Planetary Motion

What is Nutation?

• Slight change in the degree of Earth's tilt

• Movement of where Earth's axis is pointing in space

• The center of mass where two objects orbit each other

• The formation of a new planet

Tags

NGSS.MS-PS2-4

What is Precession?

• Slight change in the degree of Earth's tilt

• Movement of where Earth's axis is pointing in space

• The center of mass where two objects orbit each other

• How planets move around the Sun

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

What is the Barycenter?

• Slight change in the degree of Earth's tilt

• Movement of where Earth's axis is pointing in space

• The center of mass where two objects orbit each other

• The very center of the universe

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

What does Nutation cause?

• Slight changes in where Earth's axis is pointing

• Which stars are above the North pole

• Which stars are above the South pole

• Slow changes in the timing of the seasons

How long does it take Earth to revolve around the Sun?

• 24 hours

• 365.25 days

• 29.5 days

• Trick question, Earth ROTATES around the Sun

Tags

NGSS.MS-ESS1-1

NGSS.MS-ESS1-2

How long does it take Earth to rotate around its axis?

• 24 hours

• 365.25 days

• 29.5 days

• Trick question, Earth REVOLVES around its axis

What is the shape of Earth?

• A perfect sphere

• A slightly squished (oblate) sphere

• A circle

• An ellipse