Water Composition, States, and Percentage
Ocean Size and Location
Tides, Waves, and Ocean Currents
Water Salinity and Characteristics of Rivers
Rivers of the World and Spain
100

What is the water formula?

H2O

100

Which is the biggest ocean?

The Pacific ocean

100

Usually, waves are the consequence of....

Wind

100

What is the name for the area drained by a river?

River basin

100

Which river crosses through Toledo?

Tajo

200

What two elements form water?

Hydrogen and oxygen

200

Which is the smaller ocean?

The Arctic ocean

200

Which movement does water take to create waves?

Rising and falling
200

What is the name for the space that a river occupies?

Rivered channel

200

Which river crosses through Seville?

Guadalquivir

300

Which are the three states where we can find water on the Earth?

Solid, liquid, gas

300

Which ocean is between America, Africa and Europe?

The Atlantic ocean

300

Where are waves the most dangerous?

Closer to the coast
300

Which sea has more salt? The Mediterranean or the Baltic?

Mediterranean

300

Which is the biggest river in the world?

Amazon river

400

Where can we find most of the freshwater on the Earth?

Glaciers and polar caps

400

Which ocean meets the Madagascar coasts?

The Indian ocean

400

What is the reason for the tides?

Gravity of the Moon

400

Which is the reason the for different levels of salinity of the oceans?

Heat and Evaporation

400

Which is the largest river in Africa?

Nile river

500

What is the percentage of a surface of the Earth covered by water?

75%

500

Which ocean meets the Chinese coasts?

The Pacific ocean

500

Which current affects the Iberian peninsula?

Gulf current

500

Which are the two oceans with less salinity?

Arctic and Antarctic oceans 

500

Which is the biggest river in North America?

Mississippi