Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 218 · 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 of these is not needed for the periscope? (a) two small mirrors (b) a balloon (c) a ruler (d) sticky tape
2. 2.⚖️ 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 angle of the mirrors (c) the same carton (d) the object we look at
3. 3.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) the Sun (c) a tree (d) a wall
4. 4.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) sticky tape (c) a ruler (d) a balloon
5. 5.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
6. 6.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a ruler (c) sticky tape (d) a battery cell
7. 7.True or false: a pencil is needed for the periscope. (a) True (b) False
8. 8.🔭 Does dark soil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
9. 9.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) a magnet (c) yeast (d) an empty juice carton
10. 10.📘 Light bouncing off a mirror is called ___. (a) evaporation (b) reflection (c) magnetism (d) refraction
11. 11.True or false: a dull brick reflects light well. (a) True (b) False
12. 12.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is the one thing we change. (a) True (b) False
13. 13.⚖️ 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
14. 14.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
15. 15.🔭 Which of these reflects light well? (a) dark soil (b) still clear water (c) a rough wooden board (d) black cloth
16. 16.🧺 Do we need a balloon for the periscope? (a) not needed (b) needed
17. 17.⚖️ 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
18. 18.True or false: a dull brick reflects light poorly. (a) True (b) False
19. 19.🔭 How many mirrors does a simple periscope use?
20. 20.🧺 Which of these is needed for the periscope? (a) a ruler (b) turmeric powder (c) vinegar (d) a magnet
21. 21.🔍 Which is the odd one out? (a) a mirror (b) dark soil (c) a rough wooden board (d) black cloth
22. 22.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
23. 23.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed
24. 24.🔭 How many times does light bounce off a mirror in a simple periscope?
25. 25.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
26. 26.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
27. 27.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
28. 28.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) how clear the view is (b) the same light (c) the angle of the mirrors
29. 29.🔭 Which of these reflects light poorly? (a) still clear water (b) aluminium foil (c) a mirror (d) black cloth
30. 30.🛟 Who should cut the holes in the juice carton? (a) nobody needs to (b) a friend who is running (c) the youngest child (d) a grown-up
31. 31.⚖️ 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
32. 32.⚖️ 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 change it (c) we keep it the same
33. 33.🔍 Which is the odd one out? (a) a shiny steel plate (b) black cloth (c) a mirror (d) still clear water
34. 34.True or false: aluminium foil reflects light well. (a) True (b) False
35. 35.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) a brighter view (c) only darkness (d) a rainbow
36. 36.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) flipped left to right (c) upside down only (d) in colour
37. 37.⚖️ 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 mirrors (c) the same light (d) how clear the view is
38. 38.True or false: turmeric powder is not needed for the periscope. (a) True (b) False
39. 39.True or false: a mirror reflects light poorly. (a) True (b) False
40. 40.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a ruler (c) sticky tape (d) turmeric powder

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