7th Grade Mid-Term Exam

Front

What is a convection current?

Back

A convection current is the cycle of heated rock or metal rising, and cooling rock or metal falling.

Front

What layer of the Earth is colored orange in the diagram?

Back

The outer core.

Front

What is the force that moves the continents?

Back

Convection Currents in the Mantle.

Front

What is the cycle that powers ocean currents, weather, and tectonic plates?

Back

Convection current.

Front

What does Pangea represent?

Back

Pangea represents how the continents were arranged together as a single landmass.

Front

What is the outer core?

Back

The outer core is a layer of the Earth located beneath the mantle and above the inner core, composed of liquid iron and nickel.

Front

What is the mantle?

Back

The mantle is the thick layer of rock between the Earth's crust and outer core, where convection currents occur.

Front

What is sea-floor spreading?

Back

Sea-floor spreading is the process by which new oceanic crust is formed at mid-ocean ridges and older crust is pushed away.

Front

What is the crust?

Back

The crust is the outermost layer of the Earth, consisting of solid rock and soil.

Front

What is the inner core?

Back

The inner core is the solid, innermost layer of the Earth, composed mainly of iron and nickel.