Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 453 · 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.⚖️ 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 measure it (c) we keep it the same
2. 2.True or false: yeast is needed for the periscope. (a) True (b) False
3. 3.True or false: black cloth reflects light poorly. (a) False (b) True
4. 4.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) an empty juice carton (c) a magnet (d) sticky tape
5. 5.🔭 How many times does light bounce off a mirror in a simple periscope?
6. 6.🧺 Which of these is not needed for the periscope? (a) a magnet (b) two small mirrors (c) a ruler (d) a pencil
7. 7.True or false: a dull brick reflects light well. (a) True (b) False
8. 8.🧺 Which of these is needed for the periscope? (a) two small mirrors (b) vinegar (c) yeast (d) turmeric powder
9. 9.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we measure it (b) we keep it the same (c) we change it
10. 10.🔭 Which of these reflects light well? (a) black cloth (b) a dull brick (c) dark soil (d) still clear water
11. 11.🔮 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
12. 12.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) how clear the view is (b) the same carton (c) the angle of the mirrors (d) the same light
13. 13.📘 Light bouncing off a mirror is called ___. (a) magnetism (b) evaporation (c) refraction (d) reflection
14. 14.⚖️ 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
15. 15.True or false: turmeric powder is not needed for the periscope. (a) False (b) True
16. 16.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) a tree (c) the Sun (d) a friend’s toy
17. 17.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) a ruler (c) an empty juice carton (d) a balloon
18. 18.⚖️ 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) True (b) False
19. 19.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) a pencil (c) a battery cell (d) sticky tape
20. 20.🔍 Which is the odd one out? (a) aluminium foil (b) a mirror (c) black cloth (d) still clear water
21. 21.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
22. 22.🔍 Which is the odd one out? (a) a dull brick (b) still clear water (c) aluminium foil (d) a mirror
23. 23.True or false: still clear water reflects light well. (a) False (b) True
24. 24.True or false: vinegar is needed for the periscope. (a) False (b) True
25. 25.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) two small mirrors (c) a ruler (d) yeast
26. 26.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
27. 27.🔍 Which is the odd one out? (a) dark soil (b) black cloth (c) a dull brick (d) a mirror
28. 28.🔍 Which is the odd one out? (a) still clear water (b) a mirror (c) a shiny steel plate (d) dark soil
29. 29.🔭 Who uses a periscope to look above the water? (a) a pilot in a plane (b) a farmer (c) a baker (d) a submarine crew
30. 30.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same carton (b) the same light (c) how clear the view is (d) the angle of the mirrors
31. 31.🔭 Why must the two mirrors face each other and be parallel? (a) so it looks shiny (b) so light reaches the eye (c) so it can float (d) to make it heavy
32. 32.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is kept the same. (a) True (b) False
33. 33.🧺 Which of these is not needed for the periscope? (a) yeast (b) sticky tape (c) a pencil (d) a ruler
34. 34.🔍 Which is the odd one out? (a) black cloth (b) dark soil (c) a shiny steel plate (d) a dull brick
35. 35.⚖️ 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
36. 36.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
37. 37.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) a rainbow (c) a brighter view (d) only darkness
38. 38.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed
39. 39.🔭 Which of these reflects light well? (a) a dull brick (b) dark soil (c) black cloth (d) a shiny steel plate
40. 40.True or false: yeast is not needed for the periscope. (a) True (b) False

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