Volcanoes and Climate Quiz

What type of volcano is characterized by a stream-driven eruption as the hot rocks meet water?

• Phreatic

• Phreatomagmatic

• Strombolian

• Vulcanian

Answer explanation

A phreatic eruption occurs when hot rocks interact with water, causing steam explosions. This type of eruption is characterized by the explosive release of steam and gas, making 'phreatic' the correct choice.

What type of volcano is characterized by tall eruptions that reach 20 km high with pyroclastic flow and ashfall tephra?

• Phreatic

• Phreatomagmatic

• Strombolian

• Vulcanian

Answer explanation

Phreatomagmatic volcanoes are known for their explosive eruptions that can reach heights of 20 km, producing pyroclastic flows and ashfall tephra, making them the correct choice for this question.

What drives a violent eruption of a phreatomagmatic volcano?

• fountain of lava

• pyroclastic flow

• magma and water

• hot rocks and water

Answer explanation

A violent eruption of a phreatomagmatic volcano is primarily driven by the interaction of magma and water. When magma rises and encounters water, it can lead to explosive eruptions due to rapid steam generation.

What best describes a strombolian eruption?

• fountain of lava

• pyroclastic flow

• magma and water

• hot rocks and water

Answer explanation

A strombolian eruption is characterized by the explosive ejection of lava fragments, creating a fountain of lava. This distinguishes it from other types of eruptions, such as those involving pyroclastic flows or interactions with water.

What type of volcano is characterized by a steep slope, and wide crater and is the most abundant of the three major volcanoes?

• Active volcano

• Cinder cone volcano

• Composite volcano

• Shield volcano

Answer explanation

A composite volcano has a steep slope and a wide crater, formed by alternating eruptions of lava and ash. It is the most abundant type among the three major volcanoes, which include cinder cone and shield volcanoes.

What factor affecting climate refers to the distance (in degrees) to the North and South from the equator?

• Altitude

• Climate

• Latitude

• Weather

Answer explanation

The factor affecting climate that refers to the distance from the equator is called latitude. It is measured in degrees north or south and significantly influences temperature and weather patterns.

What factor affecting climate refers to the height above sea level?

• Altitude

• Climate

• Latitude

• Weather

Answer explanation

Altitude refers to the height above sea level, making it the correct choice for the factor affecting climate related to elevation. Other options like climate, latitude, and weather do not specifically denote height.

Which side of the mountain often receives the most precipitation?

• Peak

• Leeward side

• Rain shadow

• Windward side

Answer explanation

The windward side of a mountain faces prevailing winds, causing moist air to rise and cool, leading to precipitation. This is why it typically receives the most rainfall compared to the leeward side, which is drier.

What refers to a change in the average weather of a given area or region?

• El Nino

• La Nina

• Climate change

• Global warming

Answer explanation

Climate change refers to significant changes in average weather patterns over time in a specific area. Unlike El Nino and La Nina, which are short-term phenomena, climate change indicates a long-term shift.

What refers to the global increase in the average temperature of the earth's atmosphere?

• El Nino

• La Nina

• Climate change

• Global warming

Answer explanation

Global warming refers specifically to the long-term rise in Earth's average surface temperature due to human activities, primarily fossil fuel burning, which increases greenhouse gas levels. This distinguishes it from terms like El Nino and La Nina.