Earth Science Ch 25 Test Review

states that the universe started with a big bang and has been expanding ever since

What is the distance that light travels in one year?

graph that shows the relationship between a star's temperature and its absolute magnitude

What type of galaxy includes galaxies that don't fit into other categories

What is the measure of the amount of light we receive on Earth?

large amounts of electrically charged gas are ejected from the Sun's corona

How long does it take light from the sun to reach Earth?

What are the two types of constellations?

what is the color of a star with a high temperature

states that the universe began with expansion and then contraction and it continues this way

What is the measure of the amount of light a star gives off?

Constellations that circle Polaris and are seen all year round are called __

What is the name of the Northern star?

What is a group of stars that forms a pattern in the sky that looks like a familiar object?

What is a large cloud of dust and gas?

areas on the Sun's surface that appear dark because they are cooler than the surrounding area

States that the universe has always has been the same as it is now

What is a large group of stars, gas, and dust held together by gravity

as wavelengths move toward Earth they are compressed and as they move away  they stretch out

The violent eruption of a gas

The apparent shift in the position of an object when viewed from two different positions

How many know constellations are there

The joining of hydrogen atoms to form helium atoms and releases energy is called

What type of galaxy is shaped like a 3D ellipse?

What is the brightness of the star called?

What is the outer most layer of of the sun's atmosphere called?

What is a huge, arching column of gas?

the lowest layer of the sun's atmosphere where light is given off

What is NOT a theory on the formation of the universe?