Earth's Interior & Seismic Waves

Which layer of earth is molten (liquid metal)?

• inner core

• outer core

• crust

• lithosphere

Which layers make up the mantle?

• Lithosphere and asthenosphere

• mesosphere, asthenosphere, part of lithosphere
• Lithosphere and mesosphere

• asthenosphere and mesosphere

Which layer is plastic and has the consistency of silly putty allowing movement?

• asthenosphere
• lithosphere
• mesosphere
• crust

Which layer of Earth is the hottest and has the most pressure?

• crust 
• mantle
• outer core
• inner core

Which of Earth's layers is made of SOLID iron and nickel?

• crust 
• mantle
• outer core
• inner core

How are the materials of the Earths core different from those of the crust (in general)?

• They are harder

• They are more dense

• They are older

• They are darker in color

Which area of the Earth is least dense ?

• Outer core

• inner core

• mantle

• crust

What is the thinnest layer of the Earth?

• Mantle

• inner core

• outer core

• crust

Which materials make up the Earth's core?

• nickel and cobalt

• iron and cobalt

• nickel and iron

How do scientists know the Earth has layers?

• Seismic waves

• Drilling into the mantle

• Seismic waves data and rock samples

• The Earth has layers?