Stars and the Universe

Blue stars are hotter than red stars.

• True

• False. Red stars are hotter.

• False. Yellow stars are hotter.

• False. Black stars are hotter.

Because quasars are so far away from our solar system, they are a window to the universe's future.

• True

• False. Because they are closer, they are a window to the past.

• False. Because they fly we can't see them.

• False. Because they are so far away, they are a window to the past.

Stars give off light as part of a nuclear fission reaction in which helium atoms are split into hydrogen atoms.

• True.

• False. Stars are fueled by nuclear fission with one hydrogen atom fused into a helium atom, giving off energy.

• False. Stars are fueled by nuclear fusion with two hydrogen atoms are fused into a helium atom, giving off energy.

• False. Stars are fueled by nuclear fusion with one hydrogen atom fused into a helium atom, giving off energy.

Tags

NGSS.HS-PS1-8

Most galaxies are isolated out in space.

• True.

• False. Most galaxies exist in cluster or superclusters.

• False. Most galaxies exist in cluster only.

• False. Most galaxies exist in superclusters only.

Before a star becomes a black hole, it explodes as a supernova.

• True

• False. It explodes into a star.

• False. It explodes into a planet.

• False. It explodes into a galaxy.

Some stars orbit a neighboring star as part of a binary star system.

• True

• False. Stars don't orbit each other.

• False. Stars orbit the planets only.

• False. Stars orbit the sun.

Massive blue stars use up their fuel supply much faster than other stars do.

• True

• False. They don't use their fuel up faster.

• False. They don't use fuel.

• False. They use their fuel slower than other stars.

The apparent shift in frequency of waves emitted by a moving source.

• Constellation

• Dopplar effect

• Pulsar

• Black hole

Tags

NGSS.HS-PS4-1

How bright a light appears to an observer.

• Apparent Magnitude

• Red giant

• parallax

• supernova

The death of a large star by explosion.

• Constellation

• Parallax

• Supernova

• Red giant