Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 478 · 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 “the same mirrors”? (a) we keep it the same (b) we measure it (c) we change it
2. 2.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
3. 3.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) only darkness (c) a brighter view (d) a rainbow
4. 4.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
5. 5.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) nobody needs to (c) a friend who is running (d) a grown-up
6. 6.📘 Light bouncing off a mirror is called ___. (a) refraction (b) evaporation (c) reflection (d) magnetism
7. 7.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a balloon (b) a ruler (c) sticky tape (d) two small mirrors
8. 8.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a ruler (c) vinegar (d) an empty juice carton
9. 9.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a ruler (c) two small mirrors (d) a battery cell
10. 10.⚖️ 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 light
11. 11.🔭 Why must the two mirrors face each other and be parallel? (a) so it can float (b) to make it heavy (c) so it looks shiny (d) so light reaches the eye
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) the same light (b) the same mirrors (c) the same carton (d) the angle of the mirrors
13. 13.True or false: two small mirrors is not needed for the periscope. (a) True (b) False
14. 14.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
15. 15.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is what we measure. (a) True (b) False
16. 16.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) still clear water (c) dark soil (d) a mirror
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 keep it the same (b) we change it (c) we measure it
18. 18.🔭 How many mirrors does a simple periscope use?
19. 19.🧺 Do we need a pencil for the periscope? (a) needed (b) not needed
20. 20.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is the one thing we change. (a) False (b) True
21. 21.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) a friend’s toy (c) the Sun (d) a tree
22. 22.⚖️ 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) False (b) True
23. 23.True or false: turmeric powder is not needed for the periscope. (a) True (b) False
24. 24.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same light (b) the same carton (c) the same mirrors (d) how clear the view is
25. 25.🔍 Which is the odd one out? (a) a dull brick (b) a mirror (c) aluminium foil (d) still clear water
26. 26.🧺 Do we need a magnet for the periscope? (a) not needed (b) needed
27. 27.🔭 Which of these reflects light well? (a) a dull brick (b) black cloth (c) dark soil (d) a shiny steel plate
28. 28.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
29. 29.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
30. 30.True or false: an empty juice carton is needed for the periscope. (a) True (b) False
31. 31.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) vinegar (c) a balloon (d) an empty juice carton
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? True or false: how clear the view is is what we measure. (a) True (b) False
34. 34.⚖️ 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
35. 35.🔍 Which is the odd one out? (a) black cloth (b) still clear water (c) dark soil (d) a dull brick
36. 36.True or false: dark soil reflects light poorly. (a) True (b) False
37. 37.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a magnet (c) a ruler (d) a pencil
38. 38.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
39. 39.True or false: black cloth reflects light well. (a) False (b) True
40. 40.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we change it (b) we measure it (c) we keep it the same

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