Exploring Precession and Orbital Changes

The video discusses Earth's precession and orbit inclination, explaining that these phenomena are due to Earth's shape and gravitational interactions with the sun and moon. Earth's equatorial bulge causes it to be fatter than tall, affecting its orbit. Long-term cycles like axial precession result from these interactions. Additionally, Earth's orbit changes over time due to interactions with other planets. These changes occur over thousands of years.

What are the two main changes in Earth's orbit discussed in the video?

• Eccentricity and tilt

• Precession and inclination changes

• Rotation and revolution

• Axial tilt and orbital speed

Why is Earth not a perfect sphere?

• It is fatter at the equator than at the poles

• It rotates too slowly

• It has mountains and valleys

• It is affected by the moon's gravity

How much longer is Earth's diameter along the equator compared to pole to pole?

• 27 miles

• 43 kilometers

• 43 miles

• 27 kilometers

What causes the long-term cycles like axial precession?

• The distance between Earth and the sun

• Earth's perfect spherical shape

• Interactions between Earth's asymmetry and gravitational pull of the sun and moon

• Earth's rotation speed

What is the term used to describe the wobble in Earth's axis?

• Orbital tilt

• Axial precession

• Equatorial bulge

• Gravitational pull

What other changes in Earth's orbit are mentioned besides axial precession?

• Changes in Earth's tilt

• Changes in Earth's distance from the sun

• Changes in Earth's rotation speed

• Changes in the actual ellipse of Earth's orbit

What causes the changes in the ellipse of Earth's orbit?

• Interactions with Earth's moon

• Earth's distance from the sun

• Earth's rotation speed

• Interactions with other planets in the solar system

Tags

NGSS.HS-ESS1-4

Over what time period do these orbital changes occur?

• Decades

• Millions of years

• Thousands of years

• Hundreds of years

Tags

NGSS.HS-ESS1-4

What is the primary reason for the changes in Earth's orbit?

• Earth's distance from the sun

• Earth's rotation speed

• Earth's asymmetry and gravitational interactions

• Earth's perfect spherical shape

What interactions cause changes in Earth's orbit as a whole?

• Interactions with Earth's atmosphere

• Interactions with other objects in the solar system

• Interactions with Earth's moon

• Interactions with the sun's gravity

Tags

NGSS.HS-ESS1-4