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What is the biosphere?
is the region at the surface of the Earth where all life exists. It consists of all the ecosystems on Earth
What is the hydropshere?
all the water on earth. Including oceans, rivers, lakes, groundwater, polar ice caps, glaciers, water vapour, rain and snow.
What is the lithosphere?
The Earth’s solid crust and the cool part of the mantle immediately below the crust Includes all the rocks, sand, minerals and soil on Earth
What is the Atmosphere?
Consists of all the gases that surround the Earth.
What is weather?
describes the state of the atmosphere in terms of temperature, wind, cloud cover and rain at any given time
What is climate?
Climate is the long-term averages of weather conditions
What influences climate?
Sum, Earth's surface, gases in the atmosphere.
What is the greenhouse effect?
Sun's radiation enters the atmosphere, is absorbed by the land and ocean, it radiates back into the atmosphere where gases trap some heat to keep the earth warm
Explain the enhanced greenhouse effect?
When there are increased greenhouse gases, this traps more heat and causes the temperature to rise.
What are surface currents caused by?
Wind
What are deep currents caused by?
salinity and temperature
What is thermohaline circulation?
Water cycles from deep to surface currents and then back to deep again
What happens to dense water?
It sinks
Which is denser: cold or warm water?
Cold
Which is denser: Salty or fresh water?
Salty
What is global warming?
Global warming refers to an increase in the average surface temperatures of the Earth
