By: Rhian Gorman

a mountain made mostly of rock

a mountain made of huge tilted blocks

the breaking down of rocks

rocks that are picked up and carried away

a mixture of  weathered rock and decayed plant and animal

material in soil formed by the breakdown of plant matter

any of the layers of soil from surface to the bedrock

water that soaks into the soil

the downhill movement of Earth material

the dropping of of sediment

a huge sheet of ice and snow that moves

many sizes of sediment deposited by a glacier

a deposit of many types of sedement

a naturally occurring solid

a rock that forms when hot

forms from pieces of other rock

forms from another rock that is changed by heat

changing into one kind of rock to another

the idea  that in a series of rock layers bottom oldest top newest

age of a rock compared to another rock

Earth's rock layers in order from oldest to newest

imprint

the remains of a living thing that only lived a short period of time

the time it takes for a half-mass in a rock to break apart

the age of a rock in years

one of the four large stretches of time