Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 295 · 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.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) yeast (c) two small mirrors (d) an empty juice carton
2. 2.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) a balloon (c) sticky tape (d) a ruler
3. 3.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) a ruler (c) turmeric powder (d) sticky tape
4. 4.🔭 Why must the two mirrors face each other and be parallel? (a) to make it heavy (b) so light reaches the eye (c) so it can float (d) so it looks shiny
5. 5.🧺 Which of these is needed for the periscope? (a) vinegar (b) a magnet (c) an empty juice carton (d) turmeric powder
6. 6.🔮 Predict: you cover the top mirror with paper. What do you see? (a) only darkness (b) a rainbow (c) two pictures (d) a brighter view
7. 7.⚖️ 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 carton (b) the angle of the mirrors (c) the same mirrors (d) the object we look at
8. 8.🔭 How many mirrors does a simple periscope use?
9. 9.🔭 Which of these reflects light well? (a) dark soil (b) aluminium foil (c) a dull brick (d) black cloth
10. 10.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
11. 11.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we change it (b) we measure it (c) we keep it the same
12. 12.📘 Light bouncing off a mirror is called ___. (a) reflection (b) magnetism (c) evaporation (d) refraction
13. 13.🔍 Which is the odd one out? (a) a shiny steel plate (b) black cloth (c) still clear water (d) aluminium foil
14. 14.🧺 Which of these is not needed for the periscope? (a) a ruler (b) an empty juice carton (c) a pencil (d) a magnet
15. 15.🔭 Which of these reflects light well? (a) a dull brick (b) a rough wooden board (c) dark soil (d) a shiny steel plate
16. 16.True or false: a magnet is needed for the periscope. (a) True (b) False
17. 17.🔭 Does dark soil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
18. 18.⚖️ 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
19. 19.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
20. 20.⚖️ 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) how clear the view is (d) the same mirrors
21. 21.🧺 Which of these is not needed for the periscope? (a) yeast (b) a pencil (c) two small mirrors (d) sticky tape
22. 22.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we measure it (b) we keep it the same (c) we change it
23. 23.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) the ground (b) only short walls (c) taller walls (d) nothing at all
24. 24.True or false: two small mirrors is needed for the periscope. (a) False (b) True
25. 25.True or false: a mirror reflects light poorly. (a) False (b) True
26. 26.🛟 You must never point a periscope or a mirror at ___. (a) the Sun (b) a wall (c) a friend’s toy (d) a tree
27. 27.⚖️ 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
28. 28.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
29. 29.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 45 degrees (c) 180 degrees (d) 10 degrees
30. 30.⚖️ 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) False (b) True
31. 31.🛟 Who should cut the holes in the juice carton? (a) nobody needs to (b) the youngest child (c) a grown-up (d) a friend who is running
32. 32.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
33. 33.🔭 How many times does light bounce off a mirror in a simple periscope?
34. 34.⚖️ 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 measure it (c) we keep it the same
35. 35.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) sticky tape (c) vinegar (d) an empty juice carton
36. 36.True or false: yeast is not needed for the periscope. (a) False (b) True
37. 37.⚖️ 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
38. 38.True or false: dark soil reflects light well. (a) False (b) True
39. 39.🔭 Which of these reflects light well? (a) a dull brick (b) still clear water (c) black cloth (d) dark soil
40. 40.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed

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