2.2 Layers of Earth Review

What are the 2 sources of Earth's interior energy?

(Select the 2 correct options)

• Energy from collisions when the early Earth accreted material.

• Energy released from the radioactive decay of Uranium and other radioactive elements inside the Earth.

• Energy sent to the Earth from Solar Wind.

• Energy generated from seismic waves that travel through the Earth.

What occurred when the Earth underwent "differentiation"?

• Because the Earth was in a molten state, the denser materials were able to sink to the core while lighter material rose to the surface.

• The Earth began to undergo nuclear fusion at its core due to the immense pressures.

• The Earth transformed from a planetesimal to a protoplanet. This is a process of becoming different.

Tags

NGSS.MS-ESS2-1

Scientist will classify the Earth into layers based on different properties or characteristics.

What is a "CHEMICAL PROPERTY"?

• This refers to the composition or the various elements and rock types of the Earth.

• This refers to the state of matter of Earth material.

• This refers to the density of Earth material.

• This refers to the Earth material's ability to flow or to deform

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

Scientists will classify the Earth into layers based on different properties or characteristics.

Which of the following is NOT a "PHYSICAL PROPERTY"? (physical properties are often referred to as mechanical properties)

***3 options are physical properties and 1 option is not

• State of Matter (liquid, solid, plastic) of the Earth material

• Density of the Earth material

• The ability to flow or deform of the Earth material

• The chemical composition (elements) of the Earth material

Tags

NGSS.MS-PS1-2

2 different types of classification or layers of the Earth are shown in the diagram.

Which shows the CHEMICAL layers of the Earth?

• Diagram on the left (crust, mantle, core)

• Diagram on the right (lithosphere, asthenosphere, mesophere, outer core, inner core)

2 different types of classification or layers of the Earth are shown in the diagram.

Which shows the PHYSICAL (mechanical) layers of the Earth?

• Diagram on the left (crust, mantle, core)

• Diagram on the right (lithosphere, asthenosphere, mesophere, outer core, inner core)

  Mesosphere is the lower mantle.

What is the approximate thickness of the entire mantle?

• 2900 km

• 2200 km

• 700 km

• 1220 km

Which layers are either liquid or putty like? (in other words.....Which layers are NOT solid?)

• Inner core, outer core, lower mantle

• asthenosphere, outer core

• lithosphere, lower mantle, inner core

• ONLY the outer core

What is most significant about the OUTER CORE being liquid iron & nickel?

• Since it is liquid, it can flow and create convection currents which generates the Earth's magnetic field.

• Since it is liquid, it can transfer heat energy towards the inner core.

• Since it is liquid, it can flow upward into the mantle and cause mantle convection.

Tags

NGSS.MS-ESS2-1

What is a major difference between the Upper Mantle and the Lower Mantle?

• Upper Mantle is not solid but more putty like.

  Lower Mantle is more solid.

• Upper Mantle is made of silicate rocks

  Lower Mantle is made of iron and nickel.

• Upper Mantle is part of the Crust

  Lower Mantle is part of the Mantle.