Earthquakes and Volcanoes and Continental Drift--7th grade

Front

What is a Shield Volcano?

Back

A volcano with gradual slopes formed by slow cooling lava.

Front

What is evidence of continental drift?

Back

Coastlines, fossils, climate & land formations.

Front

What is a break in the rock layers called?

Back

Fault.

Front

What is the correct sequence of wave arrivals during an earthquake?

Back

P waves → S waves → Surface waves.

Front

What is the difference between magma and lava?

Back

Lava is just magma, but it's on the surface of the Earth.

Front

What are P waves?

Back

Primary waves that are the first to arrive during an earthquake, traveling through solids and liquids.

Front

What are S waves?

Back

Secondary waves that arrive after P waves, traveling only through solids.

Front

What are Surface waves?

Back

Waves that travel along the Earth's surface, causing the most damage during an earthquake.

Front

What is continental drift?

Back

The theory that continents move over geological time, leading to their current positions.

Front

What is a volcano?

Back

An opening in the Earth's crust where molten rock, ash, and gases escape.