Earth's layers

quiz- thursday october 16th

Examples of direct evidence about Earth's interior in the form of______.

rock samples

Examples of indirect evidence about Earth's interior gained by _______

recording and studying seismic waves.

What is the correct order (starting from the surface) of Earth's layers?

crust, mantle, outer core, inner core

Earth's inner core is _______

a dense ball of solid metal.

Earth's mantle is ______.

a layer of hot rock.

Scientists think that convection currents flow in Earth's _____.

mantle.

True or False

Pressure increases the deeper you go towards the center of Earth.

True

The part of the mantle called the ____________________ is made of soft rock that bends like plastic.

asthenosphere

Geologist

A scientist who studies the forces that make and shape planet Earth.

Rock

The material that forms Earth's Hard surface.

Geology

The study of planet Earth.

Seismic Wave

Wave of energy that is released during an earthquake.

Crust

The layer of rock that forms Earth's outer surface.

Basalt

A dark, dense rock that makes up the oceanic crust

Granite

A less dense rock that makes up the continental crust.

mantle

The layer of hot, solid material between Earth's crust and core.

Lithosphere

A rigid layer made up of the uppermost part of the mantle and the crust.

Asthenosphere

The soft layer of the mantle on which the lithosphere floats. It has convection currents that develop within it.

Outer Core

A layer of molten iron and nickel that surrounds the inner core of Earth.

Inner Core

A dense sphere of solid iron and nickel in the center of the Earth.

Convection in the mantle

the movement of rock within the mantle where hot rock rises and cooler rock sinks

indirect evidence

Evidence that is made up of inferences based on data collected

Direct evidence

Evidence that comes from data collected using 5 senses

Observation

Data collected using 5 senses

Inference

Idea or conclusion reached that is based on evidence collected