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24 Cards in this Set

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Absolute Magnitude

How bright a star really is

Apparent Magnitude

How bright a star seems to be

Milky Way

The spiral galaxy that Earth is part of

Local groups

A cluster of 30 galaxies the milky way is part of

Microwaves

electro magnetic waves

Sunspots

A dark area on the sun that is caused by twists and loops in the sun's magnetsic field

Granules

bright spots on the photosphere

Nebula

The first step in the life cycle of a star - a huge cloud of hydrogen, helium and tiny particles of dust

Galaxy



A group of stars, gas and dust

Universe



Everything that exists

Fusion

Energy produced on the sun when hydrogen particles crash into each other producing helium

Mass

the amount of matter in an object

How does the suns energy travel

In waves

Does the sun rotate? How do we know?

Yes becuase groups of sunspots seem to move across the surface.

What are the four types of galaxies

Spiral, Barred, Eliptical, Irregular

How does fossil fuel get energy

sun

What are the layers of the sun

Core, radiation zone, convection zone, corona, photosphere

What is the sequence of change for a star

Nebula, protostar, main-sequence star, expanding star, red giant, planetary nebula, white dwarf

The sun is a yellow star. This means that its temperature is ______

cooler

Name three types of energy released by the sun

Heat, light, radio waves

Explain how Earth depends on the sun

Light for the Earth, gives energy to plants

Name 4 things scientists look at to classify starts

Size, magnitude, temperature, color

What temperature does a blue star have

hot

What temperature does a red star have

coolest