Last revision questions

Question 1

What is the Richter Scale? Describe this in detail (in particular how much stronger an earthquake is at each level).

Answer 1

To measure the magnitude of earthquakes of moderate size (that is, magnitude 3 to magnitude 7)

Question 2

What is a seismograph?

Answer 2

The seismograph is a device to measure the movement of the earth, the force and duration.

Question 3

What is a primary wave?

Answer 3

Can travel through fluids and solids, transfer their energy through compression and are the fastest wave.

Question 4

What is a secondary wave?

Answer 4

Can only travel through solids, larger amplitude, Secondary waves are slower than Primary waves.

Question 5

What is a surface wave?

Answer 5

Slower and most powerful because of higher amplitude, can travel longitudinal or transverse.

Question 6

Describe a divergent plate boundary and what are some common features of this type of boundary?

Answer 6

Two tectonic plates moving away from one another Causes: mid-ocean ridge, rift valleys

Question 7

Describe a convergent plate boundary, the different types and what are some common features of this type of boundary?

Answer 7

Two tectonic plates have collided with each other, one has gone below the other and has sub-ducted under into the mantle.

Continental VS Continental
Continental VS Oceanic
Oceanic VS Oceanic

Question 8

Describe a transform fault plate boundary and what are some common features of this type of boundary?

Answer 8

Two tectonic plates trying to push two different ways against each other (sliding against each other). The most dangerous tectonic plate boundary.

Question 9

Describe the ‘Plate Tectonic Theory’ and state at least two types of evidence to support Wegener’s original theory.

Answer 9

Plate tectonics is the theory that Earth’s outer shell is divided into several plates that glide over the mantle, the rocky inner layer above the core. Evidence; Age of the floor, continents fit like jigsaw puzzles