Unit Test — Unit test Answers

25 verified answers

How was Aristotle’s model similar to Ptolemy’s model?

Both models stated that the planets rotate on their axes.

Both models stated that Earth is the center of the system around which other objects orbit.

Both models stated that the planets and objects in the solar system have small orbits called epicycles.

Both models stated that the Sun is the center of the system around which objects have elliptical orbits.

Which statement accurately describes a light-year?

It is the shape of a galaxy.

It is the distance that light travels in a year.

It is a yearly measurement of light given off by stars.

It is the amount of time it takes light to travel one million kilometers.

Which phrase describes the composition of the outer planets?

are gaseous

contain water

have high densities

are made mostly of liquid

Which event occurs during high tide?

All of Earth’s ocean levels rise.

The moon’s orbit is closer to Earth.

The gravity of the Sun and moon cause the Earth’s crust and water to bulge.

Earth’s crust and water are being pulled in opposite directions by the Sun and moon.

Look at the diagram of the moon and three different paths that it could take.

the path of the moon toward the Sun

the path of the moon’s orbit around Earth

the path the moon would take if it had a larger mass than the Sun

the path the moon would take if there was no force of Earth’s gravity

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