Copy of Rocks And Fossils
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PRESENTATION OUTLINE
Igneous rocks mean from fire. It's formed by fire and heat. It also has to cool because it's usually made by volcanoes and lava.
Photo by James St. John
Sedimentary means to settle. It's formed by layers over time like slate and limestone. It takes a long time for sedimentary rocks to form.
Photo by Baron Reznik
Metamorphic means to change. It's formed by extreme heat and pressure. Examples would be marble and coal.
Photo by Citizen 4474
Fossils are usually parts of animals, like shells, teeth, and bones, that get stuck in the ground for a very long time. Fossils are usually found in sedimentary rock.
Photo by James St. John
A paleontologist is a person who studies fossils. They use special X-Ray cameras so they won't damage them. They also use hammers, chisels, and rock saws to free fossils from rocks. The youngest person to find a fossil was a three year old named David Siffler. He found a fossilized dinosaur egg shell.
Photo by qmechanic
Soil comes from broken up pieces of rock, dead leaves, tree limbs, dead bugs, and those kind of things. Soil horizon "C" is made of three layers above it. Rain and ice can get into rocks and break them apart.
Photo by tranchristopher5
There are four layers in the earth. One is the Crust it is 0 degrees Celsius and 30K.M. Thick
Photo by Argonne National Laboratory
The second layer is the mantle. It is 1,000 degrees Celsius and 2,900 K.M. thick.
Photo by wockerjabby
The 3rd and 4th layers are the core and the inner core. The core is 3,700 degrees celsius and the inner core is 4,300 degrees. The core is 5,200 K.M. thick and scientists have not found out how thick the inner core is because of its temperature.
Photo by NASA's Marshall Space Flight Center
Erosion is when rocks and sediments are picked up and moved to another place by ice, water, wind, or gravity. When ice melts or wind and water slow down, they can't carry as much sediment. The result is the sediment is dropped or deposited in land forms.
Photo by Stuck in Customs
Weathering is the process where rock is dissolved, worn away or broken down into smaller pieces. There are three types of weathering.
Photo by jasonb42882
