Earth's Interior
Plate Tectonics
Earthquakes& Seismic Waves
Volcanoes&Plate Tectonics
Radioactive Dating
100
This is what happens to the cooler liquid in a pan of boiling soup.
What is it sinks to the bottom?
100
A break in Earth's crust where rocks have slipped past each other.
What is a fault?
100
These waves arrive at a seismograph first.
What are P waves?
100
An area where magma melts through the crust in the middle of a plate.
What is a hot spot?
100
Most fossils are found in this rock.
What is sedimentary?
200
The part of the mantle that can bend.
What is the asthenosphere?
200
This is what Earth's lithosphere is broken into.
What are plates?
200
The point under Earth's surface where the crust breaks and triggers an earthquake.
What is the focus?
200
the molten mixture of rock-forming substances, gases, and water deep in Earth's mantle.
What is magma?
200
This is used to date materials that lived up to about 50,000 years ago.
What is carbon-14?
300
The crust and part of the mantle.
What is the lithosphere?
300
A place where 2 plates slip past each other.
What is a transform boundary?
300
A break in the crust where pieces of the lithosphere slip past each other.
What is a fault?
300
The belt of volcanoes around the rim of the Pacific Ocean.
What is the Ring of Fire?
300
Radioactive dating works best in this rock.
What is igneous?
400
This causes movements of Earth's plates.
What are convection currents?
400
The process by which oceanic crust sinks beneath trenches.
What is subduction?
400
An instrument used to measure and record ground movement during an earthquake.
What is a seismograph?
400
A weak spot in the crust where magma comes through.
What is a volcano?
400
This radioactive element works best for dating rocks.
What is potassium-40?
500
These are the 3 ways convection currents more Earth's plates.
What is 1. heating & cooling of a fluid, 2. changes in fluid's density, 3. force of gravity
500
The result of 2 ocean plates converging.
What is the formation of a trench?
500
The rating system that estimates the total energy released by an earthquake.
What is the moment magnitude scale?
500
Volcanoes along converging oceanic plate boundaries can form these.
What is an island arc?
500
This is how many grams are left from a 20-gram sample of Strontium-90 after 115.2 years which has a half-life of 28.8 years.
What is 1.25 grams?
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