S1 Earth Forces

Front

What is the outermost layer of the Earth called?

Back

Crust

Front

Which layer of the Earth is made up of molten rock and is located beneath the crust?

Back

Mantle

Front

What is the name of the supercontinent that existed about 300 million years ago?

Back

Pangaea

Front

Who proposed the theory of continental drift?

Back

Alfred Wegener

Front

What is the main cause of tectonic plate movement?

Back

Convection currents in the mantle

Front

Which type of plate boundary is associated with the creation of new oceanic crust and islands?

Back

Constructive boundary

Front

At which type of plate boundary do earthquakes most commonly occur?

Back

At most types of plate boundaries

Front

What is the point inside the Earth where an earthquake originates called?

Back

Focus

Front

What is the name for the point on the Earth's surface directly above the earthquake's focus?

Back

Epicentre

Front

Which instrument is used to measure the strength of earthquakes?

Back

Seismograph