astronomy

Question 1

Stellar Nebula

Answer 1

A giant cloud of hydrogen gas where stars are formed.

Question 2

Average Star

Answer 2

Gravity and nuclear fusion push and pull, creating a star that is stable.

Question 3

Red Giant

Answer 3

An average star runs out of fuel (hydrogen) and expands roughly 100x bigger.

Question 4

Planetary Nebula

Answer 4

Gas in the outer layer of the star is blown off.

Question 5

White Dwarf

Answer 5

The leftover core of a red giant (small, dense, no fusion).

Question 6

Massive Star

Answer 6

A star that burns hydrogen quickly, making it hot and blue.

Question 7

Red Supergiant

Answer 7

The massive star begins to run out of fuel, making it larger while building up heavier elements.

Question 8

Supernova

Answer 8

A violent explosion.

Question 9

Neutron Star

Answer 9

A very dense object that spins and has a giant magnetic field; what remains after a supernova.

Question 10

Black Hole

Answer 10

If a red supergiant is crushed, the force of gravity is so strong that not even light can escape, forming a black hole.

Question 11

Nuclear Fusion

Answer 11

Under very great pressure near the core of a star, the nuclei of atoms are forced so close to each other that they join together and release a tremendous amount of energy.