Nucleosynthesis

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

• 15 million ^oC

• 15 billion ^oC

• 150 million ^oC

• 1 million ^oC

Tags

NGSS.HS-ESS1-1

NGSS.HS-PS1-8

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

• not enough protons

• not enough electrons

• not enough protrons

• not enough neutrons

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

• Big Bang Nucleosynthesis

• Stellar Nucleosynthesis

• Supernova Nucleosynthesis

• Genonucleosynthesis

Tags

NGSS.HS-ESS1-3

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

• 15 billion ^oC

• 15 million ^oC

• 100 billion ^oC

• 100 million ^oC

Tags

NGSS.HS-ESS1-3

3 helium nuclei fuse to make _________.

• carbon

• lithium

• hydrogen

• phosphorous 

Tags

NGSS.HS-ESS1-1

NGSS.HS-PS1-8

Three elements made in the fusion of helium are ________________.

• hydrogen, helium, and lithium

• carbon, nitrogen, and oxygen

• helium, nitrogen, and oxygen

• carbon, nitrogen, and iron

Tags

NGSS.HS-ESS1-1

NGSS.HS-ESS1-3

NGSS.HS-PS1-8

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

• regenerates

• starts over burning hydrogen

• dies

• starts unmaking iron and goes backwards

Tags

NGSS.HS-ESS1-1

NGSS.HS-ESS1-3

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

• supernova

• superduper nova

• nova

• big bang

Tags

NGSS.HS-ESS1-3

How do elements like gold, copper, and lead end up on earth?

• they flow through sunshine to the earth

• as the earth gets close to a red giant, its gravity pulls these elements to the ground

• supernovae send these elements into the interstellar matter and they end up on earth from there

• these elements are made on earth by volcanic action

Tags

NGSS.HS-ESS1-3

What is needed to produce atoms heavier than iron?

• nuclear fission

• objects, such as comets, running into the star

• a supernova

• a solar flare