TEKS 8.8

The Milky Way galaxy is described as a disk of stars orbiting a central point on the disk. Which of these best explains why people on Earth cannot see the entire shape of the Milky Way?

• Earth is a part of this galaxy.

• Many more stars exist outside the galaxy.

• The stars in the center of the galaxy are extremely small.

• The center of the galaxy consists of a dense cluster of stars.

What is the main element in a stars composition? 

• Hydrogen 

• Helium 

• Lithium 

• Heavy Elements 

Tags

NGSS.HS-ESS1-1

The main elements in a star's composition are _______ and ________.

• hydrogen, helium

• carbon, helium

• hydrogen, iron

• helium, dark matter

Tags

NGSS.HS-ESS1-3

______ is a force that causes dust particles to stick together in a nebula.

• nuclear fusion

• gravity

• hydrogen

• iron

Tags

NGSS.HS-PS2-4

Which star is considered a Main Sequence Star?

• A

• B

• C

• D

Tags

NGSS.HS-ESS1-1

Which star has the lowest temperature?

• A

• B

• C

• D

Tags

NGSS.HS-ESS1-3

An interstellar cloud of dust and gases that serves as a location for the formation of a new star is -

• a nebula.

• a galaxy.

• a black hole.

• a supernova.

The Hertzsprung-Russell diagram is provided, which is used for classifying stars based on the relationship between the brightness, temperature, and color of the star. Regulus belongs in which of the following classifications?

• Super Giant

• Giant

• Main Sequence

• White Dwarf

Tags

NGSS.HS-ESS1-3

A system of stars held together by gravitational attraction between gas and dust is called

• an asteroid.

• a nebula.

• a galaxy.

• the universe.

Tags

NGSS.MS-ESS1-2

Stars are made mostly of which two elements?

• Selenium and sodium

• Astatine and arsenic

• Chlorine and cesium

• Hydrogen and helium

Tags

NGSS.HS-ESS1-1