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by studying seismic wave travel times, scientist have determined that the lithosphere, which includes the crust and the top of the upper mantle is made up primaraly of the ingenueos rocks granite, basalt and peridotite

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Q: How have scientists determined the composition of earth's mantle and core?
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How have scientists determined the composition of the earths mantle?

by studying seismic wave travel times, scientist have determined that the lithosphere, which includes the crust and the top of the upper mantle is made up primaraly of the ingenueos rocks granite, basalt and peridotite


Where is earths greatest bulk composition?

mantle


What is earths upper mantle composition?

hard rock


What are ways the scientists can learn about the earths mantle?

seismometers


What is the composition and approximate thickness of the mantle?

Earths mantle is less dense and very hot. The mantle is 2885km thick.


Have scientists drilled into the earths Lower Mantle?

No. This has not occurred, yet.


How can scientists lean about the mantle if they cannot study it directly?

scientists must use observations of earths surface to draw conclusions about the mantle.


How can scientists infer the consistency of the earths mantle?

They can do this by how and how quickly seismic waves can move through the mantle.


What is the composition of the mantl?

The earths mantle is less dense and it's very hot.


Which structural layer of earths interior have scientists concluded is liquid?

the mantle


Why do scientists look to the ocean to research the mantle?

Why do scientists look to the ocean floor to research the mantle? Because magma from the mantle flows out of active volcanoes on the ocean floor. These underwater volcanoes have given scientists many clues about the composition of the mantle.


Why do scientists look to the ocean floor to research the mantle?

Why do scientists look to the ocean floor to research the mantle? Because magma from the mantle flows out of active volcanoes on the ocean floor. These underwater volcanoes have given scientists many clues about the composition of the mantle.