Bill Nye Volcanoes

Front

What happens to plant life after a volcanic eruption?

Back

Plant life can grow again after a volcanic eruption because the soil can become rich in nutrients from the ash.

Front

How were the Hawaiian Islands formed?

Back

The Hawaiian Islands were formed by volcanoes that are not located at a plate boundary, but rather over a hotspot in the Earth's mantle.

Front

In which direction do lava flows move?

Back

Lava flows move downhill due to gravity.

Front

What does it mean when a volcano is considered extinct?

Back

A volcano is considered extinct if it hasn't erupted for thousands of years, but this is not a strict time limit.

Front

What are the two types of volcanic activity?

Back

Some volcanoes ooze hot lava, while others explode.

Front

What is a volcano?

Back

A volcano is an opening in the Earth's surface where molten rock, ash, and gases can escape.

Front

What is the difference between active, dormant, and extinct volcanoes?

Back

Active volcanoes are currently erupting or show signs of erupting, dormant volcanoes have not erupted in a long time but could erupt again, and extinct volcanoes are not expected to erupt again.

Front

What is lava?

Back

Lava is molten rock that erupts from a volcano.

Front

What is volcanic ash?

Back

Volcanic ash is tiny fragments of rock and glass that are ejected during a volcanic eruption.

Front

What is a volcanic eruption?

Back

A volcanic eruption is the release of gas, ash, and molten rock from a volcano.