Earth's Systems 1

A system of all life on Earth: in the air, water and on land, is called the _________.

The _________ is made up of the continents as well as the smaller land masses (islands).

Earth can be thought of as consisting of four major spheres:

This is an example of what system?

This is an example of which system?

This system is an example of:

__________ is the water portion of Earth: oceans and freshwater.

This system is called:

The ability to do work or cause change.

Earth gets it's energy from the:

A group of parts that work together as a whole.

A cover of gases that surrounds Earth is called: