Restless Earth Flashcards
Atmosphere
The layers of gas/air around us.
Hydrosphere
The layer of water.
Biosphere
The very thin layer of living things on the crust.
Asthenosphere
The upper part of the Earth’s mantle where rocks are more fluid.
Convection Currents
Circulating movements of the magma in the mantle caused by the heat of the core.
Magnitude
The size of an earthquake.
Oceanic Crust
Part of the crust made from dense, basaltic rocks.
Plate margin
The boundary between two tectonic plates.
Prediction
Forecasting future changes.
Response
The way in which people react to a situation e.g. an earthquake.
Tectonic hazards
Threats posed by earthquakes, volcanoes etc.
Core
The central part of the Earth consisting of a solid inner core made from iron, and a more fluid outer core made from nickel.
Continental crust
Part of the crust made from less dense, granitic rocks.
Primary effects
Immediate effects, or impacts of a disaster e.g. mud flows, lava flows
Secondary effects
The after effects of a disaster e.g. disease spreads due to dirty water, loss of economy due to destruction of businesses.