Unit 3: Earth's Interior

Which statement correctly explains how the inner and outer core differ, and what produces the magnetic field? SC.7.E.6.1

• The outer core is closer to Earth’s crust, so it creates the magnetic field.

• The outer core is liquid, and its movement causes the formation of a magnetic field. The inner core is solid.

• The outer core is made from iron, which causes the magnetic field, but the inner core is nickel.

• The outer core has a greater volume than the inner core, and this produces the magnetic field

What are the four layers of Earth in order, starting with its outer surface and going toward its center? SC.7.E.6.1

• crust, mantle, middle core, inner core

• crust, mantle, outer core, inner core

• inner core, outer core, mantle, crust

• mantle, crust, outer core, inner core

Earth is divided into compositional layers based on chemical composition. Which compositional layer is a hot, convecting layer of rock? SC.7.E.6.1

• core

• crust

• mantle

• plate

The lithosphere is broken into pieces called _________________. SC.7.E.6.1

• atolls

• strata

• plates

• trenches

The lithosphere is one of Earth’s layers. Which compositional layers are included in the lithosphere? SC.7.E.6.1

• core and crust

• mantle and core

• crust and mantle

• core and mesosphere

Which compositional layer of Earth can you claim is the thinnest? SC.7.E.6.1

• the inner core

• the outer core

• the crust

• the mantle

What is the source of energy that drives Earth’s plate tectonics, earthquakes, and volcanic eruptions? SC.6.E.7.1

• Tidal energy from the Earth’s oceans

• Heat energy from Earth’s molten layers.

• Magnetic energy from Earth’s magnetic field.

• Light energy from the Sun that reaches the earth.

Earth has three main compositional layers. Which answer describes the mantle? SC.7.E.6.1

• the thin and solid outermost layer

• the innermost layer of iron and nickel

• the hot layer of rock between the crust and the core

• the liquid layer that encloses a solid ball of iron and nickel

Volcanic islands can form over hot spots. What process causes the hot, solid rock to rise through the mantle at these hot spots? SC.7.E.6.1

A.

B.

C.

D.

• condensation

• conduction

• convection

• radiation

Scientists and researchers have noticed that the energy waves from earthquakes change speed as the waves move from the upper mantle of the Earth to its crust. Which of the following conclusions about the different layers of Earth does this observation best support? SC.6.E.7.1

• The upper mantle and the crust have different ages.

• The upper mantle and the crust have different masses.

• The upper mantle and the crust have different densities.

• The upper mantle and the crust have different suns.