Question | Answer |
what is continental drift? | is a thery that the continents slowly move across earth's serface. |
what is deposition? | is the process by which sediment settles out of the water or wind that is carying it. |
what is a earthquake? | the shaking that resultsfrom the movement of rock beneath earth's serface. |
what is erosion? | erosion is the destructive process in which water or wind loosen and carry away fragments of rock. |
what is falt? | falt is a break in earth's crust where slabs of rock slip past each other. |
what is a fossil? | a fossil is a trace of an ancient organisum that has been preserved in rock. |
what is geology? | geology is the study of planet earth. |
what is a ingneous rock? | is a type of rock that forms from the cooling of molten rock at or below the serface. |
what is lava? | lava is liquid magma that reaches the serface also the rock formed when liquid lava hardens. |
what is magma? | is the molten mixture of rock -forming substances , gases, and water from the mantle. |
what is a metamorphic rock? | a metamorphic rock is a type of rock that forms from a exsisting rock that is changed by heat, pressure, or chemical reactions. |
what is a mineral? | a mineral is a natrally - occuring , inorganit soild that has a crystal structure and a defininte chemical compostion. |
what is pangaea? | pangaea is the name of the singal landmass that broke apart 200 million years ago and gave rise to today's contenints. |
what are plate tectonics? | the theory that pieces of earth's lithosphere are in constant motion, driven by convection currents in the mantle |
what is richter scale? | a richter scale is a scale that rates seismic waves as measured by particular type of mechanical seismograph. |
what is a sedimentary rock? | a sedimentary rock is a type of rock that forms when particalsfrom other rocks or the remains of plants and animals are pressed and cemented together. |
what is a volcano? | a weak spot in the crust where magma has come to the serface. |
what is a glacier? | a glacier is a big moving mass of ice. |
what is hydrosphere? | the water on or surronding the serface of the globe. |
what is humus? | dark organic material in soils produced by the decomposition of vegtablesor animal matter. |
what is the lithosphere? | the lithosphere is a rigid layer made up of the upper most part of the mantle and the crust |
what is prmeable? | cabibale of being permeted. |
what is soil? | serface layer of the earth, composed of fine rock material. |
what is weathering? | state of the atmosphere with respect of the wind, temperture,ect. |