Types of Rocks
List the 3 types of rocks
Igneous, metamorphic, sedimentary
What is a mineral?
A mineral is created by nature and forms the Earth’s rocks, and soils.
List two of the 5 physical properties of minerals
Magnetism
Transparency
Hardness
Lustre
Streak
________ are formed through the cooling and hardening of lava and magma.
Igneous Rocks
What is the difference between a rock and a mineral?
Minerals are created from the Earth and are inorganic. Minerals combine together to create rocks. Rocks are made of minerals
What would a rock look like if it was defined as "dull"?
Not shiny
_____________ are formed when other rocks are exposed to high temperature and pressure
Metamorphic Rocks
What is the hardest mineral on the Mohs scale? What is the softest?
Diamonds are the hardest
Talc is the softest
If a mineral is opaque, what does that mean?
You cannot see through the mineral at all
____________ are made when sand, mud and pebbles get compressed in layers, which eventually turn to rock
Sedimentary rocks
Why are diamonds so expensive?
Diamonds can only be cut by another diamond, because they are so hard.
List 4 magnetic materials
Iron, nickel, cobalt, and steel
List 3 examples of the 3 types of rocks
Basalt - Igneous rock
Marble - Metamorphic Rock
Limestone - Sedimentary Rock
___________ is the process where the remains of an organism are preserved in sedimentary rock.
Fossilization
Give an example of a cast fossil
The imprint of a shell or plant leaf