Dynamic Planet

Geologists obtain indirect evidence about Earth's interior by...

• measuring pressure at the surface

• studying seismic waves

• drilling through each layer

• estimation of temperature in the layers

Harry Hess used what technology to discover the mid-ocean ridge and seafloor spreading?

• gps

• seismic waves

• sonar

• convection currents

When does a divergent plate boundary form?

• when a denser plate sinks below a more buoyant plate

• when two plates slide past each other

• when two plates separate

• when two plates collide

What would you be most likely to find at a convergent boundary between two pieces of continental crust?

• volcano

• mountains

• rift

• island arc

Tags

NGSS.MS-ESS2-2

What layer of the Earth allows the Earth's lithosphere and tectonic plates to move around on?

• upper mantle

• mesophere

• outer core

• asthenosphere

Volcanic mountains are formed when ______ reaches the surface.

• pressure

• density

• magma

• water

Tags

NGSS.MS-ESS2-1

Which layer is a slowly flowing semi-solid material?

• mesosphere

• continental crust

• asthenosphere

• upper mantle

The ________ of rocky material determines how fast earthquake (seismic) waves travel.

• volume

• density

• thickness

• mass

Tags

NGSS.MS-PS4-2

What two main features can form where oceanic crust subducts under continental crust?

• volcanoes and trenches

• ocean ridges and rift valleys

• fault block mountains and volcanic mountains

• transform boundaries and divergent boundaries

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

The tectonic plates are found in what physical layer

• crust

• lithosphere

• mantle

• asthenosphere

Tags

NGSS.MS-ESS2-3