8. 3- What are oceans and seas?
They hold almost all the world’s liquid water,
that is salt water.
Salinity is different depending on if the sea is
warmer or colder.
Warm = + salt
Cold = - salt
9.
10. The importance of oceans and seas
-Food
-Raw materials
-Energy
-Tourism
-Transport
11. 4- What are currents, tides and waves?
Map of ocean currents
16. 5- What are lakes?
Different terms:
-Lake
-Lagoon (small)
-Inland sea (salt water)
Different origins:
-Precipitation
-Rivers or groundwater
-Glaciers
25. 7- What problems are related to water today?
WATER CONSUMPTION AND DISTRIBUTION
-3% Fresh water -> 0,014% available
-Increase in population -> increase in
consumption
-Bad distribution
-Consequences: droughts or floods