Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 460 · 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 two small mirrors for the periscope? (a) needed (b) not needed
2. 2.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we keep it the same (b) we measure it (c) we change it
3. 3.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) a battery cell (c) a pencil (d) an empty juice carton
4. 4.🔭 Which of these reflects light well? (a) a rough wooden board (b) a dull brick (c) black cloth (d) a mirror
5. 5.🧺 Do we need a pencil for the periscope? (a) needed (b) not needed
6. 6.True or false: a magnet is needed for the periscope. (a) True (b) False
7. 7.True or false: aluminium foil reflects light well. (a) False (b) True
8. 8.True or false: vinegar is needed for the periscope. (a) True (b) False
9. 9.📘 Light bouncing off a mirror is called ___. (a) evaporation (b) refraction (c) magnetism (d) reflection
10. 10.True or false: a battery cell is needed for the periscope. (a) False (b) True
11. 11.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
12. 12.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) two small mirrors (c) a magnet (d) an empty juice carton
13. 13.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is the one thing we change. (a) False (b) True
14. 14.🔭 How many times does light bounce off a mirror in a simple periscope?
15. 15.🔍 Which is the odd one out? (a) a rough wooden board (b) a shiny steel plate (c) still clear water (d) a mirror
16. 16.🧺 Which of these is needed for the periscope? (a) a ruler (b) vinegar (c) a magnet (d) a balloon
17. 17.True or false: a mirror reflects light well. (a) True (b) False
18. 18.True or false: a dull brick reflects light poorly. (a) False (b) True
19. 19.🛟 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
20. 20.⚖️ 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 change it (b) we keep it the same (c) we measure it
21. 21.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
22. 22.🧺 Which of these is not needed for the periscope? (a) a pencil (b) a ruler (c) two small mirrors (d) yeast
23. 23.🧺 Do we need yeast for the periscope? (a) not needed (b) needed
24. 24.🔍 Which is the odd one out? (a) a shiny steel plate (b) aluminium foil (c) black cloth (d) still clear water
25. 25.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is what we measure. (a) True (b) False
26. 26.🔭 Does dark soil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
27. 27.True or false: a balloon is not needed for the periscope. (a) False (b) True
28. 28.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a rough wooden board (c) a shiny steel plate (d) still clear water
29. 29.🔮 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
30. 30.🔍 Which is the odd one out? (a) a shiny steel plate (b) still clear water (c) aluminium foil (d) a dull brick
31. 31.True or false: a ruler is not needed for the periscope. (a) False (b) True
32. 32.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) nothing at all (c) taller walls (d) the ground
33. 33.🧺 Do we need a magnet 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 what we measure? (a) the same mirrors (b) the angle of the mirrors (c) how clear the view is (d) the same light
35. 35.🔍 Which is the odd one out? (a) dark soil (b) a mirror (c) a dull brick (d) black cloth
36. 36.True or false: a pencil is needed for the periscope. (a) False (b) True
37. 37.🔮 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
38. 38.🔭 Why must the two mirrors face each other and be parallel? (a) so it can float (b) so it looks shiny (c) so light reaches the eye (d) to make it heavy
39. 39.🔭 How many mirrors does a simple periscope use?
40. 40.⚖️ 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) how clear the view is (c) the same carton

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