Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 57 · 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.🛟 Who should cut the holes in the juice carton? (a) nobody needs to (b) the youngest child (c) a friend who is running (d) a grown-up
2. 2.🔍 Which is the odd one out? (a) still clear water (b) dark soil (c) a mirror (d) aluminium foil
3. 3.🔭 Which of these reflects light well? (a) a rough wooden board (b) black cloth (c) a shiny steel plate (d) a dull brick
4. 4.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) yeast (c) a ruler (d) an empty juice carton
5. 5.📘 Light bouncing off a mirror is called ___. (a) evaporation (b) refraction (c) magnetism (d) reflection
6. 6.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
7. 7.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
8. 8.🔭 How many times does light bounce off a mirror in a simple periscope?
9. 9.🔭 Which of these reflects light well? (a) a dull brick (b) still clear water (c) black cloth (d) dark soil
10. 10.True or false: a shiny steel plate reflects light poorly. (a) False (b) True
11. 11.⚖️ 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
12. 12.🔭 Why must the two mirrors face each other and be parallel? (a) so it looks shiny (b) so light reaches the eye (c) to make it heavy (d) so it can float
13. 13.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) the ground (b) taller walls (c) only short walls (d) nothing at all
14. 14.True or false: a rough wooden board reflects light poorly. (a) False (b) True
15. 15.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) sticky tape (c) two small mirrors (d) yeast
16. 16.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
17. 17.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the angle of the mirrors”? (a) we change it (b) we measure it (c) we keep it the same
18. 18.🧺 Which of these is needed for the periscope? (a) a balloon (b) a battery cell (c) a pencil (d) a magnet
19. 19.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
20. 20.🧺 Which of these is needed for the periscope? (a) vinegar (b) turmeric powder (c) an empty juice carton (d) a battery cell
21. 21.🧺 Do we need a balloon for the periscope? (a) not needed (b) needed
22. 22.🔍 Which is the odd one out? (a) still clear water (b) a rough wooden board (c) aluminium foil (d) a mirror
23. 23.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) in colour (c) flipped left to right (d) much bigger
24. 24.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same light (b) how clear the view is (c) the angle of the mirrors
25. 25.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) two small mirrors (c) a pencil (d) turmeric powder
26. 26.🔭 Who uses a periscope to look above the water? (a) a baker (b) a submarine crew (c) a pilot in a plane (d) a farmer
27. 27.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) vinegar (c) a ruler (d) sticky tape
28. 28.🔍 Which is the odd one out? (a) a mirror (b) aluminium foil (c) a shiny steel plate (d) black cloth
29. 29.True or false: yeast is needed for the periscope. (a) False (b) True
30. 30.🔭 How many mirrors does a simple periscope use?
31. 31.⚖️ 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) False (b) True
32. 32.🧺 Do we need sticky tape for the periscope? (a) needed (b) not needed
33. 33.🧺 Which of these is needed for the periscope? (a) yeast (b) a battery cell (c) a magnet (d) sticky tape
34. 34.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) two small mirrors (c) a pencil (d) a battery cell
35. 35.🧺 Which of these is needed for the periscope? (a) vinegar (b) a battery cell (c) two small mirrors (d) a balloon
36. 36.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) only darkness (c) two pictures (d) a brighter view
37. 37.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is what we measure. (a) True (b) False
38. 38.⚖️ 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 light (d) the same carton
39. 39.True or false: a ruler is needed for the periscope. (a) True (b) False
40. 40.🧺 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

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