Plate Boundaries

How are you doing today?

• Great!
• I'm okay.
• Tired
• Grumpy
• Can we talk?

Earth’s outer core is best inferred to be

• A) liquid, with an average density of approximately 4 g/cm3
• B) liquid, with an average density of approximately 11 g/cm3
• C) solid, with an average density of approximately 4 g/cm3
• D) solid, with an average density of approximately 11 g/cm3

The interior of Earth between a depth of 5200 kilometers and 6300 kilometers is inferred to be composed mostly of

• A) silicon and iron
• B) silicon and oxygen
• C) iron and lead
• D) iron and nickel

Describe the direction the plates are moving

• toward each other
• away from each other
• sliding past each other

Describe what happens in 1000 years

Describe what happens in 1 million years

Describe what happens in 20 million years

Describe the direction the plates are moving

• toward each other
• away from each other
• sliding past each other

Describe what happens in 1000 years

Describe what happens in 1 million years