Atmosphere and Air resources

What gas makes up 78% of the atmosphere?

Nitrogen

What gas makes up 21% of the atmosphere?

Oxygen

Which atmospheric gas is responsible for clouds and rain?

Water Vapor

Where is the Ozone layer found?

In the Stratosphere

What is the function of the Ozone layer?

It blocks harmful Ultraviolet (UV) radiation

Which atmospheric layer is the lowest and contains all weather?

Troposphere

Which atmospheric layer is where meteors burn up?

Mesosphere

What is Radiation?

Energy transfer through electromagnetic waves (e.g. Sun to Earth)

What is Conduction?

Energy transfer through direct contact/molecular collision

What is Convection?

Energy transfer by movement of heated material (warm rises / cool sinks)

What is the Greenhouse Effect?

A natural process where gases trap heat to keep Earth warm

What caused the increase in CO2 over the last 150 years?

Burning of fossil fuels

What organism originally introduced oxygen to the atmosphere?

Cyanobacteria (via photosynthesis)

What gas do plants take in during photosynthesis?

Carbon Dioxide (CO2)

What gas do organisms release during respiration?

Carbon Dioxide (CO2)