25.3 - Earth's Interior (15pts.)

A seismic wave boundary marking an abrupt change in rock density is __.

• Divergent boundary

• Convergent boundary

• Transform boundary

• Discontinuity

Answer explanation

A seismic wave boundary marking an abrupt change in rock density is referred to as a discontinuity.

Tags

HS-ESS2-3

HS-ESS1-5

The __ is a plastic-like layer upon which Earth's lithospheric plates move.

• asthenosphere

• lower mantle

• lithosphere

• outer core

Answer explanation

The asthenosphere is a plastic-like layer upon which Earth's lithospheric plates move, making it the correct choice.

Tags

HS-ESS2-3

A __ zone is a "dead zone" between 105 and 140 degrees from an earthquake's epicenter, where nothing is recorded on a seismograph.

• wave

• seismic

• shadow

• dark

Answer explanation

The correct choice is 'shadow' because a shadow zone is a 'dead zone' where no seismic waves are recorded between 105 and 140 degrees from an earthquake's epicenter.

Tags

HS-ESS2-3

HS-ESS1-5

HS-ESS2-1

Why do scientists speculate the inner core is composed of iron and nickel?

• The densest materials settled toward the core.

• Iron and Nickel are the most abundant elements on the Earth.

• It is impossible to speculate the core's composition.

• Iron and Nickel are only stable under high temperature pressure environments.

Answer explanation

The densest materials settled toward the core.

Tags

HS-ESS2-3

The outer core of Earth is __.

• silicate

• gaseous

• solid

• liquid

Answer explanation

The outer core of Earth is liquid, not solid, gaseous, or silicate. It is composed mainly of iron and nickel in a liquid state.

Tags

HS-ESS2-3

HS-ESS1-5

Which occurs when a change in speed causes a wave

to bend and change direction?

• Reflection

• Referendum

• Refraction

• Reformation

Answer explanation

Refraction occurs when a change in speed causes a wave to bend and change direction.

Tags

NGSS.MS-PS4-2

According to the Image, which layer is directly on top of the Asthenosphere?

• Upper Mantle

• Lithosphere

• Oceanic Crust

• Inner Core

Answer explanation

The layer directly on top of the Asthenosphere is the Lithosphere, as shown in the image.

Reorder the following from OUTERMOST (Left) to INNERMOST (Right)

• Asthenosphere

• Crust

• Lower Mantle

• Lithosphere

• Outer Core

Click on the 1. NAME and 2. PICTURE of Earth that is solid metal. [click on 1 word and 1 picture]

Tags

NGSS.MS-ESS3-1

True or False: Earthquakes can help scientists understand Earth's Interior

• True

• False

Answer explanation

Earthquakes generate seismic waves that travel through Earth's interior, allowing scientists to study the composition and structure of the planet. Therefore, earthquakes can help scientists understand Earth's Interior.