Climate and Climate Change

The sun's rays are least direct

• near the poles
• near the equator
• at high altitude
• far from the ocean

The _________________ climate has cool summers, bitterly cold winters and permafrost.

• desert
• tropical
• marine continental
• tundra

The most recent major ice age in North America extended as far south as _______________________ and ___________________.

• Minnesota and Wisconsin
• Nebraska and Iowa
• New Mexico and Oklahoma
• Texas and Florida

As many as four ice ages have occurred on Earth during the past ______________ years.

• 10,000
• 200,00
• 2 million
• 4 million

Summers are caused by _________________________________.

• a combo of longer days and more direct rays from the sun
• less direct rays from the sun
• longer days and shorter nights
• more direct rays and shorter days

The two main factors that determine the climate of a region are _____________ and ______________.

• altitude and pressure
• pressure and temperature
• temperature and precipitation
• altitude and pressure

Climates are classified according to two major factors:  ______________ and __________________.

• elevation and precipitation
• latitude and temperature
• elevation and latitude
• precipitation and temperature

Earth's ozone layer is _____________________________.

• has been thickening over the past several years
• filters harmful ultraviolet radiation from the sun
• exists only over Antarctica
• traps carbon dioxide in the stratosphere

Because Earth's axis is _________________, the hemispheres receive different amounts of solar energy at different times.

• straight
• titled
• bent
• not there

Increased carbon dioxide may cause global warming by trapping more ____________ in the atmosphere.

• water
• gases
• heat
• water vapor