Clastic sedimentary rocks are made up of pieces (clasts) of pre-existing rocks. Pieces of rock are loosened by weathering, then transported to some basin or depression where sediment is trapped. If the sediment is buried deeply, it becomes compacted and cemented, forming sedimentary rock.
Answer:
False
Explanation:
A tornado watch is issued when the conditions are ideal for a tornado to form and covers a broad region. Tornado warnings are when a tornado has been spotted or appears on the radar.
Answer:
They have small crystals.
Explanation:
Extrusive igneous rocks form when lava reaches the Earth's surface a volcano and cools quickly. Most extrusive or volcanic rocks have small crystals. Examples include basalt, rhyolite, andesite, and obsidian. Intrusive, or plutonic, igneous rocks form when magma cools slowly below the Earth's surface.