3rd Nine Weeks Review

The geocentric model states that

• the Sun and planets revolve around Earth.

• Earth and planets revolve around the Sun.

• the Sun and Earth revolve around the Moon.

• Earth and the Moon revolve around the planets.

Ptolemy and Copernicus were early astronomers. Ptolemy believed that Earth was the center of the solar system and Copernicus believed that the Sun was the center of the solar system. Which model would the astronomers most likely use to support their beliefs?

• Ptolemy and Copernicus would both use the geocentric model.

• Ptolemy and Copernicus would both use the heliocentric model

• Ptolemy would use the geocentric model and Copernicus would use the heliocentric model.

• Ptolemy would use the heliocentric model and Copernicus would use the geocentric model.

The diagrams show two models.

Which statement best describes both models?

• Model X is the heliocentric model in which Earth is the center of the solar system; model Y is the geocentric model in which the Sun is the center of the solar system.

• Model X is the geocentric model in which the Sun is the center of the solar system; model Y is the heliocentric model in which Earth is the center of the solar system

• Model X is the heliocentric model in which the Sun is the center of the solar system; model Y is the geocentric model in which Earth is the center of the solar system.

• Model X is the geocentric model in which Earth is the center of the solar system; model Y is the heliocentric model in which the Sun is the center of the solar system.

The diagram shows a timeline of important astronomers.

Ptolemy introduced the geocentric model of the solar system, which was highly influenced by Aristotle's ideas. Copernicus introduced the heliocentric model, which was adopted by the astronomers who followed. Based on this information, what did Aristotle and Galileo most likely believe about the solar system?

• Aristotle and Galileo believed Earth was the center of the solar system.

• Aristotle and Galileo believed the Sun was the center of the solar system.

• Aristotle believed Earth was the center of the solar system, and Galileo believed the Sun was the center of the solar system.

• Aristotle believed the Sun was the center of the solar system, and Galileo believed Earth was the center of the solar system.

What evidence exists to support the big bang theory?

• Earth orbits the Sun.

• Earth rotates on its axis.

• The universe is still constantly expanding.

• All objects in the universe are always growing.

The Milky Way has the most of which of the following objects in it?

• stars

• planets

• comets

• asteroids

Which group correctly lists structures in space from LARGEST to smallest?

• galaxy, Milky Way, planet, star

• star, galaxy, solar system, planet

• galaxy, solar system, planet, moon

• solar system, Milky Way, planet, galaxy

A spiral galaxy

• has an undefined shape that is constantly changing.

• has a bulging middle and arms that coil outwards.

• is flattened and elongated.

• is perfectly round.

Which image illustrates a spiral galaxy?

• 
• 
• 
• 

The illustration shows the Milky Way galaxy as seen from the side. At approximately which position is the solar system containing Earth located?

• W

• X

• Y

• Z