The layer of the earth which lies under the crust which consists of molten or semi-molten rock is called the (a)  

(a)   and continents lie on top of the crust.

The line where two plates meet is called a plate (a)  

Magma is moved around in the mantle by __________ ________ and this is what causes the plates to move.

(a)  

Most volcanic activity occurs around the edge of the Pacific Plate. This area is known as the _______ ____ __ ____

(a)  

The feature that is formed where two plates separate under the sea is called a ___ _____ _____

(a)  

The place where magma is stored beneath a volcano is called a _____ _______

(a)  

Name the volcano which you have studied in the USA

(a)  

Name the gas which is emitted when a volcano erupts (it can poison people)

(a)  

When volcanic material mixes with water from rivers, rain or melting snow/ice it results in a (a)  

(a)   energy is energy which is created from the heat of the earth.

(a)   occur when plates collide or slide and a build up of pressure along the fault line results in energy being suddenly released.

The point beneath the surface where an earthquake begins is called the

(a)  

The instrument used to measure the strength of an earthquake is called a (a)  

The scale used to measure the strength of an earthquake is called the _______ _____

(a)  

When an earthquake occurs under the sea it can result in a (a)