Layers of the Earth and Rock Cycle

Which layer is shown in dark orange?

• crust

• mantle

• outer core

• inner core

Which layer is made (mostly) of SOLID iron and nickel?

• crust

• mantle

• outer core

• inner core

Which layer of the Earth is the THINNEST?

• crust

• mantle

• outer core

• inner core

A(n) _______ rock is created at B.

Which is a process that allows scientists to compare rock layers with others in a sequence to determine their age?

• radiometric dating

• absolute dating

• relative dating

Tags

NGSS.MS-ESS1-4

What are rock strata?

• Rock strata are layers of volcanic ash that solidify quickly.

• Rock strata are layers of ice formed due to extreme cold temperatures.

• Rock strata are layers of metal deposits found deep underground.

• Rock strata are layers of rock that are formed over time due to sedimentation, compaction, and cementation.

Tags

NGSS.MS-ESS1-4

What are rocks that are brought to earth’s surface from the mantle called?

• obsidians

• felsoliths

• xenoliths

Tags

NGSS.MS-ESS2-1

Which layer of the Earth consists of magma?

Answer explanation

The Mantle is the thickest layer of the Earth and consists of molten rock or MAGMA

What are rocks that are brought to earth’s surface from the mantle called?

• obsidians

• felsoliths

• xenoliths

Which statement best describes the Law of Superposition?

• Each sedimentary layer of rock represents 1,000 years of Earth’s age, much like the rings of a tree.

• In undisturbed layers of sedimentary rock, the upper rock layers are older than the lower rock layers.

• In undisturbed layers of sedimentary rock, the lowest layers contain the older rocks.

• Rocks that form near volcanoes are older than surrounding rock.

Tags

NGSS.MS-ESS1-4