Volcanoes

A crack in the Earth's crust where hot liquid rock comes out is called a:

• geyser

• volcano

• earthquake

• tsunami

What is magma?

• Magma is hot rock on the Earth's surface

• Magma is hot rock deep inside the Earth

• Magma is cold rock

• Magma is gas

Which of these is NOT one of the three main types of volcanoes discussed?

• Shield Volcano

• Cinder Cone Volcano

• Stratovolcano

• Underwater Volcano

What is the "Ring of Fire"?

• A circle of active volcanoes around the Pacific Ocean.

• A special type of lava that glows brightly.

• A famous volcano in Hawaii.

• A place where the Earth's core is visible.

Which of the following is a common cause of volcanic eruptions?

• Increase in animal population

• Growth of plants on mountains

• Changes in weather patterns

• Movement of tectonic plates

What is the name of the opening at the top of a volcano where lava escapes?

• Ridge

• Crater

• Valley

• Plateau

What is lava?

• Lava is hot rock deep inside the Earth

• Lava is cold rock

• Lave is hot rock that comes out onto the Earth's surface

• Lava is gas

What is one immediate effect of a volcanic eruption on the surrounding environment?

• Formation of glaciers

• Release of ash and gases into the air

• Increase in rainfall

• Sudden drop in ocean levels

Which of the following can be a danger to people living near an erupting volcano?

• Lava flows

• Snowstorms

• Earthquakes only in the ocean

• Sandstorms

What is the term for the mixture of hot gas, ash, and rocks that rushes down the side of a volcano during some eruptions?

• Glacier melt

• Pyroclastic flow

• Earthquake

• Rainfall