Earth's Interior

The oceanic floor is made of?

• Granite

• Basalt

• Cookies

• Water

True or False: Scientists have been able to make observations beneath Earth's crust.

• TRUE:

  Those observations come from seismic waves

• TRUE:

  Those observations come from rock samples of the asthenosphere

• FALSE:

  Scientists have not been able to take samples beneath Earth's crust

• FALSE:

  Scientists can only make guesses about Earth's interior

Select all that are true about s-waves

• They are slower than P waves

• S stands for stationary

• They travel as transverse waves

• They cannot travel through liquids

How many major layers are there in Earth's interior?

• 2

• 3

• 4

• 6

What is Earth's inner core like? Select all that are true:

• Solid metal ball

• About as hot as the surface of the sun

• Intensely pressurized

• pretty dangerous, lots of weird fungi and dinosaurs, don't recommend for vacation.

Scientists know that Earth's outer core is liquid because....

• P-waves can't travel through it

• S-waves can't travel through it

• They are just guessing

• They've taken direct samples

What is the most common element in earth's inner and outer core?

• iron

• hydrogen

• potassium

• gold

Which layer of Earth's interior generates its magnetic field?

• Mantle

• Crust

• Outer core

• Inner core

This layer is solid to semi-solid and is slowly circulating because of convection

• Mantle

• Crust

• Inner core

• Outer core

Which of Earth's layers is defined as thin & brittle?

• Crust

• Mantle

• Inner core

• Outer core