Earth Cycles & Life Over Time Review

Front

What is a mineral?

Back

A mineral is a naturally occurring, inorganic solid with a definite chemical composition and a crystalline structure.

Front

Why are cement, brick, steel, and glass not classified as minerals?

Back

They are not naturally occurring.

Front

What does 'naturally occurring' mean?

Back

It means that the substance must occur in nature and cannot be created by humans.

Front

What is the order of relative ages of the following features from oldest to youngest: Limestone, Basalt, Fault, Siltstone?

Back

Limestone, Siltstone, Fault, Basalt.

Front

What is camouflage?

Back

Coloring or another physical characteristic that helps an organism blend in with its environment.

Front

What is mimicry?

Back

Mimicry is when one organism resembles another organism or object to gain an advantage.

Front

What is hibernation?

Back

Hibernation is a state of inactivity and metabolic depression in animals during winter.

Front

What is migration?

Back

Migration is the seasonal movement of animals from one region to another.

Front

What is a common ancestor?

Back

A common ancestor is an ancestral species from which different species have evolved.

Front

What is the significance of similar arm bones in humans, birds, whales, and lizards?

Back

It indicates that these species have a common ancestor.