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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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A camera can capture measurements over extended periods, allowing astronomers to gather data and create detailed records that can be analyzed later.
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Cameras can detect light from sources that are outside the visible spectrum, enabling the observation of gamma rays, ultraviolet light, and other wavelengths that the naked eye cannot see.
Step 2
Explain how these observations helped to change scientists’ ideas about the Universe.
Answer
Galileo's observations of the moons of Jupiter provided crucial evidence against the geocentric model, which posited that everything orbits around the Earth. By showing that moons could orbit a body other than Earth, he supported the heliocentric model, which favored the idea that planets, including Earth, orbit the Sun. This shifted the scientific consensus and encouraged further exploration of our solar system.
Step 3