Name *

First Name

Last Name

This term describes the duration in which a molecule stays in the atmosphere: *

Atmospheric lifetime

Half-life

Global warming potential

Greenhouse gas emission

Which of the following definitions best describes a carbon sink? *

A natural reservoir that accumulates and stores chemical compounds for an indefinite period

An artificial reservoir that accumulates and stores some carbon-containing chemical compound for a short period of time

A natural or artificial reservoir that accumulates and stores some carbon-containing chemical compound for an indefinite period

None of these answers is accurat

Over the past century, which greenhouse gas has been emitted most by human activity? *

Carbon Dioxide

Methane

Nitrous Oxide

Flourinated gases

Which of the following statements about global warming potential (GWP) is true: *

The smaller the GWP, the less that a given gas warms the Earth compared to CO2 over that same period of time

GWP is the measure of how much energy the emissions of 1 ton of a gas will absorb over a given period of time, relative to the emissions of 1 ton of carbon dioxide (CO2)

The GHGs with the largest GWP are methane (CH4) and PFCs

GWP provides a common unit of measure, which allows analysts to add up emissions estimates of different gases and allows you to compare emissions reduction opportunities across gases

HFCs are emitted primarily from which of the following activities. *

Refrigeration

Fuel combustion

Decomposition of plant and animal waste

Coal mines