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Do Now. _____medium sized yellow star _____ how old is the sun _____ loops of gas that jump from sunspots _____ visible surface of the sun _____ small dense areas of gas that are cooler than the gases around it. 1. What are stars?.
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Do Now _____medium sized yellow star _____how old is the sun _____loops of gas that jump from sunspots _____ visible surface of the sun _____small dense areas of gas that are cooler than the gases around it
1. What are stars? Stars are huge, hot brilliant balls of gases (trillions of km away from Earth).
2. What is the composition of stars? • Stars are made of gases that are so dense they act like a solid.
3. How is the composition of a star identified? • The composition of a star is identified by its color by using a spectrograph that spreads starlight out.
4. What is temperature? • Temperature is the measure of how hot or cold something is.
5. How is temperature of a star measured? • Stars are classified by color and brightness.
6. What is the range of temperatures of stars? • The hottest stars are blue. • The coolest stars are red.
7. Do stars move as planets move? • No, the planets revolve around the sun which makes it appear that stars move. • Stars do rotate
ThinkPairShare • How can you tell the difference between stars and planets in the night sky?
