Tectonics, rivers and coasts.

Which type of volcanoes is the most explosive?

• Shield

• Composite

• Dormant

• Extinct

Which plate margin has no volcanoes?

• Destructive

• Divergent

• Collision

• Nazca and the South America boundary

How hot is the centre of the earth?

• 1000 degrees Celsius

• 6000 degrees Celsius

• 12,000 degrees Celsius

• 1,000,000 degrees Celsius

Which element generate heat in the Earth core?

• Lokium

• Odinium

• Freyeium

• Thorium

Which one of these volcanic hazard petrified people in Pompeii?

• Ash

• Pyroclastic flow

• Lahar

• Sulphur dioxide

Which word describe the movement of water down through the soil?

• Transpiration

• Evaporation

• Percolation

• Infiltration

Which of these is the fastest way that water gets to a river?

• Surface runoff

• Throughflow

• Groundwater flow

• Infiltration

What is the name for a small river that joint a bigger river?

• Tributary

• Confluence

• Estuary

• Meander

Which of these is not a way in which rivers cause erosion?

• Attrition

• Hydraulic action

• Abrasion

• Traction

Which of these is not a way that a river carries its load?

• Suspension

• Hydraulic action

• Traction

• Saltation