Science Lesson 9

Front

What is a chemical?

Back

An element or a compound formed from elements.

Front

What does it mean to classify things?

Back

To sort them by category.

Front

What is a core?

Back

The innermost part of something.

Front

What is ecology?

Back

The science of relationships between living things and their environment.

Front

What is an effect?

Back

A result.

Front

What does erode mean?

Back

To wear away.

Front

What happens when things expand?

Back

They get larger.

Front

What is an origin?

Back

How something came into being.

Front

What does physical mean?

Back

Related to the body.

Front

What is a root?

Back

The part of a plant that usually grows underground.