The regions of the surface and atmosphere of the Earth (or other planet) where living organisms exist.
What is the biosphere.
200
The form of energy that sunlight is changed into.
What is radiation?
200
Riding your bike to work, walking or taking public transportation.
What is a way to reduce your carbon footprint.
300
A solution with a pH less than 5.6
What is acid precipitation.
300
All of the water on the earth.
What is the hydrosphere.
300
Coming from the latin word for “Whiteness”.
What is Albedo?
300
An hour in which most of the world turns off their lights.
What is Earth Hour.
400
Chemists measure the acidity of a solution using a certain type of scale.
What is the pH scale.
400
The 'conveyor belt' of the oceans.
What is Thermohaline Circulation.
400
Low levels absorb light whereas high levels reflect radiation.
What is the albedo effect?
400
They use 1/4 of the electricity and lasts much longer. They alone prevent more than 1 trillion pounds of greenhouse gas emissions.
What are energy efficient light bulbs.
500
A chemical reaction in which an acid and a base react to form an ionic compound and water.
What is a neutralization reaction.
500
The Arctic waters are expanding, ruining habitats.
What is the melting of the ice caps.
500
Radiation from the sun is absorbed by objects that have a low albedo, this causes the earths temperature to rise. Radiation from the sun reflects off objects with a high albedo but may be trapped by clouds and smog in the atmosphere, once again causing the earths temperature to rise.
What is global warming?
500
Hydro, Nuclear, Clean Coal, Solar and/or Wind power.