Earth Test

What is the correct order(starting form the surface) of Earth's Layers?

• crust, outer core, inner core, mantle

• mantle, outer core, inner core, crust

• crust, mantle, outer core, inner core

• outer core, inner core, crust, mantle

Earth's mantle is

• a layer of molten metal

• a layer of hot rock

• a dense ball of solid metal

• a layer of rock that forms Earth's outer skin

The transfer of energy through empty space is called

• conduction

• convection

• radiation

• density

Heat transfer within a fluid takes place by

• convection currents

• radiation

• conduction

• density

Scientists think that convection currents flow in Earth's

• continents

• mantle

• lithosphere

• inner core

According to Wegener's hypothesis of Continental drift

• Earth's surface is made up of seven major landmasses

• the continents do not move

• Earth is slowly cooling and shrinking

• the continents were once joined in a single landmass.

What is Pangaea?

• the name of a German scientist

• the name of the supercontinent that existed millions of years ago

• another name for continental drift

• the name of an ancient fossil

Any trace of an ancient organism that has been preserved in a rock is called

• landform

• continent

• fossil

• landmass

How did scientists discover that rocks further away from the mid-ocean ridge were older than those near it?

• by observing eruptions of molten material on the sea floor

• by mapping rocks on the floor using sonar

• by determining the age of rock samples by drilling on the sea floor

• by measuring how fast sea-floor spreading occurs

Most geologists that that the movement of Earth's plates is caused by

• conduction.

• earthquakes.

• convection currents in the mantle.

• Earth's magnetic field.