Science Competition Grade 3

Climate ia described with................................................................

• precipitation only

• average temperature only

• average temperature and precipitation

.........................................is characterized by extremely cold temperatures and low precipitation.

• Polar zone

• Temperate zone

• Tropical zone

...................................has warm to hot temperatures with high amount of rainfall.

• Polar zone

• Temperate zone

• Tropical zone

...........................................has mild temperatures ,usually warm summers and cold winters.

• Polar zone

• Temperate zone

• Tropical zone

Areas close to the equator have.........................................................

• cold temperatures

• hot temperatures

Burning fuels will produce mainly..........................................................

• oxygen gas

• hydrogen gas

• carbon dioxide gas

When the volcanoes erupt ,they release ash and other particles blocking the sunlight causing the Earth to be............................................

• warmer

• cooler

Carbon dioxide ,methane and nitrous oxide are called.....................................................

• natural gases

• breathing gases

• greenhouse gases

............................................is a natural process essential for maintaining the Earth's temperatures suitable for life.

• Burning fuel

• Greenhouse effect

• Deforestation

The climate of a certain area is described over a short period of time. ( )

• True

• False