (a) True (b) False
37. 37.⚖️ 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 mirrors (c) the angle of the mirrors (d) the same carton
38. 38.🔭 Which of these reflects light well? (a) a rough wooden board (b) a shiny steel plate (c) black cloth (d) a dull brick
39. 39.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
40. 40.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed

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