Q2 review

Front

What are galaxies?

Back

Massive systems of stars, stellar remnants, interstellar gas, dust, and dark matter bound together by gravity.

Front

How do astronomers measure distances to the stars?

Back

By using parallax measurements.

Front

What 2 regions of space extend past the orbit of Neptune?

Back

Kuiper Belt and Oort Cloud.

Front

What do the 4 inner planets have in common?

Back

They are all terrestrial planets.

Front

Which layer of the sun’s atmosphere is known as the color sphere?

Back

Chromosphere.

Front

What is the difference between terrestrial planets and gas giants?

Back

Terrestrial planets are rocky and solid, while gas giants are composed mostly of gases and lack a solid surface.

Front

What is the main component of the Milky Way galaxy?

Back

A large collection of stars, gas, dust, and dark matter.

Front

What is parallax in astronomy?

Back

The apparent shift in position of a nearby star against distant background stars as observed from different positions of Earth.

Front

What is the Kuiper Belt?

Back

A region of the solar system beyond Neptune, filled with small icy bodies and dwarf planets.

Front

What is the Oort Cloud?

Back

A theoretical cloud of icy objects that is believed to surround the solar system at a great distance.