Types of Rocks
Why are sedimentary rocks important to paleontologists?
a. They can contain fossils.
b. They can dissolve in acid.
c. They can come from lava.
d. They can sparkle in the sun.
a. They can contain fossils.
What type of rock is this?
Sedimentary
2. What are pieces of the Earth’s crust called?
a. crumbs
b. layers
c. plates
d. slabs
c. plates
Which type of rock is formed by small pieces of rock being pressed together
sedimentary
What type of rock is this?
Igneous
True or False: Rocks always follow specific pathways through the rock cycle.
False
What type of rock is formed when there is change under great pressure and heat
metamorphic
What type of rock is this?
Metamorphic
Which layer of the rocks on Earth is the oldest?
A. The top layer
B. The middle layer
C. The bottom layer
C. The bottom layer
Which type of rock is formed by cooled lava or magma
igneous
What can become a metamorphic rock?
a. a fossil
b. any rock
c. ice crystals
d. boiling lava
b. any rock
Which part of the Earth is split into large plates?
a. atmosphere
b. core
c. crust
d. mantle
c. crust
Describe how plates create mountains.
Two plates move toward and start pushing against each other. The edges of the plates then get pushed upwards, creating mountains.
Which type of igneous rock floats?
a. granite
b. obsidian
c. pumice
d. tuff
c. pumice
What type of metamorphic rock does limestone become?
a. gneiss
b. marble
c. quartzite
d. schist
b. marble
5. Which term means “breaking rocks into small pieces”?
a. cementing
b. compression
c. erosion
d. weathering
d. weathering
Explain how fossils from ocean organisms might appear at the top of a mountain.
The organisms lived and died in the ocean. Their bodies or shells fell to the ocean floor and became fossils in sedimentary rock. Then, the ocean floor was pushed up when two plates came together and made a mountain. When the floor was pushed up, it carried the fossils with it.