Q3Review Flashcard #2: Earth & Space Science

Front

Which volcano in the Philippines has shown signs of activity and should be closely watched?

Back

Taal Volcano in Batangas

Front

Why can volcanic ash become heavy enough to cause roofs to collapse during a volcanic eruption?

Back

Ash is made of tiny rock fragments that accumulate and increase weight.

Front

Which volcanic factor mainly contributes to the temporary decrease in Earth’s average temperature after a large volcanic eruption?

Back

Volcanic ash and particles in the atmosphere

Front

What term best describes a volcano that has not erupted in many years but still has the potential to erupt again?

Back

Dormant

Front

Scientists study magma to predict how violent an eruption might be. Which characteristic of magma most strongly influences its explosiveness?

Back

Silica content of magma

Front

Which of the following is NOT considered a benefit of volcanic activity? Increased tourism, Fertile soil for farming, Geothermal energy production, Land destroyed by lava and ash

Back

Land destroyed by lava and ash

Front

Why do shield volcanoes have gently sloping sides resembling a wide dome?

Back

They are formed mainly by the steady emission of lava that spreads over large areas.

Front

Which description best matches a volcanic eruption known for its extreme explosiveness and significant gas release?

Back

Very tall eruption columns reaching up to 20 km with ashfall and pyroclastic flows

Front

What is the property of magma that describes its resistance to flow?

Back

Viscosity

Front

Which of the following is NOT considered an external part of a volcano? Options: Base, Crater, Slope, Summit.

Back

Crater