Plate tectonics Exam IGCSE

What scale is used to measure earthquakes?

• Richter

• Ritter

• Beaufort

• pH

The type of plate boundary where one plate is forced under another is called a ____________________

• Subjective zone

• Collision zone

• Subduction zone

• Subversive zone

The tectonic plates move due to ___________________________ in the mantle

• pressure

• convection currents

• earthquakes

The inner core is solid due to ___________________

• it is made of magma

• convection currents

• high temperature

• high pressure

The Mid-Atlantic Ridge is an example of a (a)   plate boundary

An example of a (a)   zone is the Himalayas.

A composite volcano is made of layers of lava and ____________.

• Ash or cinders

• magma

• pyroclastic flow

• melted snow

A shield volcano is made of ______________

• ash

• cinders

• tephra

• lava

A fast flowing cloud of gases and ash is called a (a)  

A _______________ is a mixture of mud, water (melted ice) and ash from a volcanic eruption

• pyroclastic flow

• lava

• lahar

• magma