Tristan
______ rock is formed due to intense heat and pressure
Metamorphic
_______ are found most likely in _______ rock and they give us evidence of past life on Earth.
Fossils, sedimentary
The ______ is the LAND portion of Earth.
LITHOSPHERE
Earth's crust is made of _____ and _____.
Rocks and minerals
The process of ______ occurs when ocean crust digs into the mantle, going UNDER it.
(Think SUBmarine- goes BELOW the water)
subduction
This type of rock is made when MAGMA cools and solidifies.
Igneous
The first life on Earth:
bacteria
This protects life on Earth from harmful sun rays.
ozone
This law states that the oldest rock layer is at the bottom:
Law of Superposition
When magma pushes up from the mantle a _____ is formed.
ridge
living things (plants, microscopic organisms, animals)
The supercontinent called ______, proved that the land we can see (________) were all once pieced together.
Pangaea, continents
The liquid center portion of Earth made of Iron and Nickel:
outer core
When the plates are pushed AWAY from each other they are called _________ plates. (Think: like a road DIvides- it splits, or a cell that DIvides)
DIVERGENT PLATES
The playdough like layer which moves the tectonic plates around is called the:
mantle
When we try to date the approzimate age of a rock layer comapred to another this is called:
relative dating
The solid center of the Earth, made mostly of iron:
inner core
_____ are composed of a specific combination of elements and have PROPERTIES that can be TESTED.
minerals
Example of events that cut across rock are faults and:
igneous intrusions
Convergent, trench
This is the gaseous (air) part of the Earth which supports life.
ATMOSPHERE
When any of these events occur (TUFF- tilting, uplifting, folding or faulting) the rocks have broken the Rule of:
Horizontality
When tectonic plates collide, these 4 things can occur with the rocks:
(Think TUFF)
Tilting, Uplifting, Folding, Faulting
This rule states that anything that cuts across another object is newer than the object it crossed.
Cross cutting rule
All of the bodies of water on Earth make up our:
HYDROSPHERE