What is within our solar system?
There is one star, the sun plus the eight planets and the dwarf’s planets that orbit around the sun natural satellites the moons that orbit planets are also part of the solar system
What is our solar system a small part of?
The Milky Way galaxy
How was the sun formed?
From a cloud of dust and gas ( nebula) pulled together by gravitational attraction
At the start of a stars life cycle what is the dust and gas drawn together by?
Gravity cause fusion reaction
What does the fusion reactions lead to?
An equilibrium between the gravitational collapse of a star and the expansion of a star due to fusion energy
What does a star go through?
A life cycle
What is the life cycle of a star determined by?
The size of the star
What do fusion processes in stars produce?
All of the naturally occurring elements
What are elements heavily than iron are produced in?
A supernove
What does the explosion of a massive star distribute?
The elements throughout the universe
What does gravity provide?
The force that allows planets and satellites (both natural and artificial) to maintain their circular orbits
What is the red shift effect?
There is an observed increase in the wavelength of light from most distant galaxies. The further away the galaxies the faster they are moving and the bigger the observed increase in wavelength
What doe the observed red shift provide evidence for?
That Soave itself ( the universe) is expanding and supports the big bang theory
What does the Big Bang theory suggests ?
That the universe began from a very small region that was extremely hot and dense
What do the observations of supermovae since 1998 suggest?
That distant galaxies are receding even faster
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P114
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4.1.1 Energy Changes In A System And The Ways Energy Is Stored Before And After Such Changes36
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P217
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Energy Changes In A System An The Ways Energis Stored Before And After Such Changes2
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4.1 Energy Changes In A System And The Ways Energy Is Stored Before And After Such Changes65
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4.2 Electricity108
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4.3 Particle Model Of Matter57
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4.4 Atomic Structure52
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4.5 Forces122
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4.7 Magnetism And Electromagnetism34
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4.6 Waves86
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4.8 Space Physics16
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Physics 2020 Paper 114
