When an area on Earth experiences winter, that part of the Earth is _________.
|A)||tilted toward the sun|
|B)||tilted away from the sun|
|C)||close to the sun|
|D)||farther away from the sun|
Which of the following countries is located in a temperate zone?
|C)||The United States|
What is the name of the gas in car exhaust that helps heat up our atmosphere?
Seasons are caused by __________.
|A)||Earth's tilted axis|
|C)||the distance between Earth and the sun|
|D)||the changing weather|
The Northern Hemisphere experiences __________ when it's tilted __________ the sun.
|B)||summer, away from|
|C)||spring, away from|
One effect of El Niño on the southern United States' climate is __________.
Ice ages seem to last __________.
|A)||10,000 to 15,000 years|
|B)||60,000 to 100,000 years|
|C)||1,000 to 5,000 years|
|D)||200,000 to 500,000 years|
Ice ages alternate with __________.
A cause of climatic change that happens over a long period of time is __________.
|C)||movement of Earth's crustal plates|
__________ are dark areas on the surface of the sun.
When the tilt of Earth increases, the change between winter and summer is __________.
Greenhouse gases are __________.
|A)||always bad for the environment|
|B)||in perfect amount on Earth|
|C)||necessary to keep Earth warm|
|D)||beneficial in large amounts|
A direct result of global warming, as opposed to an indirect result, is __________.
|B)||increased global temperatures|