Precession and Nutation

This image is an example of which of the following?

• Kepler's 1st Law

• Kepler's 2nd Law

• Kepler's 3rd Law

• Kepler's 4th Law

What is the wobbling of Earth on its axis called?

• precession

• Nutation

• Rotation

• Revolution

What is the circular offset of Earth’s position due to its rotation on its axis?

• Precession

• Nutation

• Barycenter

• Rotation

Slow, circular movement at the top of Earth's axis

• precession
• barycenter
• revolution

A wobble back and forth

• Rotation
• Nutation
• Revolution

Earth's orbit follows an elliptical path.

• Kepler's 1st law
• Kepler's 2nd law
• Kepler's 3rd law
• Nutation

When Earth orbits around the sun, it slows down when it is close to the sun. It speeds up its orbit when it is further from the sun. This is because the sun's gravity is stronger when you are closer to it.

• Kepler's 1st law
• Kepler's 2nd law
• Kepler's 3rd law
• Nutation

Planets further from the sun have an orbit that lasts MUCH longer than planets that are close to the sun.
Pluto's orbit lasts over over 90,000 days.
Mercury's orbit lasts 88 days.

• Kepler's 1st law
• Kepler's 2nd law
• Kepler's 3rd law
• Nutation

The Earth's axis changes direction (but the angle does NOT change).

• Nutation
• Precession
• Barycenter
• Revolution

During precession, the Earth wobbles a little. This DOES change the angle of the axis.

• Nutation
• Precession
• Barycenter
• Revolution