2.3 Vocabulary #1

Front

Disappearance

Back

When something or someone can no longer be seen or found.

Front

Observation

Back

To notice or carefully look at something.

Front

Transformed

Back

To change from one thing to another.

Front

Energetic

Back

Active and full of life.

Front

Behavior

Back

The ways that animals or human beings act.

Front

Migrate

Back

To move from one place to another, often for seasonal changes.

Front

Flurry

Back

A sudden burst of activity or movement.

Front

Theory

Back

An explanation based on evidence that can be tested.

Front

Active

Back

Engaged in action; not passive.

Front

Full of life

Back

Having a lot of energy and enthusiasm.