P6-Solar system and Electromagnetism

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What is a galaxy?
A group of stars
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What are the 8 planets?
M,V,E,M,J,S,U,N
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Where is the solar system based?
In the milky way galaxy
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What type of satellites are moons?
Natural satellites
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What is the sun?
A star
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What is pluto?
A dwarf planet. Is also extremely small.
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Formation of stars. Step 1
Stars form from clouds of dust and gas called nebula
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Step 2
In Nebula, there is hydrogen gas
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Step 3
gravity causes cloud of dust and gas to collapse
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Step 4
Dust particles move faster,temperature rises
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Step 5
Collapsing cloud of hot gas and dust = protostar
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Step 6
If temp in protostar gets High enough. Hydrogen nuclei join to form helium
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Otherwise known as?
Nuclear fusion
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What happens in nuclear fusion
Releases a lot of energy. Protostar changes into a star.
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How does the star expand?
Nuclear fusion acts outwards
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How does the star collapse?
Gravity acts inwards
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How does the star stay in equilibrium?
Force of gravity acting inwards is balanced by outwards force of nuclear fusion
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Other cards in this set

Card 2

Front

What are the 8 planets?

Back

M,V,E,M,J,S,U,N

Card 3

Front

Where is the solar system based?

Back

Preview of the front of card 3

Card 4

Front

What type of satellites are moons?

Back

Preview of the front of card 4

Card 5

Front

What is the sun?

Back

Preview of the front of card 5
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