Astronomy: Scale Size and Gravity

Question 1

True or false: Gravity keeps the milky way galaxy together.

Accepted Answer

True

Question 2

Why is the earth's gravity stronger than the moon's gravity?

Accepted Answer

The earth is more massive than the moon

Question 3

What is at the center of most galaxies?

Accepted Answer

a black hole

Question 4

What effect does the moon's gravity have on the earth?

Accepted Answer

It causes the tides

Question 5

In an accurate scale model, if the sun were the size of a basketball, then the Earth could be:

Accepted Answer

too small to be seen.

Question 6

What is wrong with most models of the solar system?

Accepted Answer

They don't show both accurate size and distance to scale.

Question 7

True or False: your mass would be the same on all planets.

Accepted Answer

True

Question 8

Which of these would have the strongest gravitational pull?

Accepted Answer

a large, dense star

Question 9

The strength of a gravitational force depends on:

Accepted Answer

mass and distance

Question 10

As you travel farther away from the sun, the distance between the planets:

Accepted Answer

gets greater

Question 11

You can create an accurate scale model of the solar system on a football field.

Accepted Answer

False

Question 12

As you travel farther away from the earth, the earth's gravitational pull would:

Accepted Answer

become less

Question 13

Which of the following is the largest planet?

Accepted Answer

Jupiter

Question 14

Where would you weigh the most?

Accepted Answer

Jupiter

Question 15

True or False: The sun's great mass keeps the planets in orbit around the sun.

Accepted Answer

True

Question 16

What would happen to galaxies without gravity?

Accepted Answer

They would fall apart

Question 17

Gravity is...

Accepted Answer

a force

Question 18

The Milky Way is a

Accepted Answer

spiral galaxy

Question 19

Which planet is located closest to the sun?

Accepted Answer

Mercury

Question 20

Which planet is located farthest from the sun?

Accepted Answer

Neptune

Questions 20