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earth's systems
flash cards
| Question | Answer |
|---|---|
| what is the lithosphere? | all the land in the earths system |
| which sphere includes all the planets living things? | biosphere |
| define atmosphere | it contains all the air in the earth's system |
| what is the hydrosphere? | it contains all the solid, liquid and gaseous water of the planet. |
| what are "plates"? | they are pieces of the crust |
| what are the plate types? | continental and oceanic |
| which type of plate is thicker | continental |
| what is a pangea | it is the name of a supercontinent formed 100-200 million years ago |
| what is plate tectonics | it is a theory of the movement of continents |
| which type of plate boundary involves two plates moving towards one another? | convergent |
| what is a divergent boundary | it involves 2 plates moving apart |
| which boundary involves two plates sliding along side one another | transform boundary |
| what will form when two continental plates converge? | fold mountains |
| when 2 oceanic plates converge what forms? | magma will rise to form volcanoes |
| what does the build up of pressure due to transform boundary result in? | earthquakes |
| what is the point where an earthquake starts called? | focus |
| what is the strength of an earthquake known as? | magnitude |
| what scale indicates the earthqaukes strength? | Richter scale |
| what are the layers of the earth? | crust , mantle, and core |
| what causes the plates to move? | convection currents in the mantle |
| what can be found directly under the plates of the earth's crust | a soft mantle |