Three Types of Rock Look at these pictures
- Slides: 13
Three Types of Rock
Look at these pictures of rocks. • How are they different? • How are they the same?
Igneous Rocks – ‘fire rocks’ Igneous rocks are made either underground or above ground.
Igneous Rocks – ‘fire rocks’ • Underground: melted rock, called magma, cools slowly and becomes igneous rocks.
Igneous Rocks – ‘fire rocks’ • Above ground: volcanoes erupt, bringing magma to the earth's surface, it is called lava. The lava cools and becomes igneous rocks.
Igneous Rocks – ‘fire rocks’ Granite Basalt Pumice
Sedimentary Rocks – ‘sandwich rocks’ • For millions of years, little pieces of our earth (called particles) have been broken down by wind and water.
Sedimentary Rock – ‘sandwich rocks’ • These little bits of our earth are washed to the bottom of the rivers, lakes, and oceans where they settle.
Sedimentary Rock – ‘sandwich rocks’ • Many layers of small pieces of earth collect on top of each other in layers. These layers are pressed down more and more until the bottom layers slowly turn into hard rock.
Sedimentary Rock – ‘sandwich rocks’ Limestone Coal Sandstone
Metamorphic Rock – ‘changing rocks’ Metamorphic rocks are rocks that have "morphed "or changed into another kind of rock. These rocks were once igneous or sedimentary rocks.
Metamorphic Rock – ‘changing rock’ • Millions of tonnes of heat and pressure have made these rocks change.
Metamorphic Rock – ‘changing rock’ Marble Slate Quartzite
- Look to the right look to the left
- Metamorphic rocks
- What do these pictures show what are they
- Look at the film stills and discuss the questions
- Look at these pictures
- Compare the two pictures
- Look. then ask and answer
- Look at these pictures and answer the questions
- Where is it
- What do these images have in common
- What are the things common to these pictures
- Example of a claim statement
- How can one type of rock change into another type of rock?
- Igneous metamorphic sedimentary