Science 5.3 Flashcards
(15 cards)
What is the hydrosphere?
Encompasses all the water on earth
What state can water be in to be included in the hydrosphere?
Any (liquid, solid or gaseous)
What percentage of earth’s water is salt water?
97.2%
What is freshwater?
Water with a very low amount of salt
Where can you find freshwater?
Glaciers and ice flows
Groundwater
Surface water
Water vapour
Where can you find the largest amount of freshwater?
Glaciers and ice flows
What type of water do humans drink?
Freshwater
Where do the oceans get their energy?
The sun
What happens when the sun heats the water in the oceans?
Water evaporates
How much water evaporates from oceans?
16 billion litres per second
What happens once the water that evaporated from the oceans reaches the air?
It condenses and releases energy which warms up the air
Almost all meteorological events on earth are caused by what?
The cycle of evaporation and condensation from the oceans
Where do hurricanes gain their power?
Over the oceans
How is the heated air transported from over the oceans to the continents?
Wind
What protects living organisms from the sun’s ultraviolet rays?
Water in the atmosphere
