Solar System Test

____________ model is where the Earth is the center and all planets revolve around it. 

• Heliocentric

• Paleocentric

• Geocentric

• Endocentric

Who first developed the geocentric model in 100-170 AD?

• Galileo

• Ptolemy

• Copernicus

• Kepler

_____________ model is where the sun is in the center and all other planets revolve around it. 

• Geocentric

• Paleocentric

• Egocentric

• Heliocentric

Who first developed the heliocentric model in 310-230 BC?

• Kepler

• Galileo

• Aristarchus

• Ptolemy

This Polish astronomer further developed the heliocentric model in 1543. Even with his researched theory, many people needed more evidence to be convinced.

• Copernicus

• Ptolemy

• Aristarchus

• Kepler

Who discovered that orbits of the planet were not perfectly circular paths, but rather in the shape of an ellipse in the late 1500s?

• Ptolemy and Aristarchus

• Brahe and Kepler

• Galileo and Copernicus

__________ is the paths planets take around the sun.

• Orbit

• Ellipse

• Sphere

_________ is an oval shape.

• Orbit

• Ellipse

• Spheroid

Who finally proved in 1610 that the planets do orbit around the sun?

• Copernicus

• Kepler

• Galileo

• Ptolemy

How many moons did Galileo discover that orbited around Jupiter?

• 1

• 2

• 3

• 4