Earth Dynamics

What is the opening in Earth's crust through which molten rock, gases, and ash erupt?

• Divergent Boundary
• Magma
• Subduction Boundary
• Volcano

Tags

NGSS.MS-ESS3-2

What is molten rock that has formed deep within the Earth?

• Hot Spot
• Magma
• Lava
• Volcano

The volcanoes on the Hawaiian Islands form due to which of the following?

• Divergent Boundary
• Hot Spot
• Subduction Boundary
• Transform Boundary

What is the principal ingredient to all types of magma?

• Iron
• Magnesium
• Silica
• Water

Where are most volcanoes found?

• Southern Hemisphere
• Ring of Fire
• Mid-Atlantic Ridge
• Hot Spots

What factor(s) determine(s) whether an eruption will be explosive?

• The amount of gases in the magma
• The amount of silica in the magma
• The amount of gas and silica in the magma
• None of these affect the explosiveness of the volcano

What is the definition of core?

• the 2nd layer

• the center of the Earth

• molten rock

• outer layer of the Earth

What is the definition of an extinct volcano?

• the volcano is active

• the volcano is sleeping

• will never erupt again

• could erupt again

What is a dormant volcano?

• molten rock

• the center of a volcano

• will never erupt again

• a volcano that is sleeping, but could erupt agian

What is a magma chamber?

• the center of the Earth

• a large underground pool filled with liquid rocks found beneath the surface of the Earth

• thin rocky outer layer

• a volcano that is sleeping