Vocabulary
A force that acts on a body moving in a circular path and is directed toward the center around which the body is moving
What is centripetal force?
Proposed the Heliocentric model
Stars and planets form from interstellar clouds. They mainly contain these elements.
What are hydrogen and helium?
Smallest planet in our solar system and has the fastest revolution
What is Mercury?
Gaseous Giant with a unique tilt
What is Uranus?
Material that remained after the formation of planets and satellites
What is debris?
Has three laws about Planetary Motion
Who is Kepler?
The force that describes the collapse of an interstellar cloud, where the collapse is slow, then gradually accelerates.
What is centripetal force?
Known as the "Red" Planet, has a very thin atmosphere
What is Mars?
Known for its rings and has a RAPID rotation (1 "day" is equal to 10.7 Earth hours)
What is Saturn?
Retrograde Motion
What is the apparent backward movement of a planet?
First person to use a telescope to observe the sky, found that four moons orbit Jupiter
Who is Galileo?
As the interstellar cloud condenses and continues to spin, this is created.
What are planetesimals?
This planet has an extremely SLOW rotation (one "day" is 243 Earth days, one "year" is 225 Earth Days)
What is Venus?
This planet has the largest and most moons, also is home of the "Giant Red Spot"
What is Jupiter?
What is a heliocentric model?
Developed an understanding of gravity by observing falling objects
These planets formed through the merging of icy planetesimals that mostly contain lighter elements.
What are gas giants?
Only known planet to host life
What is Earth?
This ice giant is made of water, ammonia, and methane ices. It also is home to cryovolcanoes (volcanos with water instead of magma).
What is Neptune?
Astronomical Unit
Earth's distance from the sun
Kepler's 1st Law
What is each planet orbits the sun in an oval shape rather than a circle?
These planets formed from elements that resist vaporization, and are rocky and dense.
What are terrestrial planets?
What is Venus?
This planet orbits in a retrograde motion
What is Uranus?