Earth Science 8

the scale used to measure the magnitude of an earthquake

Gritty sand-sized particles blasted from erupting volcano

Where is a shield volcano most likely to occur?

Tall, cone-shaped mountains in which layers of lava alternate with layers of ash are called

Why are plates pushed apart by the movement of magma below a spreading ridge?

Volcanic eruptions are caused by....

This type of seismic wave only causes rock particles to move forward and backwards

What evidence was NOT used by Alfred Wegener to design his continental drift theory?

At convergent plate boundaries where oceanic and continental crust meet___________________.

At what type of boundary does subduction occur?

What type of seismic (earthquake) waves travel through the outer core?

As the depth beneath the Earth's surface increases, temperature and pressure

the layer that supports and moves the tectonic plates is called the ....

Mt. St Helen's is an example of a....

Which seismic wave is the fastest?

What did Wegener call his concept of the movement of large land masses?

Which layer of the Earth has the highest temperature?

The process of current convection occurs in the...

What name is given to a line of volcanoes that not found near a plate boundary

Continental-continental plate collisions produce

A place where two plates slip past each other, moving in opposite directions, is known as a

What instrument is used to measure the ground shaking caused by an Earthquake?

Flow of mud, water, ash and debris that can result when snow-covered volcanoes erupt

What is the name of the point inside the Earth where an Earthquake actually begins?

The youngest part of the ocean floor is found _____.

What name is given to a diverging plate boundary under the ocean?

What type of rock is the oceanic crust made up of?

What earth layer contain liquid iron and nickel

What type of volcanoes created the Hawaiian islands?

In which layers do the convection currents that move continents occur?

What type of plate boundary occurs where two oceanic plates collide

Magma is

The giant landmass where all continents were connected

The border between two tectonic plates

Where is lava found?

A stationary source of magma in the middle of a tectonic plate