Earth Science review units 1&2

Front

What will our sun become when it runs out of fuel?

Back

A red giant.

Front

What occurs when hydrogen nuclei fuse into helium nuclei?

Back

Energy is released.

Front

How will the spectra lines recorded on Earth be shifted for a light-emitting object that is moving neither toward nor away from Earth?

Back

They will not be shifted at all.

Front

What does longitude measure?

Back

Longitude measures from East to West.

Front

Are the largest stars always the hottest?

Back

False, the largest stars are not always the hottest.

Front

What is a supernova?

Back

A supernova is a powerful and luminous explosion of a star.

Front

What is a white dwarf?

Back

A white dwarf is a small, dense star that is the remnant of a low or medium mass star.

Front

What is a neutron star?

Back

A neutron star is the collapsed core of a massive supergiant star, composed mostly of neutrons.

Front

What is the significance of redshift in astronomy?

Back

Redshift indicates that an object is moving away from the observer, often used to measure the expansion of the universe.

Front

What is the difference between a red giant and a supernova?

Back

A red giant is a late stage in a star's life cycle, while a supernova is the explosive end of a massive star's life.