Solar Nebula Theory
Keplers Laws
Vocab
Observations of our Solar System
Planetary Motion
100

Once the nebula began collapsing what was created first?

What is our sun. First a protostar then a full star.  

100
Fill in the blank-Kepler's second law: When a body in orbit moves closer to the sun it goes __________, and when it moves away from the sun, it goes ____________.
What is When a body in orbit moves closer to the sun it goes faster, and when it moves away from the sun, it goes slower.
100
Define Nebula.
What is a large cloud of dust in interstellar space; a region in space where stars are born and where stars explode.
100
What is the center of our solar system?
What is the sun?
100
What does the Earth spin on?
What is an axis.
200

What happens when the nebula hits the sweet spot of temperature and gravity 

What is fusion begins.

200
Describe Keplers First Law.
What is : the planets orbit the sun on an elliptical path with the Sun at one focus.
200
The sister planet of the earth that resulted in the tilt of the earth and the moon being formed?

What is THEA

200
What is one Astronomical Unit.
What is the distance between Earth and the Sun
200
What is the path a body follows as it travels around another body in space?
What is orbit.
300
What does gravity do to elements around the Sun?
What is pulls larger elements closer to the sun, and smaller ones are kept farther away from the sun.
300
Describe Kepler's third law
What is planets farther away from the sun orbit slower than planets found closer to the sun.
300
Define planetessimals.
What is small planets.
300
Which planets are gas giants, and which planets are rocky planets.
What is Rocky Planets- Mercury, Venus, Earth, Mars. Gas Giants- Jupiter, Saturn, Uranus, Neptune.
300
Who discovered the Law of Universal Gravitation
Who is Isaac Newton
400
What clears the solar system of remaining gas and dust, and how was tis demonstrated?
What is Solar Wind.
400

Why do planets speed up when closer to the sun?

What is planets move faster due to the force of gravity increasing.

400

Defin Eccentricity.

What is how circular or oval a planets orbit is.

The shape of a planets orbit 

400

What is the shape of an orbit

What is an elliptical shape 

400

Describe the motion of the planet Earth

What is the earth is revolving around the sun while also spinning on an axis. Earth is also tilted at 23 degrees 

500
Describe how planets formed in our solar system.
What is dust particles collided to form planetessimals. Those planetessinmal collided to form planets. From there gas giants were formed where large amounts of hydrogen and helium are located, and rocky planets did not take on much gas and remained rocky.
500
What allowed Kepler to find the distance between a planet and the sun?
What is How long a planet takes to orbit around the sun.
500

Define Aphelion and perhelion.

What is Aphelion when a planet is furthest away from the sun, Perhelion when a planet is closest to the sun.

500
Describe the size, state ofmatter, and density of inner/terrestrial planets.
What is Size-small, state of matter-rocky crust, desne mantle, solid core, density- dense
500

Describe the importance of keplers laws

What is the ability to understand planetary motion and the ability to track objects in space as well as to know when the best time to view objects or to launch a space craft. 

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