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Edexcel GCSE Physics Astronomy Exam Questions and Answers
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Edexcel GCSE Physics Astronomy Exam Questions and Answers
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Edexcel GCSE Physics Astronomy ExamQuestions and Answers
What is the equation for weight? - Correct Answer ✅
Weight = mass x gravitational field strength
What is the big bang theory? - Correct Answer ✅ It says
that the universe started out as a tiny point of concentrated
energy. The universe expanded from this point and kept on
expanding
What is red shift? - Correct Answer ✅ When the
wavelengths from distant galaxies shift towards the red end
of the spectrum in order to be longer than they should be- an
increase in wavelength.
Some galaxies show greater red shift than others. Explain
what this suggests about the universe? - Correct Answer ✅
It suggests that the universe is expanding and some galaxies
are moving faster than others.
Explain what data can be collected and processed using
modern telescopes. - Correct Answer ✅ Different
wavelengths or frequencies are collected because telescopes
are positioned above earths atmosphere.
, Edexcel GCSE Physics Astronomy Exam
Questions and Answers
When astronomers study distant galaxies, they notice change
in them describe those changes. - Correct Answer ✅ the
wavelength increases and frequency decreases for galaxies
more distant.
Describe the life cycle of a star that is similar in mass to our
sun - Correct Answer ✅ It starts off as a nebula which is a
cloud of dust and hydrogen gas. Its pulled together by gravity
It forms into a main sequence star where hydrogen is
converted into helium, nuclear fusion, and light and heat is
produced. This then turns into a red giant where the star
expands and hydrogen runs out. the star gets colder and
uses up all its helium. This eventually collapses into a white
dwarf, it becomes very small and dense.
what is a supernova? - Correct Answer ✅ The explosion of
a massive star
The spitzer telescope stays behind the earth to hid from the
sun, why? - Correct Answer ✅ This is because the spitzer
observes infrared and infrared is heat. The sun produces
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