Astronomy II - Content Review

Our solar system is referred to as heliocentric, that means the Earth __________.

• rotates around the sun.

• revolves around the sun.

• has a moon.

• has life.

What question can be best answered by looking at the models?

• Why is Model 1 called the Geocentric Model and why is Model 2 called the Heliocentric Model?

• Why is Model 1 called the Heliocentric Model and why is Model 2 called the Heliocentric Model?

• Which planet is the largest?

• Where is the asteroid belt located?

Which of the following best explains how Ptolemy’s and Copernicus’s models of the solar system differed?

• Ptolemy’s views of the solar system were rejected, but Copernicus’ views were widely accepted.

• Ptolemy did not have an explanation for why planets would seem to move backwards, but Copernicus did.

• Ptolemy believed in the geocentric solar system, while Copernicus believed in the heliocentric solar system.

• Ptolemy believed everything revolved around the Sun, while Copernicus believed everything revolved around the Earth.

A science class has been researching early models of the solar system. Each model shows the positions of the planets in relation to the earth and sun. The students cannot agree on which model best represents the modern day understanding of the solar system. Which student has the BEST explanation?

• Karissa stated the model 1 was the correct model, since the planets rotate around the Earth.

• Jeff stated the model 2 was the correct model, since the planets revolve around the sun.

• Jessie stated the model 1 was the correct model, since the planets rotate around sun.

• Nicole stated the model 1 was the correct model, since the planets revolve around the Earth.

Many scientists accepted the model that all objects in the universe revolve around the Sun. What did they learn that made them change this model?

• Stars do not revolve around the Sun.

• Planets do not revolve around the Sun.

• Comets do not revolve around the Sun.

• Asteroids do not revolve around the Sun.

The Big Bang Theory is _______________________________.

• The theory that states that the universe began with a collapse of matter

• The theory that states that the universe began with the explosion of matter

• The theory of the beginning of black holes

• The theory of the beginning of Earth’s ocean

Where is our solar system located?

• On one of the Milky Way’s spiral arms

• On the outermost edge of the Milky Way galaxy

• In the center of the Milky Way galaxy

• Near the Milky Way galaxy

Since the big bang occurred, the universe has continued to ________________.

• shrink in size.

• warm up.

• expand in size.

• stay the same size.

What is the correct order of size from largest to smallest?

• Universe, galaxy, solar system

• Galaxy, solar system, universe

• Solar system, galaxy, universe

• Galaxy, universe, solar system

A galaxy is a _________________________________.

• Collection of billions of stars

• Collection of billions of black holes

• Collections of billions of universes

• None of the above