Layers of the Earth
This is the scientific name for the outer layer of rock on the surface of the Earth.
What is the lithosphere?
These preserved remnants of organisms can be found across the surface of the Earth, even if the countries are no longer connected.
What are fossils?
This kind of motion pushed the tectonic plates around on the surface of the Earth.
What are convection currents?
Thin and runny magma would form this type of volcano.
What is a shield volcano?
This is the distance to the centre of the Earth.
What is 6378km? (+/-1000km accepted)
Not quite solid, not quite liquid, this hot sublayer of the Earth is just under the crust, but above the mantle.
What is the Asthenosphere?
These scars in the surface of the planet, formed by slow-moving sheets of ice, tell us that many of the tectonic plates have moved north over time.
What are glaciers?
This name is given to the thicker plates on the surface of the Earth.
What is continental crust?
Thick and viscous magma, full of ash and rock, would form this type of volcano.
What are composite volcanoes?
This the name for the crater in the top of a volcano.
What is a caldera?
This is the deepest liquid layer of the Earth.
What is the outer core?
This process creates new floors, but it's not carpet, tile, or lino, it is much deeper.
What is sea-floor spreading?
This thin type of asthenosphere might be a little wet on top.
What is oceanic crust?
A volcano that forms over a rising hot plume in the mantle is better known as this.
What is a hot-spot volcano?
This is the Hawaiian name for a kind of sharp and spikey lava that would hurt your feet when you walk on it.
What is a' a' lava? (Ah, ah)
What is the inner core?
These large structures on the surface of the Earth fit together like a puzzle, telling us that they were all once joined together to form Pangea.
What are continents?
We use this term to mean the plates are moving together.
What are convergent plates?
We use this term to describe a volcano that is not active, but could be in the future.
What is a dormant volcano?
This is the property of radioactive atoms that allows us to know how old a rock sample is.
What is half-life?
These two variables increase as your depth into the Earth increases.
What are temperature and pressure?
This measurable property of the rocks that form on the bottom of the ocean has 'flipped' many times, and tells us that the Earth is a dynamic and changing place.
What are magnetic fields? (paleo/geo/magnetism)
Plates that form rifts and create new sea floor, or great chasms in the surface of the planet, are moving in this way.
What are divergent plates?
This is the part of the tectonic plates where most volcanic and tectonic activity occurs.
What are the plate boundaries? (or Ring of Fire)
This is the name of the topic we are studying that encompasses rocks, tectonics, volcanoes and the history of Earth.
What is geology?