Earth's Place in the universe(Oct.20)

Question 1

What does the Earth rotate around?

Answer 1

The Earth rotates around a star called the Sun.

Question 2

How far away is the Earth from the Sun in AU?

Answer 2

It is 30 to 50 Au away.

Question 3

How far away is the Oort cloud from the Sun in AU?

Answer 3

The Oort cloud is between 10 000 and 100 000 AU from the Sun. It’s also made up of 1000 billion comets.

Question 4

Distance between the Sun and the Kulper belt is?

Answer 4

40 AU= 6 000 000 000 km

Question 5

The Sun is one of 200 billion stars made up of the Milky way.
True or False.

Answer 5

True.

Question 6

Explain a galaxy.

Answer 6

A galaxy is a group of stars, along with gas and dust. There are billions of galaxies- some have a few millions of stars and others with over 1000 billion stars.

Question 7

The diameter of the Milky Way is?

Answer 7

130 000 LY.

Question 8

The Sun is located about 32 000 LY away from the center.

Answer 8

True

Question 9

What is a cluster of galaxies called?

Answer 9

The Local Group.

Question 10

The Local Group contains about 50 galaxies and covers an area of how many light years?

Answer 10

It covers an area of about 10 million LY.

Question 11

What is a group of galaxies hold together by?

Answer 11

Gravitational forces.

Question 12

The Local Group is part of a super cluster called the Local Supercluster. One Supercluster can contain billions of galaxies. The Local Supercluster covers a distance of 100 million LY.

Answer 12

True.