nucleosynthesis

The temperature in a supernova can reach ___________ and allows the heavier elements to form (along with abundant neutrons).

10 billion c

It takes a temperature of ___________ to fuse the nuclei of elements.

15 million c

How many types of nucleosynthesis are there?

3

The key ratio found in the universe that confirms the Big Bang is _______ hydrogen and ______helium.

75%, 25%

A star will spend ______ of it's life turning hydrogen into helium.

90%

The first elements were formed in what is known as?

big bang nucleosynthesis

3 helium nuclei fuse to make _________.

carbon

Three elements made in the fusion of helium are ________________.

carbon, nitrogen, and oxygen

When a star builds up too much iron, it ______.

dies

A star begins it's life made out of ____________.

hydrogen and helium

The two elements formed in Big Bang Nucleosynthesis where?

hydrogen and helium

Stellar nucleosynthesis stops at the element of iron because there are ________________ in their nuclei.

not enough neutrons

The formation of elements is known as?

nucleosynthesis

____________ nucleosynthesis happens in the center of stars and is where the elements helium through iron (Fe) are formed.

stellar

The rest of the elements on the periodic table are cooked together in the massive star explosion called a ___________.

supernova

All elements bigger than iron on the periodic table are formed in _________________.

supernova nucleosynthesis