science
These are the layers of Earth
Crust - Thin outer
Mantle - thickest later. Rock that flows slowly
Outer Core - liquid iron & nickle
How were mid ocean ridges formed?
1. Plates move apart
2. which causes magma to rise
3. this new magma hardens and turns into mid-ocean ridges
This increases in the troposphere
Carbon Dioxide
These fossils are evidence of activity, not the organism itself.
Trace Fossils
This is photosynthetic bacteria that helped oxygenate the earth.
Cyano bacteria
describe the difference between the oceanic crust and continental crust?
Oceanic Crust: Thinner, more dense, basalt rock, younger
Continental Crust: Thicker, less dense, granite rock, older
These are areas where heat from magma rises from deep within the mantle, often in the middle of plates
Hot spots
These type of atoms break down at a predictable rate and can be used for ratiometric dating.
Unstable Atoms
These fossils are widespread species that lived for a short time and are used to determine Rock Ages
Index Fossils
This kind of air has more water vapor than cold air.
Warm Air
Describe Divergent, Convergent, and transform
Divergent: plates move apart
Convergent: move together
Transform: plates slide past eachother
When rocks break into smaller rocks without changing composition, its called this.
Physical Weathering
In these types of layers, you can find oldest rocks at the bottom and newest on top.
Undisturbed Layers
This era is when the dinosaurs lived.
Cenozoic Era
This is the difference between relative and absolute age.
Relative age is older or younger than something its compared to.
Absolute is the actual age counted in time.
The Himalayan Mountains formed when these plates collided.
Indian Plate & Eurasian Plate
Water is an excellent solvent because it is this kind of molecule.
Polar Molecule
Most organisms never to (this) because conditions have to be just right.
Fossilize
This describes the dropping of sediment after transport.
Deposition (it gets deposited somewhere else)
The Earth’s atmosphere is 78% this.
Nitrogen
These currents cause material in the mantle to move in circular movements. Name the current and what causes the circular movement.
Convection Currents. Heat causes the material to move, when it heats up, it goes up, when it cools down, it goes down.
The basic properties of (this) are Evaporation, Condensation, Precipitation, runoff, infiltration
water
This spans the vast majority of Earth's history, which includes about 88% of the planet's total existence.
Precambrian Time Period
This forms when CO2 dissolves in water and helps dissolve limestone
Carbon Acid
Describe the difference in density between Warm and cold air.
Warm water is less dense, cold air is more dense.