What are the 4 spheres (Earth systems)?

Which Earth system contains the air we breathe?

Which earth system contains rocks, soil, and other earth materials?

What is the earth system that contains all water on earth?

What is the earth system that contains all living things?

Plants are rooted into the ground. What two systems are interacting?

Plants soak up water to survive. What two systems are interacting?

Rain falls to the ground and soaks into the dirt. What two systems are interacting?

Birds eat worms. What system is interacting with itself?

There is water in the air. What two systems are interacting?

What is the outermost layer of the Earth?

What is the crunchy layer?

Which Earth layer is made up mostly of iron?

Which layer is at the center of the Earth?

What type of crust is under the ocean?

What type of crust makes up the continents?

True or false: The asthenosphere is soft and can bend like plastic.

Which Earth layer contains a lot of aluminum and silicon?

True or false: the lithosphere floats on top of the asthenosphere.

Which Earth layer is the densest?

Which two metals make up the inner core?

True or false: The crust is a solid shell.

True or false: we could live in the mantle.

Denser materials tend to float or sink?