Exploring the Earth's Layers: Part 2

What is the focus of the second half of the Earth's layers video?

• Chemical composition of Earth's layers

• Mechanical layers of the Earth

• Biological layers of the Earth

• Atmospheric layers of the Earth

Which layer is considered the outermost in terms of mechanical layers?

• Core

• Lithosphere

• Mantle

• Crust

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

• Oceanic and Continental

• Upper and Lower

• Inner and Outer

• Rigid and Plastic

What is the lithosphere synonymous with?

• Mesosphere

• Tectonic plates

• Asthenosphere

• Outer core

How is the asthenosphere described in terms of its physical properties?

• Solid and brittle

• Plastic-like and malleable

• Liquid and flowing

• Rigid and strong

What is the best analogy to understand the asthenosphere's behavior?

• Flowing water

• Blown glass

• Molten lava

• Solid rock

What is the state of the outer core?

• Liquid

• Semi-solid

• Solid

• Gaseous

Tags

NGSS.HS-ESS2-3

What metals primarily make up the outer core?

• Aluminum and Magnesium

• Iron and Nickel

• Copper and Zinc

• Gold and Silver

Why is the inner core solid despite high temperatures?

• It is made of different materials

• It is not as hot as the outer core

• The pressure from other layers is too great

• It is cooled by the mantle

Tags

NGSS.HS-ESS2-3

What causes the metals in the inner core to be squeezed together?

• Magnetic fields

• Low temperatures

• Chemical reactions

• High pressure from surrounding layers