What happens to dense water?
It sinks
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 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
What is global warming?
Global warming refers to an increase in the average surface temperatures of the Earth
What is climate?
Climate is the long-term averages of weather conditions
Which is denser: cold or warm water?
Cold
Explain the Nitrogen cycle
Explain the enhanced greenhouse effect?
When there are increased greenhouse gases, this traps more heat and causes the temperature to rise.
What is weather?
describes the state of the atmosphere in terms of temperature, wind, cloud cover and rain at any given time
True or False: a healthy reef can recover from coral bleaching
True: If it is not prolonged exposure the reef can recover.
What is climate change?
Climate change refers to the change in long term weather patterns that may result in increased or decreased rainfall and temperature
What is thermohaline circulation?
Water cycles from deep to surface currents and then back to deep again
Enhanced greenhouse effect is cause by what?
Burning of fossil fuels, deforestation and agriculture
What is the Atmosphere?
Consists of all the gases that surround the Earth.
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 are deep currents caused by?
salinity and temperature
Explain the Carbon cycle
What influences climate?
Sum, Earth's surface, gases in the atmosphere.
Which is denser: Salty or fresh water?
Salty
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 are surface currents caused by?
Wind
Explain coral bleaching?
When the water temperature in the reefs is too warm or too polluted, the coral begin to bleach- losing their algae (food source) and die
Explain the water cycle
What are rising sea levels caused by?
Increased temperature, which melts ice caps