Galaxies

Front

What is the primary force that holds galaxies together?

Back

Gravitational attraction.

Tags

NGSS.HS-PS2-4

Front

What is the term for the vast space that contains all matter and energy?

Back

Universe.

Front

What type of galaxy is characterized by a spiral structure?

Back

Spiral galaxy.

Front

What color of stars is typically the brightest according to the Hertzsprung-Russell Diagram?

Back

Blue stars.

Front

What are the three main types of galaxies?

Back

Spiral, elliptical, and irregular galaxies.

Front

What is the difference between a spiral galaxy and an elliptical galaxy?

Back

Spiral galaxies have a flat, rotating disk with arms, while elliptical galaxies are more rounded and lack the distinct structure of spiral arms.

Front

What is the significance of the Hertzsprung-Russell Diagram in astronomy?

Back

It classifies stars based on their luminosity and temperature.

Front

What is dark matter and its role in galaxies?

Back

Dark matter is a form of matter that does not emit light or energy, and it is believed to make up a significant portion of the mass in galaxies, influencing their structure and behavior.

Front

What is a galaxy cluster?

Back

A galaxy cluster is a large group of galaxies held together by gravity.

Front

How do galaxies evolve over time?

Back

Galaxies can evolve through processes such as mergers, interactions with other galaxies, and the formation of new stars.