Interior of the Earth

As you travel from the Crust, Mantle, Outer Core and into the Inner Core...what is happening the the layers temperature, density and pressure?

• They all increase

• They all decrease

• They all stay the same

The outer core is believed to be liquid. What is the evidence behind this inference?

• Its so hot, it must be liquid

• We have drilled down and observed the liquid state

• S waves (seismic waves) cannot pass thorugh the liquid zone

• The entire interior of the Earth is solid

Scientists believe the outer and inner core are composed of iron and nickel. What scientific principal would have caused those metals to sink towards the center of the Earth?

• How big the metals are

• How dense the metals are

• How shiny the metals are

• How hard the metals are

Tags

NGSS.MS-PS2-4

The inner core is believed to solid. How can this be if the inner core is deeper in the Earth than the outer core? Isn't it hotter the deeper you travel?

• No, it is cooler the deeper you travel

• The temperature is the same. It does not change

• Both cores are liquid

• The pressure is so great, it will not allow the inner core to melt

Tags

NGSS.HS-ESS2-3

What is the difference between the lithosphere and asthenosphere that makes up the mantle?

• The lithosphere is ismade of dense solid meal whle the asthenosphere is made of liquid molten metal

• The lithosphere is a mixture of gasses while the asthenosphere is made of solid rock

• The lithosphere is molten rock that moves while the asthenosphere is ridid and thin

• The lithosphere is made of solid rock while the asthenosphere is more flexible hot rock that moves.

The formation of magma is a process driven by energy from _____________.

• the sun

• Earth's interior

Answer explanation

Earth's interior is extremely hot due to the heat from the inner core. This heat causes the mantle to be hot enough to melt rock into magma.

Match the following part of Earth's interior with the correct definition.

• oceanic crust

• dense basaltic rock layer

• continental crust

• Lowest density layer of earth made of a granite core

• mantle

• dense solid sphere of iron, nickel, and cobalt

• outer core

• semi-solid large volume layer

• inner core

• liquid iron, nickel, and cobalt

What is the difference between the lithosphere and asthenosphere that makes up the mantle?

• The lithosphere is made of dense solid metal while the asthenosphere is made of liquid molten metal

• The lithosphere is a mixture of gases while the asthenosphere is made of solid rock

• The lithosphere is molten rock that moves while the asthenosphere is rigid and thin

• The lithosphere is made of solid rock while the asthenosphere is more flexible hot rock that moves.

Answer explanation

The lithosphere is made of solid rock, providing a rigid outer layer of the Earth, while the asthenosphere consists of more flexible, hot rock that can flow, allowing for tectonic movement.

The ​ (a)   is layer of Earth's interior that is inferred to be composed of solid iron and nickel.

• Inner Core

• Mantle

• Asthenosphere

• Outer Core

What is the difference between the lithosphere and the asthenosphere that makes up the mantle?

• The lithosphere is made of dense solid metal while the asthenosphere is made of liquid molten metal

• The lithosphere is a mixture of gases while the asthenosphere is made of solid rock

• The lithosphere is molten rock that moves while the asthenosphere is rigid and thin

• The lithosphere is made of solid rock while the asthenosphere is hotter, more flexible rock that moves.