Earthquakes and Volcanoes 4th grade Science
________ is a mountain that forms when red-hot melted rock flows through a crack onto Earth's surface.
_______ is the Earth's outer layer and includes the rock of the ocean floor and large areas of land.
________ is the thickest layer of Earth and is found just below the crust.
_______ is a vibration, or shaking, of the Earth's crust.
_______ is the dense center of the Earth and is a ball made mostly of two metals (iron and nickel).