Front

What is the thinnest layer of the Earth?

Back

crust

Front

Why is the core more dense than the mantle or crust?

Back

It has more iron.

Front

How do scientists know the Earth has layers?

Back

Seismic waves data

Front

What process is the pictures showing?

Back

convection

Front

What processes causes tectonic plates move? Options: mountain building, earthquakes, convection currents, water cycle, subduction zones

Back

convection currents

Front

What kind of energy moves the molten rock in Earth's mantle?

Back

thermal energy

Front

What phenomena takes place that results in the formation of new crust at mid-ocean ridges?

Back

magma rising to the surface

Front

What is the thickest layer of the Earth? Options: the crust, the mantle, the outer core, the inner core

Back

the mantle

Front

What is the correct order (starting from the surface) of Earth's layers? Options: crust, outer core, inner core, mantle, mantle, outer core, inner core, crust, crust, mantle, outer core, inner core, outer core, inner core, crust, mantle

Back

crust, mantle, outer core, inner core

Front

Less dense materials rise to the top.

Back

True