Year 8 Humanities Tectonic Activity

Front

The movement of the tectonic plates is caused by

Back

convection currents in the mantle

Answer explanation

The movement of tectonic plates is primarily driven by convection currents in the mantle, which are caused by the heat from the Earth's core. This process creates the necessary forces to move the plates.

Front

A plate boundary where two plates move away from each other is called

Back

Divergent Boundary

Answer explanation

A plate boundary where two plates move away from each other is called a Divergent Boundary. This process creates new crust as magma rises to the surface, distinguishing it from Convergent and Transform boundaries.

Front

Where one plate slides under another plate?

Back

subduction zone

Answer explanation

The correct answer is 'subduction zone' because it describes the area where one tectonic plate slides beneath another, leading to geological phenomena such as earthquakes and volcanic activity.

Front

The area around the pacific plate where boundaries form is called...

Back

ring of fire

Answer explanation

The area around the Pacific Plate where tectonic boundaries form is known as the 'Ring of Fire.' This region is characterized by high volcanic and seismic activity, making 'ring of fire' the correct choice.

Front

The San Andreas Fault in California is known as an active earthquake area. What type of boundary is it?

Back

Transform

Answer explanation

The San Andreas Fault is a transform boundary where two tectonic plates slide past each other. This movement causes frequent earthquakes, distinguishing it from converging or diverging boundaries.

Front

The Himalayas in Asia are an example of what type of plate boundary?

Back

continent-to-continent convergent

Answer explanation

The Himalayas are formed by the collision of the Indian and Eurasian tectonic plates, which is characteristic of a continent-to-continent convergent boundary. This process creates mountain ranges as the plates push against each other.

Front

When pressure builds between two tectonic plates, it can suddenly release causing a (an) ______________________

Back

Earthquake

Answer explanation

When pressure builds between tectonic plates, it can suddenly release, resulting in an earthquake. This release of energy causes the ground to shake, which is the defining characteristic of an earthquake.

Front

The rigid section of the earth that move as a unit is called..........

Back

Tectonic plates

Answer explanation

The rigid sections of the Earth that move as a unit are known as tectonic plates. These plates float on the semi-fluid asthenosphere and are responsible for geological activities such as earthquakes and volcanic eruptions.

Front

What is the name of the plate boundary that pulls apart?

Back

Divergent

Answer explanation

The plate boundary that pulls apart is called a divergent boundary. At these boundaries, tectonic plates move away from each other, leading to the formation of new crust, such as mid-ocean ridges.

Front

What is the name of the plate boundary that pushes together?

Back

Convergent

Answer explanation

The plate boundary that pushes together is called a convergent boundary. At these boundaries, tectonic plates collide, leading to geological features like mountains and earthquakes.