Rocks
Rock Cycle
Earth's History
Earth's Layers
Fossils
100
the breakdown of rock
What is Weathering?
100
How does a sedimentary rock turn into sediment?
weathering, erosion, and deposition
100
When we use the words older or younger to compare another rock or fossil
Relative Dating
100
Which layer is the one we live on?
Crust
100
type of rock that has layers and fossils
sedimentary
200
the transport of sediment
What is Erosion?
200
little bits of dirt, sand, and pebbles. weathered metamorphic rocks turn into this
sediment
200
Determining how old something is in numbers (specific age of fossil/rock).
Absolute/Radioactive dating
200
which layer has molten rock?
mantle
200
True or False
Fossils are common.
If false, correct the statement
false, rare
300
How are sedimentary rocks formed?
Compaction and cementation of sediments
300
igneous rock can be turned into metamorphic rock through what process?
adding heat and pressure
300
What type of rock are volcanoes made of?
igneous
300
which layer has liquid iron and nickel
the outer core
300
Where would you find layers where youngest fossils are found
top
400
the high heat and pressure can change a rock into what type of new rock?
a metamorphic rock
400
If sedimentary rock forms in layers, where would the oldest rock most likely exist?
On the bottom.
400
What does this image represent?
Law of superposition
400
Name the layers in order from outer to inner.
crust, mantle, outer core, inner core
400
where do we find earlier fossils on the geologic period chart?
To the left
500
magma that has crystallized forms what type of rock?
igneous rock
500
what type of rock is in horizontal layers that often contains fossils?
sedimentary rocks
500
Why can we not get the exact age of Earth?
The Earth keeps changing due to erosion and it keeps replenishing itself.
500
explain the outer and inner core. 2 facts
Middle of Earth
Made of Iron and Nickel
500
Explain the law of cross cutting.
If an igneous intrusion or a fault cut through existing rocks, the intrusion/fault is YOUNGEST than the rock it cuts through