Rock Cycle
Weathering and Erosion
100
List the 3 rock types
Sedimentary, Igneous, Metamorphic
100
What is the difference between weathering and erosion?
1.) Weathering breaks down the rocks.
2.) Erosion takes the sediment away.
200
Describe the process igneous rocks forming.
Igneous rocks are formed from Lava or magma cooling and crystallising.
200
List two pieces of evidence that let you know weathering and erosion has occurred.
- smooth surfaces from water running over rocks for a long period of time
- different shapes where rocks has eroded
- cracked/crumbling rock
- other answers...
300
List 2 characteristics of sedimentary rocks.
- rocks have visible layers
- may have fossils
- weak and crumbly
- other responses
300
Which rock type erodes the fastest? Explain why.
Sedimentary. It is weak and crumbly compared to other rock types because it is made of compacted sediment.
400
Draw a Venn Diagram comparing intrusive and extrusive igneous rocks.
see teacher for answer.
400
Granite is a Igneous rock, Schist is Metamorphic. All other rocks in this diagram are sedimentary. Explain what would happen to rock land scape over years of erosion.
see teacher for answer.
500
What Pressure and Heat range does Blueschist form at?
(Pressure) 6-12 kbar
(Temp) 200-500.
500
Identify 2 pieces of evidence of weathering and erosion in the is picture.
1. Curved smooth surfaces from water washing against bottom of rock formations.
2. Crumbling rock on top of formation.
3. Missing rock.