Earth's Place in Space Quiz

What is a model?

• A type of star

• A type of planet

• A type of telescope

• A way of representing a system of ideas

Which of these best describes a geocentric model?

• The sun is actually just one star of many billions orbiting the center of our own galaxy

• The Earth and all the other planets revolve around the sun

• The Earth is a stationary object around which all of the universe revolves

• The Earth spins on its axis

What is the heliocentric model?

• The sun is actually just one star of many billions orbiting the center of our own galaxy

• The Earth is a stationary object around which all of the universe revolves

• The Earth and all the other planets revolve around the sun

• The Earth spins on its axis

Why did astronomers add smaller cycles within the planets' orbits around the Earth in the geocentric model?

• To make the model less useful

• To explain the motion of the sun

• To make the model more complicated

• To match the model to the observations

What explains why celestial objects appear to rise and set over the course of a day?

• The spinning of the Earth

• The revolution of the Earth around the sun

• The motion of the sun in the sky

• The motion of the stars in the sky

What is the heliocentric model a better job of explaining and predicting?

• The motion of the planets

• The motion of the sun

• The motion of the stars

• The solar system

What is the Earth's place in space according to the heliocentric model?

• The Earth spins on its axis

• The Earth is a stationary object around which all of the universe revolves

• The Earth and all the other planets revolve around the sun

• The sun is actually just one star of many billions orbiting the center of our own galaxy