Magma that cools quickly forms into igneous rock, when it cools quickly it becomes a lava rock. Lava cools very quickly at first and forms a thin crust that insulates the interior of the lava flow.
It depends on the environment and the mass of a given body of lava. Many lava flows will cool in a few hours to a few days. Globs of lava thrown into the air may at least partially solidify before they hit the ground. Lava cools much more quickly than magma underground.
Being at or near the Earth's surface, lava cools much more rapidly than magma underground.
both
Rhyolite is an igneous rock that has formed from rapidly cooling lava or ash.
Yes.
No. They would contain fewer, but larger mineral crystals when compared to igneous rocks which have cooled quickly from lava or magma.
Magma is molten rock that is below ground level so it probably wouldn't be exposed to the open air.
No. Intrusive igneous rocks have large crystals because they cool slowly.
Lava will cool quickly compared to underground magma.
Rhyolite is an igneous rock that has formed from rapidly cooling lava or ash.
Lava on the earth's surface will cool quickly.
SLOWLY
slowly
slowly
Lava cools slowly because lava is a poor conductor of heat. Lava flows slow down and thicken as they harden.
slowly
slowly
yes
Yes. The faster lava cools, the less time crystals have to form. If the lava cools slowly and has a low viscosity, atoms are able to move around more and form larger crystals.
The thermal conductivity and color of a surface determines how quickly or slowly it will heat and cool