________ of the earth’s surface is covered by water:

Earth’s inner core is composed mainly of:

Earth’s inner core is surrounding by:

Earth’s outer layer is called the ________ :

Tectonic plates:

(select all that apply)

Mountains form where tectonic plates diverge on continents.

Volcanic activity is related to tectonic plate movement:

Seismologists study:

Which crust is the thickest but least dense?

During an earthquake, _____ is released into the earth.

Most of the Earth’s volcanoes are found in _____.

The waves generated by an earthquake are _____ waves

Which layer of the earth is divided into plates?

Hot, molten rock deep below Earth’s surface is called

The solid outer layer of the Earth that consists of the crust and the rigid upper layer of the mantle is called the

Which layer of the earth is the convective layer (connects the others)?

German scientist Alfred Wegener developed the hypothesis of

The Ring of Fire, a region with many active volcanoes, circles which ocean?

Volcanoes occur at all of the following (select all that apply):

Most mountains occur at ______ boundaries.

What is most likely the driving force behind plate tectonics?

The point beneath Earth’s surface where rock breaks under stress and triggers an earthquake is called the

The type of seismic waves that arrive at the surface first and move by compressing and expanding the ground like an accordion are called

When rock layers are stretched apart at divergent boundaries, this is called

A crack in the crust related to an earthquake is called a

What causes the tectonic plates to move?

At which location would earthquakes be least likely to occur?

What is the difference between magma and lava?

At the mid-ocean ridge, which part of the crust is the oldest?

_____ means "resistance to flow"

Which type of plate boundary creates new crust?

A _____ is an instrument that records the vibrations in the ground and determines the location and strength of an earthquake.

What are possible results at convergent boundaries (select all that apply)?

What are possible results at divergent boundaries (select all that apply)?

What are possible results at transform boundaries (select all that apply)?

A ____ wave is the type of seismic wave that causes the most damage.

Which letters corresponds to the outer core?

Which letters corresponds to the crust?

What type of boundary is shown on the map of California?