Unit 1: Topic 1a Hazardous Earth—Climate Change

The world's climate system functions through the interaction of which of the following components?

• Atmosphere, hydrosphere, cryosphere, lithosphere, and biosphere

• Only the atmosphere and hydrosphere

• Atmosphere, hydrosphere, and lithosphere only

• Biosphere and cryosphere only

Global / Atmospheric Circulation is:

• the large-scale movement of air that distributes heat across the surface of the Earth.

• the process of water evaporating and condensing in the atmosphere.

• the cycle of carbon dioxide and oxygen in the atmosphere.

• the pattern of ocean currents that affect climate.

What are the natural causes of climate change?

• Volcanic eruptions, solar radiation, and ocean currents

• Deforestation and burning fossil fuels

• Industrial emissions and urbanization

• Use of aerosols and refrigerants

The Greenhouse Effect is:

• a natural process that warms the Earth's surface.

• a phenomenon that cools the Earth's surface.

• an effect that has no impact on Earth's temperature.

• a process that only occurs on other planets.

What is the 'Enhanced' Greenhouse Effect?

• A natural process that warms the Earth's surface

• An increase in Earth's average surface temperature due to rising levels of greenhouse gases

• A decrease in Earth's temperature due to volcanic eruptions

• The effect of deforestation on local climates

How are human activities causing climate change?

• By increasing greenhouse gas emissions

• By reducing greenhouse gas emissions

• By stabilizing greenhouse gas emissions

• By having no effect on greenhouse gas emissions

The possible consequences of climate change include:

• Rising sea levels

• Increased frequency of extreme weather events

• Loss of biodiversity

• All of the above

The earth receives most radiation on the equator where it is hottest compared to the ________.

The earth's orbit changes from being circular to ________ (more egg shaped) and this changes the amount of solar energy the earth surface receives.

• elliptical

• circular

• triangular

• rectangular

What evidence is there of natural climate change?

• Ice core samples showing historical CO2 levels

• Tree ring data indicating past climate conditions

• Fossil records showing changes in species distribution

• All of the above