Exploring the Layers of the Earth

What is the main challenge in studying the deeper layers of the Earth?

• High temperatures

• Lack of technology

• Inaccessibility

• Lack of interest

Which method is NOT used to infer the composition of Earth's layers?

• Examination of volcanic material

• Analysis of meteorites

• Observations from space

• Study of seismic waves

What are the two types of crust that make up the lithosphere?

• Oceanic and Continental

• Upper and Lower

• Inner and Outer

• Rigid and Plastic

Tags

NGSS.MS-ESS2-3

What is the boundary between the crust and the rigid mantle called?

• Lithosphere

• Asthenosphere

• Moho

• Stiffer Mantle

Which layer of the mantle is described as 'plastic-like'?

• Stiffer Mantle

• Outer Core

• Asthenosphere

• Rigid Mantle

What process occurs in the asthenosphere that is crucial for plate tectonics?

• Diffusion

• Convection

• Radiation

• Conduction

Tags

NGSS.HS-ESS2-1

NGSS.HS-ESS2-3

What percentage of Earth's volume is made up by the stiffer mantle?

• 80%

• 60%

• 50%

• 70%

Why do scientists believe the outer core is liquid?

• It is less dense than the mantle

• It is hotter than the inner core

• S-waves cannot pass through it

• It contains more iron and nickel

What is the primary composition of the inner core?

• Solid iron and nickel

• Liquid iron and nickel

• Solid silicon and oxygen

• Liquid silicon and oxygen

Tags

NGSS.MS-PS1-1

As you go deeper into the Earth, which of the following increases?

• Density

• Pressure

• Temperature

• All of the above

Tags

NGSS.HS-ESS2-3