Astronomy Universe Unit Review

Front

What is the name of our galaxy?

Back

The Milky Way Galaxy.

Front

What significant event occurred more than 10 billion years ago?

Back

The Big Bang.

Front

What process occurs in the cores of main sequence stars?

Back

Lighter elements undergo fusion into heavier elements.

Front

What evidence supports the idea that the universe is expanding?

Back

The wavelengths of light from distant galaxies are shifted toward the red end of the spectrum because they are lengthened.

Front

True or False: A star's color is directly related to its temperature.

Back

True.

Front

What is the primary component of the Milky Way Galaxy?

Back

A vast collection of gas, dust, and stars.

Front

What is the significance of the Big Bang in the context of the universe?

Back

It marks the beginning of the universe and the expansion of space.

Front

How do scientists determine the temperature of a star?

Back

By analyzing its color; hotter stars appear blue, while cooler stars appear red.

Front

What is cosmic background radiation?

Back

The afterglow radiation from the Big Bang, providing evidence of the universe's early state.

Front

What is the life cycle of a star?

Back

It includes stages such as nebula, main sequence, red giant, and supernova or white dwarf.