DCSG Y9 Astrophysics True of False

A galaxy is a collection of a few stars that makes a particular pattern in the night sky

• True

• False

There are roughly a few million galaxies in the universe

• True

• False

In the Solar System, planets move in roughly circular orbits around the Sun

• True

• False

The majority of planets in the Solar System have moons

• True

• False

The larger the planet in the Solar System, the stronger its surface gravitational field

• True

• False

The Earth is a satellite

• True

• False

Your mass would be less on the Moon

• True

• False

The Moon does not fall to the Earth because it has escaped the Earth’s gravitational field

• True

• False

For a satellite to move in a circle at constant speed, the forces on it must all be balanced

• True

• False

A geostationary satellite does not move

• True

• False