What you should know news
Jake H
Plates and boundaies
We know the plates have moved because of continental drift. There are divergent, convergent, and transform boundaries. Most divergent boundaries are along mid ocean ridges. There are also some on land though the ones on land involve plates sliding apart. A convergent boundary is where two plates come together. A transform boundary is where two plate slip past eachother. There is evidence plates have moved from land features, fossils, and climate.
Mountains
When two plates collide they can create mountains. Mountains are very large land forms that effect the surface of earth alot when traveling.
volcano
A volcano can effect the earths shape of earth a lot because not only that they are a land form but they can create new land forms because of the lava they spew out.
tsunami
Tsunamis shape earths surface. They are caused by plate shifting under water. That shifting causes a giant wave. The plates that are moved shape earths surface.
rock destruction
rock destruction
Erosion is the destruction process in which a rock fragments are carried away by water or wind or ice. They loosen the rock then carry fragments of rocks away. The three main kinds of erosion is wind, water, and ice.
dallas
Over spring break I went to Dallas Texas. I went there to visit my cousin. It was cool because all the buildings. We got to go to the aquarium and on a tour of the Dallas cowboys stadium.
Bone Prints
Law of superposition
The law of superposition tells us that pretty much the youngest layer of rock is at the top and the older is at the bottom. Each layer is younger than the one below it and older that the one above it.
Fossils
Fossils can tell us about the history of the earth. They can do this because scientists can look at the fossils and see animal that used to be around but are now extinct.
They are all fossils but different looks
Not all fossils are the same. Fossils may look similar but they are different. Also different animals have different shapes.
Pebbles to Bolders
Igneous
This rock is igneous. Igneous rocks are formed by lava melting and hardening.
Sedimentary
Sedimentary rocks are formed when rocks are cemented and pressed together.
Metamorphic
Metamorphic rocks are formed by other rocks that are changed from heat and pressure.
Rock Cycle
The rock cycle is a series of processes on the surface and inside the earth that slowly changes rocks from one type to another. With the rock cycle no matter what kind of rock you start as you can be any kind through the rock cycle.
Minerals
Minerals
Many minerals form from evaporation. They can also form magma and lava. When it hardens into slate there are crystals left over. Each mineral has its ow characteristics that can identify it.
enjoy
I enjoyed learning about natural disasters and the effects