Upload
jocelin-neal
View
220
Download
0
Tags:
Embed Size (px)
Citation preview
Rocks and Minerals
By Sean Stanton
Types of Rocks
There are 3 types of rocks Igneous Sedimentary Metamorphic
Igneous Rocks
Igneous rocks are formed by hot molten material that cool’s and hardens.
The word igneous means fire made. This m molten material may cool
above or under the earths surface.
obsidian
Sedimentary Rocks
Sedimentary rocks are formed by layers that tell age over time.
an example of a sedimentary rock is sandstone.
To see a volcano in action click here.
Metamorphic rocks
The word metamorphic means changed in form.
Metamorphic rocks are formed by heat and/or pressure.
An example of a metamorphic rock is marble.
Marble is made from limestone heated and pressurized.
The Rock cycle
The rock cycle is a never ending process where rocks are changed.
Without the rock cycle there would not be any rocks.
Minerals
Minerals are what rocks are made of. You can tell a mineral by
luster,color,hardness and streak plate
An example of a mineral is quartz
Vocabulary
Minerals-a naturally occurring substance ,neither a plant nor animal.
Igneous rocks –fire made rock formed from melted rock material .
Sedimentary rocks-rocks formed from bits or layers of rocks segmented together.
Relative age-the age of something compared to the age of another thing.
Rock cycle-a never ending process in witch rocks are changed.
Metamorphic rock- a rock formed by heat and/or pressure.
CREDITS
SCIENCE TEXT BOOK COPYWRITE DATE 2006
To see the coolest teacher’s website click here.