The Earth's relief and the hydrosphere

When an earthquake happens under the sea, it can cause a tsunami.

The crust surrounds the core. It is 1% of the Earth's volume.

The outer part of the crust is the lithosphere.

The Mariana trench is and example of Abyssal plain.

A large underwater mountain range.

Part of the land that projects out into the sea.

How many watersheds are there in Spain?

The inner core and the outer core represent ___ of the Earth's volume.

Lack of vegetation can prevent soil erosion on mountainsides.

They can extend for many kilometres out to sea with depths up to 400 metres.

River flow is the average of the amount of water carried by a river through each month of the year

Volcanic eruptions expel gases, ash, rocks and magma.

A large piece of land surrounded by water on three sides and connected to land by an isthmus.

Similar to a bay, but bigger.

These are large marine mountain ranges found along the lines of contact between 2 large plates.

A large open area of flat or slightly undulating land.

A flat area of land at an altitude above the sea level.

It is the amount of water that a river carries at a specific moment.

Thin channel of water that goes inland from the sea.

Volcanic eruptions and earthquakes are caused by external forces.

It can be U-shape or V-shape.

A flat area of the ocean floor, found at depths between 3000 and 7000 metres.

A mountain range is mainly made up of ...

The Earth's crust is thinner where it forms the continents and thicker where it is covered by the oceans.

The continents used to be one single landmass called Pangea ____ million years ago.

An area of land lower than the surrounding area.

Island: a piece of land almost completely surrounded by water. A group of islands close together from an archipelago.

When a river slows down, it leaves materials, forming...

Continental slope: a steep underwater drop that links the continental shelf with the ocean floor.

Watershed is an area of high ground from which water flows down to a river.