Earth Space Science Chapter 22 Review

The geocentric model of the solar system has the planets

• and the moon orbiting the sun.

• orbiting the sun and the moon orbiting Earth.

• and the moon and sun orbiting Earth.

• orbiting the sun and the sun orbiting Earth.

What does the heliocentric model of the solar system state?

• Earth and the other planets orbit the sun.

• All of the planets and the sun orbit Earth.

• Only the moon and Earth orbit the sun.

• The planets orbit Earth, which orbits the sun.

Who was the first person to propose a heliocentric model of the universe?

• Archimedes

• Aristarchus

• Ptolemy

• Galileo

After the Middle Ages, the astronomer who changed the model of the solar system by placing the sun at its center was

• Galileo.

• Ptolemy.

• Copernicus.

• Kepler.

Which astronomer discovered that the planets orbit the sun in oval-shaped paths called ellipses?

• Kepler

• Brahe

• Galileo

• Archimedes

Galileo's most important contribution to astronomy was his

• discovery of evidence that the sun is the center of the solar system.

• set of calculations of the size of each of the planets.

• discovery of the planet Mars.

• description of the behavior of moving objects.

Isaac Newton was the first person to formulate and test the law of

• universal gravitation.

• acceleration.

• orbital velocity.

• universal mass.

The spinning of Earth on its axis is called

• revolution.

• precession.

• rotation.

• perihelion.

What is Earth's motion in its path around the sun called?

• aphelion

• rotation

• precession

• revolution

What is precession?

• the tilt of Earth's axis in relation to the ecliptic

• the rotation of Earth as it moves around the sun

• the faster orbital velocity of the planet at perihelion

• the slow change in the direction in which Earth's axis tilts