Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 888 · 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) dark soil (b) a mirror (c) aluminium foil (d) a shiny steel plate
2. 2.🧺 Which of these is needed for the periscope? (a) yeast (b) turmeric powder (c) two small mirrors (d) a balloon
3. 3.True or false: black cloth reflects light poorly. (a) False (b) True
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 change it (c) we keep it the same
5. 5.True or false: aluminium foil reflects light well. (a) False (b) True
6. 6.⚖️ 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
7. 7.⚖️ 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
8. 8.True or false: a shiny steel plate reflects light well. (a) True (b) False
9. 9.🔭 Which of these reflects light poorly? (a) a mirror (b) a shiny steel plate (c) a dull brick (d) still clear water
10. 10.🧺 Do we need vinegar for the periscope? (a) not needed (b) needed
11. 11.True or false: sticky tape is needed for the periscope. (a) True (b) False
12. 12.🧺 Which of these is needed for the periscope? (a) a pencil (b) a magnet (c) yeast (d) turmeric powder
13. 13.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
14. 14.🔍 Which is the odd one out? (a) aluminium foil (b) a shiny steel plate (c) still clear water (d) black cloth
15. 15.🔭 Which of these reflects light poorly? (a) aluminium foil (b) black cloth (c) a mirror (d) a shiny steel plate
16. 16.🔭 What does a periscope let you do? (a) hear far sounds (b) see germs (c) see over a wall (d) see in the dark
17. 17.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
18. 18.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a balloon (c) a ruler (d) a pencil
19. 19.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) an empty juice carton (c) a ruler (d) vinegar
20. 20.⚖️ 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) False (b) True
21. 21.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) the ground (c) nothing at all (d) taller walls
22. 22.🔭 How many times does light bounce off a mirror in a simple periscope?
23. 23.⚖️ 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 angle of the mirrors (c) how clear the view is (d) the same carton
24. 24.🔭 At what angle are the mirrors set in a simple periscope? (a) 45 degrees (b) 10 degrees (c) 180 degrees (d) 90 degrees
25. 25.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a balloon (b) two small mirrors (c) a pencil (d) an empty juice carton
26. 26.True or false: two small mirrors is not needed for the periscope. (a) True (b) False
27. 27.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
28. 28.🔭 Which of these reflects light well? (a) a dull brick (b) black cloth (c) a rough wooden board (d) a shiny steel plate
29. 29.⚖️ 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) False (b) True
30. 30.🔭 Which of these reflects light poorly? (a) dark soil (b) a shiny steel plate (c) a mirror (d) still clear water
31. 31.⚖️ 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) the same carton (c) how clear the view is
32. 32.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) much bigger (c) in colour (d) flipped left to right
33. 33.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) the Sun (c) a wall (d) a tree
34. 34.⚖️ 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 change it (c) we keep it the same
35. 35.🧺 Which of these is not needed for the periscope? (a) a magnet (b) two small mirrors (c) a ruler (d) a pencil
36. 36.📘 Light bouncing off a mirror is called ___. (a) magnetism (b) refraction (c) evaporation (d) reflection
37. 37.🔭 Why must the two mirrors face each other and be parallel? (a) so it can float (b) so light reaches the eye (c) so it looks shiny (d) to make it heavy
38. 38.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
39. 39.🔭 How many mirrors does a simple periscope use?
40. 40.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) two pictures (c) a rainbow (d) only darkness

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