Planetary Motion

Front

What shape is Earth's orbit?

Back

ellipse

Front

What is Kepler's 1st law?

Back

The planets orbit in an ellipse

Tags

NGSS.HS-ESS1-4

Front

What is Kepler's 2nd law?

Back

The planets move faster when they are closer to the sun and slower when they are further from the sun

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

Front

What is Kepler's 3rd law?

Back

The farther a planet is from the sun the slower the orbit (P² = a³)

Tags

NGSS.HS-ESS1-4

Front

The center of mass between two objects. This is what the planets truly orbit.

Back

barycenter

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

Front

Earth's wobble caused by the gravitational pull from the Sun & Moon. This changes the direction of the Earth's axis and will cause the north star to change over time.

Back

precession

Front

Earth's wobble caused by the gravitational pull from the Moon only. This changes the degree of the Earth's tilt and will cause seasonal changes.

Back

nutation

Tags

NGSS.MS-ESS1-1

Front

Due to the solar system's changing barycenter, is the Sun stationary?

Back

No, the Sun is not stationary.

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

Front

During the origin of our solar system, the planets began to orbit the Sun because it was the least dense object. True or False?

Back

False

Tags

NGSS.MS-ESS1-2

Front

The point in the earth's orbit where it is closest to the sun and moves the fastest.

Back

perihelion/perigee