Earth's Formation (test study guide)

Front

What is the process of Earth's formation from a nebula?

Back

The process involves the collapse of a nebula, leading to the formation of the sun and planets through accretion.

Front

What is density?

Back

Density is the mass of an object divided by its volume, determining whether it will float or sink in a fluid.

Front

What happens to objects with low density in water?

Back

Objects with low density tend to float because they are lighter than the water.

Front

What is gravity?

Back

Gravity is the force of attraction that occurs between masses, keeping planets in orbit around the sun.

Front

What is the outer core of the Earth?

Back

The outer core is the layer of the Earth that is molten (liquid metal) and lies beneath the mantle.

Front

What does it mean for a planet to revolve?

Back

To revolve means to orbit around another body, such as a planet orbiting the sun.

Front

What is the main component of the solar system that formed from a nebula?

Back

The sun is the main component that formed from the material in the nebula.

Front

What is the difference between rotation and revolution?

Back

Rotation is the spinning of an object around its own axis, while revolution is the movement of an object around another object.

Front

What are planetesimals?

Back

Planetesimals are small celestial bodies that formed from dust and gas in the early solar system and eventually coalesced to form planets.

Front

What is the lithosphere?

Back

The lithosphere is the rigid outer layer of the Earth, consisting of the crust and the upper mantle.