Rocks
More Rocks
100
What type of rock forms when smaller rocks are pressed together under pressure over time?
Sedimentary
100
Which type of rock is loosely held together?
Sedimentary
200
What type of rock forms when rocks melt, cool, and then harden?
Igneous
200
Which type of rock can be formed during a volcanic eruption?
Igneous
300
What type of rock forms when heat or pressure change an existing rock?
Metamorphic
300
What do we call the melted rock that makes an igneous rock?
Magma
400
Which of the following is a step in the formation of sedimentary rocks?
Erosion
400
What do the layers in this sedimentary rock reveal? 
How the landscape changed over time
500
What conditions are required to create metamorphic rock?
A large amount of heat and pressure
500
What type of evidence most likely can be found in layers of sedimentary rock that will explain the history of the life in the region?
Animal fossils