Volcanoes, Earthquakes, and Earth's Layers

Which is the thickest layer of Earth?

• crust

• mantle

• outer core

• inner core

Which layer is thinnest?

• crust

• mantle

• outer core

• inner core

Which layer is plastic-like and allows the crust to flow over it?

• lithosphere

• outer core

• asthenosphere

• inner core

Which layer is solid and made of iron and nickel?

• crust

• mantle

• inner core

• outer core

What is the order of Earth's layers from most dense to least dense?

• crust, mantle, outer core, inner core

• crust, outer core, mantle, inner core

• inner core, outer core, mantle, crust

• inner core, outer core, crust, mantle

Which layer is considered the tectonic plates of Earth?

• lithosphere

• asthenosphere

• mesosphere

Tags

NGSS.MS-ESS2-3

How do scientists know about the layers of the Earth?

• by digging down deep into the core and bringing up samples

• by studying the seismic waves made by earthquakes

• by studying and measuring temperature of lava from volcanoes

• by taking a facebook poll

Tags

NGSS.MS-ESS2-3

Which is the only entirely liquid layer of the Earth?

• the upper mantle

• the outer core

• the inner core

• the lower mantle

The epicenter of an earthquake is

• The point below the surface where rock begins to break and the first motion occurs

• The seismic station closest to the earthquake

• The place where the greatest damage occurs

• The point on the surface directly above the focus

An instrument that detects and measures earthquakes is a

• seismogram

• focus seismic map

• focus

• seismograph