When melted rock cools and hardens it forms Igneous Rocks.
Layers of sediments pressed together over time.
rocks formed deep within the earth by intense heat and pressure
tiny particles of rock, soil, and other materials
magma that reaches Earth's surface
melted rock inside the Earth
Igneous rock that forms when magma cools and hardens below Earth's surface
igneous rock that forms when lava cools and hardens above Earth's surface
Moh's Hardness Scale
shows the hardness of some common minerals; hardness is a property of minerals
the hardest mineral
shine; the way light reflects off the surface of a mineral
the way a mineral splits
a process where rock changes from one form to another
Igneous, intrusive rock used as a building material because it is very durable and strong (ex. The Great Wall of China)
Igneous, extrusive rock- very light gray to a medium gray- contains a large number of gas bubbles- looks something like a sponge- very light weight- most pieces will float in water
Name a metamorphic rock.
Marble, which is used on statues and buildings
often found in sedimentary rocks; can show us what living things looked like in the past
How are rocks broken down?
Weathering or erosion; wind, water, and ice can break down rocks and carry sediments