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24 Cards in this Set
- Front
- Back
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Absolute Magnitude |
How bright a star really is |
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Apparent Magnitude |
How bright a star seems to be |
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Milky Way |
The spiral galaxy that Earth is part of |
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Local groups |
A cluster of 30 galaxies the milky way is part of |
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Microwaves |
electro magnetic waves
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Sunspots |
A dark area on the sun that is caused by twists and loops in the sun's magnetsic field
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Granules |
bright spots on the photosphere
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Nebula |
The first step in the life cycle of a star - a huge cloud of hydrogen, helium and tiny particles of dust
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Galaxy |
A group of stars, gas and dust
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Universe |
Everything that exists
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Fusion |
Energy produced on the sun when hydrogen particles crash into each other producing helium |
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Mass |
the amount of matter in an object |
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How does the suns energy travel |
In waves |
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Does the sun rotate? How do we know? |
Yes becuase groups of sunspots seem to move across the surface. |
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What are the four types of galaxies |
Spiral, Barred, Eliptical, Irregular |
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How does fossil fuel get energy |
sun |
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What are the layers of the sun |
Core, radiation zone, convection zone, corona, photosphere |
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What is the sequence of change for a star |
Nebula, protostar, main-sequence star, expanding star, red giant, planetary nebula, white dwarf |
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The sun is a yellow star. This means that its temperature is ______ |
cooler |
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Name three types of energy released by the sun |
Heat, light, radio waves |
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Explain how Earth depends on the sun |
Light for the Earth, gives energy to plants
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Name 4 things scientists look at to classify starts |
Size, magnitude, temperature, color |
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What temperature does a blue star have |
hot |
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What temperature does a red star have |
coolest |
