Headwaters: The smallest, uppermost tributaries of a drainage system Igneous Rock: rock formed by the crystallization (cooling and hardening) of molten material either when magma cools slowly within the earth's crust (forming coarse-grained granitic rock) or when lava cools rapidly on the earth's surface in contact with either the atmosphere or the sea (forming fine-grained volcanic rock such as basalt or rhyolite) Karst: a set of landforms or a landscape formed by the solution of carbonate rocks.
(rock; formed; by the crystallization (cooling and hardening) of molten material; T:either when magma cools slowly within the earth's crust (forming coarse-grained granitic rock) or when lava cools rapidly on the earth's surface in contact with either the atmosphere or the sea) (lava; cools rapidly; L:on the earth's surface in contact with either the atmosphere or the sea) (the crystallization; cooling; ) (a landscape; formed; by the solution of carbonate rocks) (magma; cools slowly; T:within the earth's crust)
rock lava the crystallization a landscape magma
formed cools rapidly cooling formed cools slowly
by the crystallization (cooling and hardening) of molten material T:either when magma cools slowly within the earth's crust (forming coarse-grained granitic rock) or when lava cools rapidly on the earth's surface in contact with either the atmosphere or the sea
L:on the earth's surface in contact with either the atmosphere or the sea
by the solution of carbonate rocks
T:within the earth's crust