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4. (a) State two advantages of using a camera, rather than the unaided eye, for studying stars - Edexcel - GCSE Physics - Question 4 - 2015 - Paper 1
Question 4
4. (a) State two advantages of using a camera, rather than the unaided eye, for studying stars. (b) Galileo observed the moons of Jupiter. Explain how these observ... show full transcript
Worked Solution & Example Answer:4. (a) State two advantages of using a camera, rather than the unaided eye, for studying stars - Edexcel - GCSE Physics - Question 4 - 2015 - Paper 1
Step 1
State two advantages of using a camera, rather than the unaided eye, for studying stars.
Answer
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Permanent Record: A camera captures images that can be stored and analyzed later, allowing for detailed study over time.
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Increased Sensitivity: Cameras can detect light that is beyond the visible spectrum, thereby allowing astronomers to observe faint celestial objects that may not be visible to the naked eye.
Step 2
Explain how these observations helped to change scientists' ideas about the Universe.
Answer
Galileo's observations of the moons of Jupiter provided clear evidence against the geocentric model of the Universe, which posited that all celestial bodies revolve around the Earth. By observing these moons orbiting Jupiter, he demonstrated that not all objects in the sky revolve around the Earth, supporting the heliocentric model proposed by Copernicus, where objects orbit around the Sun.
Step 3