2. Igneous rocks, also called volcanic rocks, are formed
3. Common igneous (volcanic rocks) are :
4. Sedimentary rocks are formed either in water or on land. They are layered accumulations of sediments:
5. Common sedimentary rocks include:
6. Sometimes sedimentary and igneous rocks are subjected to pressures so intense or heat so high that they are completely changed. They becomerocks, which form while deeply buried within the Earth's crust. The process of metamorphism does not melt the rocks, but instead
7. Minerals are classified according to chemical composition. There are seven major chemical groups:
8. Minerals that are composed of atoms of a single element are referred to as .
9.The minerals that make up theclass include those in which oxygen is combined with one or more metals.
10. The silicate mineral class is considered to be the most important of all the mineral classes. About 25% of the known minerals and nearly 40% of the common ones are silicates. Nearly % of the igneous rock-forming minerals are silicates, which means that they make up over 90% of the.
11. What characteristics or properties are used to identify and describe minerals? Write about the meaning of each:
13. Read and describe the rock cycle here:
Some pictures of rocks. Some places where you can search for rocks.
When you are finished, raise your hand to be printed. Please make sure you put your name at the top. Then you can look at the slide show here. Just click next at the bottom to continue.
Created by: K. Beck Technology Specialist Lake Norman Elementary 2004
North Carolina Standard Course of Study Goals and Objectives: LEARNNC. GRADE 4 - Science 2.1, 2.2, 2.3 Technology 2.1, 2.2, 3.2, 3.5, Language Arts 2.2, 2.5, 2.7, 3.5, 4.2, 4.10, 5.1, 5.3, 5.4, 5.9 Information Skills 1.7, 1.8, 4.4,