Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 687 · 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.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed
2. 2.🔭 What does a periscope let you do? (a) see in the dark (b) see over a wall (c) hear far sounds (d) see germs
3. 3.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a battery cell (b) sticky tape (c) two small mirrors (d) an empty juice carton
4. 4.🔍 Which is the odd one out? (a) aluminium foil (b) black cloth (c) a mirror (d) still clear water
5. 5.True or false: a rough wooden board reflects light poorly. (a) False (b) True
6. 6.🧺 Which of these is needed for the periscope? (a) yeast (b) a magnet (c) turmeric powder (d) a pencil
7. 7.🧺 Which of these is needed for the periscope? (a) a battery cell (b) turmeric powder (c) a magnet (d) two small mirrors
8. 8.True or false: a ruler is needed for the periscope. (a) False (b) True
9. 9.True or false: a mirror reflects light poorly. (a) True (b) False
10. 10.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) a brighter view (c) a rainbow (d) only darkness
11. 11.⚖️ 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 change it (c) we keep it the same
12. 12.True or false: black cloth reflects light well. (a) True (b) False
13. 13.⚖️ 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) the object we look at (c) the same light (d) the same carton
14. 14.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
15. 15.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 45 degrees (c) 90 degrees (d) 180 degrees
16. 16.True or false: a magnet is not needed for the periscope. (a) True (b) False
17. 17.True or false: aluminium foil reflects light well. (a) True (b) False
18. 18.🔭 Why must the two mirrors face each other and be parallel? (a) so it looks shiny (b) to make it heavy (c) so light reaches the eye (d) so it can float
19. 19.True or false: an empty juice carton is not needed for the periscope. (a) True (b) False
20. 20.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
21. 21.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
22. 22.🔮 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
23. 23.True or false: still clear water reflects light well. (a) True (b) False
24. 24.🔭 How many mirrors does a simple periscope use?
25. 25.True or false: sticky tape is not needed for the periscope. (a) False (b) True
26. 26.🔍 Which is the odd one out? (a) a shiny steel plate (b) a mirror (c) aluminium foil (d) a dull brick
27. 27.🧺 Which of these is needed for the periscope? (a) a balloon (b) sticky tape (c) a battery cell (d) a magnet
28. 28.True or false: a dull brick reflects light poorly. (a) False (b) True
29. 29.📘 Light bouncing off a mirror is called ___. (a) magnetism (b) evaporation (c) reflection (d) refraction
30. 30.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) a ruler (c) a magnet (d) a battery cell
31. 31.🔭 Which of these reflects light well? (a) a dull brick (b) a shiny steel plate (c) a rough wooden board (d) dark soil
32. 32.🔭 How many times does light bounce off a mirror in a simple periscope?
33. 33.⚖️ 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 measure it (c) we change it
34. 34.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) still clear water (c) aluminium foil (d) a dull brick
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 change it (b) we keep it the same (c) we measure it
36. 36.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is the one thing we change. (a) True (b) False
37. 37.⚖️ 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
38. 38.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) upside down only (c) in colour (d) flipped left to right
39. 39.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is kept the same. (a) False (b) True
40. 40.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a balloon (b) two small mirrors (c) a pencil (d) a ruler

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