WHY IS WATER IMPORTANT ON EARTH Because all

WHY IS WATER IMPORTANT ON EARTH?

Because all living things, plants, animals and human beings, need water to survive.

WHY, WHEN WATER IS A RENEWABLE RESOURCE, IS IT ALSO A SCARCE RESOURCE?

• Because it does not run out, but there is a limited amount. Most of the water on Earth recycles naturally, but the quantity always stays the same.

The majority of Earth’s water is FRESH WATER/SALT WATER and is found in OCEANS/LAKES. Only 3 out of every 100 liters of water on the planet is FRESH WATER/SALT WATER. The majority of fresh water is found as WATER VAPOUR/ICE in the poles; fresh water found below the surface of the Earth is called UNDERGROUND WATER/SURFACE WATER; fresh water that is found on the surface of the Earth is located in RIVERS AND LAKES/OCEANS AND SEAS; fresh water is also found in ROCKS/CLOUDS.

Complete the sentences about the water cycle and number them in order. • Water vapour rises into the atmosphere, condenses and forms ______. • The Sun heats the surface of the Earth, causing water to ________. • Water falls to the earth and fills the ____, _____ and ______. • Drops of water fall from the clouds to the earth and produce ______, _________ or _________.

• 2 Water vapour rises into the atmosphere, condenses and forms clouds. • 1 The Sun heats the surface of the Earth, causing water to water vapor. • 3 Rain falls to the earth and fills the seas, rivers and lakes. • 4 Drops of water fall from the clouds to the earth and produce rain, snow or hail.

• The longest river in Spain: • The longest river on the Peninsula:

• The longest river in Spain: Ebro • The longest river on the Peninsula: Tajo

Name the Peninsula’s watersheds and three of each watershed´s rivers. • ____________Watershed Rivers: • ______Watershed Rivers:

• Cantabrian Watershed Rivers: Nalón, Nervión y Bidasoa • Mediterranean Watershed Rivers: Ebro, Turia, Júcar y Segura • Atlantic Watershed Rivers: Miño, Duero, Tajo Guadiana, Guadalquivir

• Which watershed, in general, has the longest rivers?

• The Atlantic watershed

• Which watershed has short rivers but a large annual flow volume?

• The Cantabrian watershed