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Science:Earthsurface
study 6th grade
Term | Definition |
---|---|
Core | 1st in the earth's layers |
Crust | 5th and last in the earth's layers |
Mantle | 2nd in the earth's layers |
Lithosphere | 4th in the earth's layers |
Asthenosphere | 3rd in the earth's layers |
Weathering | the breakdown of rocks at Earth's surface |
Erosion | When soil and rock is worn away AND move somewhere else |
Deposition | when soil or rocks are added to a landform or land mass |
three main types of plate boundaries. | Convergent, divergent, transform |
Divergant | Two oceanic plates move AWAY from each other |
Congergant | Two plates COLLIDE with each other |
Transform | Two plates SLIDE past each other |
What disaster occurs at the Divergent boundary | Volcanic eruption, earthquake |
What disaster occurs at the Convergent boundary | Earthquake |
What disaster occurs at the Transform boundary | Earthquake |
What is the theory of plate tectonics | The movement of earth's plate causes geological phenomenon (crust lies on the tectonic plates) |
What is an Earthquake | A sudden and violent shaking of the ground because of movements within the Earth's crust |
Epicenter | directly above the Hypocenter, Where the Earthquake is strongest |
Hypocenter | where the Earthquake starts, below the surface |
Three seismic waves | P waves, S waves, Surface waves |
P waves | first and fastest waves detected (up/down) |
S waves | second fastest wave (side/side) |
Surface waves | Travel along earth's surface (causes most damage) |
What are the three types of volcanos | Cinder cone, Composite, Shield |
Cinder cone | 1,000 ft max lava comes from a single point |
Composite | Over 8,000 ft, shaped like a cone |
Shield | Wide thin layers of lava, shaped like a shield |
order of Earth Layers | Core, Mantle, Asthenosphere, Lithosphere, Crust |