Archive for February, 2010
A metamorphic rock is a rock that has changed due to pressure or heat from the earths many moving processes. This can be from sedimentary or igneous rock that is in a subduction zone and as the tectonic plate starts to sub-duct the rocks get put under immense presure and heat and changes the whole composition of the rock.
one of my favorite things to do in my spare time is take out a science book that have many ideas on science activities and plenty to look at with rocks. Take a microscope or magnififying glass and get up close and personal with the rocks you collected. Start a collection or put them back when your done inspecting them so others may enjoy them as did you. Thanks Moorescience
What is a sedimentary rock and how is it made. About 75% of the rock on the earths crust is made up of sedimentary rocks. Sediment is all the stuff that breaks off of other rocks and settles to the bottom of the lake or river or the ocean. A sedimentary rock can be like a time line as far as ancient climates go and can provide a wealth of information as far as what the climate and plant and animal life is like.
This rock was made as years of erosion weathered all different kinds of rocks chipping away at them then settling in a dried up river or stream and over time hardens into the sedimentary rocks you have today. Scientist use these rocks to gain history into how the world was when the rocks were formed and cemented together. If your child enjoys the rocks and is always collecting them find him a science kit that goes over the different rock types. Thanks Moore Science
Igneous rocks our one of the three main rock types formed by magma. The word comes from the latin word (ignis) meaning born of fire. Igneous rocks have either cooled slowly in the earths crust or have cooled instantly while being expeled from a volcano.
One type of igneous rock that we talked about the other day was pillow bassalt. Pillow bassalt is magma that is high in basaltic composition has cooled rapidly under water creating some amazing rock formations. One of the greatest ways to learn more about Igneous rocks is by geting your kids a science kit on rocks or the minerals in them.