Chapter 19 Vocab Flashcards Preview

Geology > Chapter 19 Vocab > Flashcards

Flashcards in Chapter 19 Vocab Deck (20):
1

Acid Rain

Precipitation in which air pollutants react with water to make a weak acid that then falls from the sky.

2

Albedo

The reflectivity of a surface.

3

Biogeochemical Cycle

The exchange of chemicals between living and nonliving reservoirs in the Earth System.

4

Carbon Sequestration

The process of extracting carbon dioxide from sources (e.g., power plants) and sending it back underground to keep it out of the atmosphere and diminish the greenhouse effect.

5

Climate

The average weather conditions, along with the range of conditions, of a region over a year.

6

Ecosystem

An environment and its inhabitants.

7

Feedback Mechanism

A condition that arises when the consequence of a phenomenon influences the phenomenon itself.

8

General Circulation Model

A numerical calculation that simulates the flow of the atmosphere and resulting phenomena, due to changes in atmospheric temperature and other parameters.

9

Global Change

The transformations or modifications of both physical and biological components of the Earth System through time.

10

Global Climate Change

Transformations or modifications in Earth's climate over time.

11

Global Cooling

A fall in the average atmospheric temperature.

12

Global Warming

A rise in the average atmospheric temperature.

13

Greenhouse Effect

The trapping of heat in the Earth's atmosphere by carbon dioxide and other greenhouse gases, which absorb infrared radiation; somewhat analogous to the effect of glass in a greenhouse.

14

Greenhouse Gas

Atmospheric gases, such as carbon dioxide and methane, that regulate the Earth's atmospheric temperature by absorbing infrared radiation.

15

Greenhouse (hothouse) period

Relatively warm global climate leading to the rising of sea level for an interval of geologic time.

16

Icehouse Period

A period of time when the Earth's temperature was cooler than it is today and ice ages could occur.

17

Mass - Extinction

A time when vast numbers of species abruptly vanish.

18

Ozon Hole

An area of the atmosphere, over polar regions, from which ozone has been depleted.

19

Paleoclimate

The past climate of the Earth.

20

Supercontinent Cycle

The process of change during which supercontinents develop and later break apart, forming pieces that may merge once again in geologic time to make yet another supercontinent.