Earth's layers

How do we know what the earth is made out of?

• Radioactive decay, gravity, seismic waves, magnetics

• Gasses, gravity, longitude waves, seismic waves, magnetics

• radioactive decay, gasses, gravity, radioactive waves, magnetics

• decay, gasses, and liquids

How does gravity contribute to knowing the Earth's structure?

• Because that was how the planet was formed and every other planet has a core/mantle/crust

• Radioactive elements making up the Earth contribute to the inner core heat.

• Scientists believe there must be Iron in the core to contribute to this magnetic field.

• Measuring waves from earthquakes allows scientists to learn a lot about the inner structure of our planet.

How do seismic waves contribute to knowing the Earth's structure?

• Because that was how the planet was formed and every other planet has a core/mantle/crust

• Radioactive elements making up the Earth contribute to the inner core heat.

• Scientists believe there must be Iron in the core to contribute to this magnetic field.

• Measuring waves from earthquakes allows scientists to learn a lot about the inner structure of our planet.

How does radioactive decay contribute to knowing the Earth's structure?

• Because that was how the planet was formed and every other planet has a core/mantle/crust

• Radioactive elements making up the Earth contribute to the inner core heat.

• Scientists believe there must be Iron in the core to contribute to this magnetic field.

• Measuring waves from earthquakes allows scientists to learn a lot about the inner structure of our planet.

How does magnetics contribute to knowing the Earth's structure?

• Because that was how the planet was formed and every other planet has a core/mantle/crust

• Radioactive elements making up the Earth contribute to the inner core heat.

• Scientists believe there must be Iron in the core to contribute to this magnetic field.

• Measuring waves from earthquakes allows scientists to learn a lot about the inner structure of our planet.

What is the red area?

• Mantle

• Inner core

• Outer core

• crust

What is the orange area?

• Mantle

• Inner core

• Outer core

• crust

What is the yellow area?

• Mantle

• Inner core

• Outer core

• crust

What is the black area?

• Mantle

• Inner core

• Outer core

• crust

What is the outermost layer?

• crust

• mantle

• outer core

• inner core