Oceans
5 large bodies of water that are connected and make up most of the Earth's water
Continents
Earth's 7 largest landmasses
Magma
melted rock in the mantle
Tectonic Plates
Large areas dividing the Earth's surface
Earthquakes
Shaking of land that occurs when a fault moves suddenly
Faults
large cracks in the Earth's surface
Focus
Exact place where an earthquake occurs
Epicenter
Place on the surface of Earth directly above the focus
Tsunami
Large mass of moving water caused by a strong earthquake under the ocean
Volcano
Releases magma, cinders, ash and gases
Fossils
Formed when animal tracks and imprints of plants are made in sediment
Weathering
breaking apart of rocks
Erosion
Natural process of moving rocks and sediment
Soil
Mixture of rock, sediment and organic matter
What are the 3 ways tectonic plates move?
Collide, slide and separate
Crust
outermost layer of Earth
Mantle
layer just below crust
Outer Core
third layer of Earth
Inner Core
center of Earth
Organic layer
made up of decaying plants and animals
Topsoil layer
mixture of humus and sediment; worms, insects and animals live here
subsoil layer
has less humus and fewer living things
rock layer
last layer; mixture of loose rock and clay; no humus
Metamorphic rock
Formed by heat and pressure
Sedimentary
formed when sediment builds up and presses on lower layers of sediment
Igneous
formed when magma cools and hardens below the Earth's surface or after a volcano erupts