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hydrogen, helium and carbon
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∙ 11y ago
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Are stars holes in the sky?
No. Stars are massive balls of hydrogen and helium that produce heat and light through nuclear fusion. Our sun is a star, only appearing bigger and brighter because it is much closer to us.
How stars are there on the US flag?
there are 50 stars on the US flag
Do the Stars reflect the Suns light?
No, they also produce their own light through nuclear fusion. Only planets and moons reflect sunlight.No, Stars do not reflect the Sun's light. Every star in the universe creates and distributes it's own light through nuclear fusion, and does not reflect light. The stars you see in the sky at night are a result of light traveling millions of miles towards earth by their own light that they emitted, not the light that the sun produced and then reflected back towards us.
If nuclear fusion did not occur in stars how would that affect us on earth?
Since most of the energy we get from the Sun is the result of nuclear fusion, I guess that would mean that we would receive ALMOST NO energy from the Sun. We WOULD receive some energy as a result of the Sun contracting due to gravity, but that wouldn't last long.
What does the stars mean on the US flage?
the stars on the us flag represent the 50 states
Is it true that in the US you use fossil fuels for most of your electric energy?
Coal is the main fuel for electricity.
Why are fuels useful to us?
Fuels are useful to us. It is useful to us because we use it for our cars
What are the main differences between stars and the sun?
The sun is a star. Its different to us than other stars because it is the closest to our planet.
How is the sun different from the stars in the night sky?
The main difference between the sun and other stars is that the sun is much closer to us.
Are stars holes in the sky?
No. Stars are massive balls of hydrogen and helium that produce heat and light through nuclear fusion. Our sun is a star, only appearing bigger and brighter because it is much closer to us.
What was the main method of mapping in the US before the 1940's?
Using the stars to navigate
How is the sun different from the other stars in the night sky?
The main difference between the sun and other stars is that the sun is much closer to us.
What percentage of fossil fuels comes from fuels in the us?
80% now
What are benefits fission and fusion gives us?
Fission gives us electricity from nuclear power plants. Fusion gives us the sun
What is the difference between a main sequence and a red giant?
A main sequence star is a star that is not surprisingly on "the main sequence". This is the period when a star is fusing hydrogen into helium. Most stars you see in the night sky are main sequence stars.
What fossil fuels in US?
coal
Identify the three main types of fossil fuels used in the United States and state two ways we use fossil fuels today?
The three main types of fossil fuel used in the US (and everywhere):CoalOilNatural gas (methane).Two ways of using fossil fuels today:We burn fossil fuel to generate electricity.We burn oil to power vehicles (cars, trucks, trains, ships and planes).
