A collection of parts that work together

System that contains all of the living things on Earth.

All of the air that surrounds Earth

All of the solid parts of Earth including soil

All of the frozen and liquid water on and below Earth's surface

The top layer of the Earth that is made of soil and rock

Layer of Earth that contains moving rock

Layer of Earth that contains liquid iron and nickel

Center of Earth, made of a solid ball of iron and nickel

A continuous cycle of rock changing from one form to another through natural processes

Layer of the atmosphere found closest to the surface of the Earth. This layer contains weather and airplanes fly here.

Layer of the atmosphere that contains the ozone layer

Meteors burn up here

Aurora Borealis is found here.

Layer of the Earth that borders outer space. Satellites are found here.

Which layer of the atmosphere has the lowest air pressure?

Which layer of the atmosphere has the highest air pressure?

Lakes, rivers, streams and ponds are all example of what type of water?

Water that is found underground and stored in aquifers

Oceans are an example of

Where do we find most of the water found on Earth?

People, plants, animals, insects, bacteria all belong to which system?

The continuous cycle of water moving from the surface of the earth to the atmosphere and back to earth.

The process of liquid changing to a gas

What is water vapor?

The process of a gas turning back into a liquid.

water in the form of rain, snow sleet or hail falling to the surface of the earth.

An example of air pollution is

Which systems are involved in the water cycle?

Weathering and erosion cause changes to which system?

The process of carbon being released into the atmosphere by organisms

Do all four systems found on Earth need to work together?