Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 340 · 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.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) flipped left to right (c) in colour (d) upside down only
2. 2.⚖️ 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) False (b) True
3. 3.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
4. 4.True or false: a rough wooden board reflects light well. (a) False (b) True
5. 5.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
6. 6.⚖️ 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) True (b) False
7. 7.⚖️ 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) False (b) True
8. 8.🧺 Which of these is needed for the periscope? (a) vinegar (b) a magnet (c) a battery cell (d) a ruler
9. 9.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) a battery cell (c) an empty juice carton (d) a magnet
10. 10.⚖️ 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
11. 11.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) a ruler (c) a battery cell (d) sticky tape
12. 12.🔍 Which is the odd one out? (a) a mirror (b) a rough wooden board (c) aluminium foil (d) still clear water
13. 13.⚖️ 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 angle of the mirrors (c) the same light
14. 14.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) taller walls (b) nothing at all (c) the ground (d) only short walls
15. 15.🔭 Which of these reflects light poorly? (a) a mirror (b) still clear water (c) black cloth (d) aluminium foil
16. 16.📘 Light bouncing off a mirror is called ___. (a) reflection (b) evaporation (c) refraction (d) magnetism
17. 17.🔍 Which is the odd one out? (a) a dull brick (b) a mirror (c) dark soil (d) black cloth
18. 18.⚖️ 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 change it (c) we measure it
19. 19.⚖️ 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
20. 20.🔭 What does a periscope let you do? (a) see germs (b) hear far sounds (c) see in the dark (d) see over a wall
21. 21.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is what we measure. (a) False (b) True
22. 22.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a pencil (c) turmeric powder (d) a ruler
23. 23.🔭 Which of these reflects light well? (a) black cloth (b) a rough wooden board (c) still clear water (d) a dull brick
24. 24.⚖️ 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
25. 25.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) yeast (c) two small mirrors (d) a ruler
26. 26.🧺 Which of these is not needed for the periscope? (a) a ruler (b) a magnet (c) a pencil (d) sticky tape
27. 27.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) two pictures (c) a rainbow (d) only darkness
28. 28.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) two small mirrors (c) an empty juice carton (d) a magnet
29. 29.🔭 Who uses a periscope to look above the water? (a) a farmer (b) a baker (c) a submarine crew (d) a pilot in a plane
30. 30.⚖️ 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 angle of the mirrors (c) how clear the view is (d) the same mirrors
31. 31.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) still clear water (c) dark soil (d) a mirror
32. 32.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
33. 33.True or false: two small mirrors is not needed for the periscope. (a) True (b) False
34. 34.True or false: two small mirrors is needed for the periscope. (a) True (b) False
35. 35.True or false: still clear water reflects light poorly. (a) False (b) True
36. 36.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) a friend who is running (c) nobody needs to (d) a grown-up
37. 37.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the object we look at (b) the angle of the mirrors (c) the same carton (d) how clear the view is
38. 38.⚖️ 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 change it (c) we measure it
39. 39.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) vinegar (c) an empty juice carton (d) two small mirrors
40. 40.🔭 How many times does light bounce off a mirror in a simple periscope?

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