SC.8.E.5.3 - Galaxies : Hard

Front

What causes the stars to appear to move in the night sky?

Back

The stars seem to move because Earth is rotating on its axis.

Front

What is the main difference between terrestrial planets and gas giants?

Back

The main difference is the level of their density.

Front

What are comets primarily composed of?

Back

Comets are bodies of ice, stone, and organic compounds.

Front

Why did early 20th-century astronomers think the Milky Way was the entire universe?

Back

They thought this because spiral galaxies looked like clouds of gas and dust through telescopes due to their distance from Earth.

Front

What is a galaxy?

Back

A galaxy is a massive system that consists of stars, stellar remnants, interstellar gas, dust, and dark matter, bound together by gravity.

Front

What is the Milky Way Galaxy?

Back

The Milky Way Galaxy is the galaxy that contains our Solar System, characterized by its spiral shape.

Front

What are the Seven Sisters?

Back

The Seven Sisters is a group of seven stars located in the Taurus constellation.

Front

What is the role of gravity in galaxies?

Back

Gravity holds the stars and other matter together in a galaxy.

Front

What is a spiral galaxy?

Back

A spiral galaxy is a type of galaxy characterized by its spiral structure, with arms that extend outward from the center.

Front

What is the difference between a star and a planet?

Back

A star is a luminous celestial body made of plasma, while a planet is a celestial body that orbits a star and does not produce its own light.