Water cycle

What are the three main processes in the water cycle?

• Evaporation

• condensation

• precipitation

What’s evaporation?

heat from the sun causes water at earth’s surface to evaporate

What’s condensation?

as warm air rises, it cools and condenses, forming clouds

What’s precipitation?

water fall back to earth’s surface when it rains or snows

What’s transpiration?

process by which water is absorbed by the roots of plants, carried through plant, and lost as water vapour though small pores in the leaves

How much of earth’s water is salty?

97%

How are surface currents created?

wind

What do ocean’s currents redistribute?

thermal energy nutrients around earth

What do warm currents do?

move heat (warm water from the equator) towards the poles (higher, colder latitudes)

What’s The Great Ocean Convey Belt?

A massive system of deep-water currents that moves deep water, thermal energy, and nutrients around earth

What does the great conveyor belt move?

Nutrients such as nitrogen and phosphorus around the ocean

What’s water pollution?

any physical, biological, or chemical change in water quality that has an adverse effect on organisms or that makes water unsuitable for desired use

What kind of sources of pollutions are ther?

Point and non-point

What’s bioaccumulation?

It’s the gradual build-up of these chemicals/pollutants in cells and tissues of organisms

What’s accumulation?

Chemical taken up and stored faster than it is broken down and excreted via food intake, skin contact, or respiration

Whaat’s biomagnification?

The increase in concentration of pollutants in tissues or organisms that are successively higher levels in a food chain or food web