Unit 2 Review guide

Front

What type of galaxy is the Milky Way?

Back

The Milky Way is a Barred Spiral galaxy.

Front

In which position in Earth's orbit around the Sun does the Northern hemisphere experience winter?

Back

The Northern hemisphere experiences winter at Aphelion, which is around July 4.

Front

What type of structure is found at the center of the Milky Way Galaxy?

Back

At the center of the Milky Way Galaxy, there is a massive black hole.

Front

Does the force of gravity increase with an increase in mass?

Back

True, the force of gravity increases with an increase in mass.

Front

What phase was the moon in on June 18th?

Back

The moon was in the Waning Gibbous phase on June 18th.

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 difference between Aphelion and Perihelion?

Back

Aphelion is the point in Earth's orbit farthest from the Sun, while Perihelion is the point closest to the Sun.

Front

What is a black hole?

Back

A black hole is a region of space where the gravitational pull is so strong that nothing, not even light, can escape from it.

Front

What is the significance of the Milky Way's spiral arms?

Back

The spiral arms of the Milky Way are regions of higher density where stars are formed and contain a lot of gas and dust.

Front

What is the role of gravity in the formation of galaxies?

Back

Gravity pulls together gas and dust to form stars and galaxies, influencing their structure and evolution.