Earth's Layers
This layer is the thickest.
What is the mantle?
Contains the tectonic plates (Hint: Greek translation for the word rock)
What is Lithosphere?
This is how we know that continents were once together.
What is rock strata and fossil remains from different continents are the same?
Particles in hot soup rise, cool then sink. Type of heat transfer is...
What is convection?
The theory of ___________ ___________ says that Earth's plates move slowly in various directions.
What is plate tectonics?
This layer has the highest density, temperature, and pressure.
What is the inner core?
Contains all the water on planet Earth.
What is the hydrosphere?
From holes drilled into Earth, these provide direct evidence of Earth's crustal makeup.
What are rocks?
Heat transfer with rays or waves through empty space.
What is radiation?
Explain convection using the terms: more/less dense, hotter/cooler, and rise/sink.
What is hotter material is less dense and rises, as it becomes cooler it becomes more dense and sinks?
List the four layers from outermost to innermost.
What is crust, mantle, outer core, inner core.
We breathe this o sphere.
What is the atmosphere?
By observing these waves (Hint: think earthquake), we have indirect evidence that Earth has different layers.
What are seismic waves?
This type of cycles are happening in the Earth's mantle.
What are convection cycles?
What are crust and mantle?
Convection currents here create Earth's magnetic field.
What is the outer core?
Together the rocky and metallic structures of the Earth make up this o sphere.
What is the geosphere?
Geochemists use these waves to detect fossil fuels like oil under the Earth's surface.
What are sound waves?
Heat transfer by objects in contact. Example would be touching a hot plate with your hand.
What is conduction?
____________ and ____________ crust are different in terms of their thickness and density.
What are continental and oceanic?
Outermost layer.
What is the crust?
The asthenosphere is part of this layer.
What is the mantle?
By observing these on different continents, we can make inferences about the fact that continents were once connected.
What are rock strata and fossils?
What are radioactive decay and heat left over from the Earth's formation?
Contrast Earth's inner and outer cores.
What is Earth's inner core is more dense and solid while the outer core is less dense and liquid. Both are composed of iron and nickel?