end of year 8.p.2.1 and 8.p.2.2

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

The diagram shows a cross-section of several rock layers and geological features. Based on the diagram, which is true?

• Layer U is the oldest

• Layer Z is the youngest

• Layer T is older than layer S

• Layer X is older than layer y

Tags

NGSS.MS-ESS1-4

Scientists have identified four sedimentary rock layers from an archaeological dig as shown above. Which is most likely the oldest sedimentary rock layer?

• Layer R

• Layer S

• Layer T

• Layer U

Tags

NGSS.MS-ESS1-4

A scientist finds the bones of a dinosaur. What could help the scientist determine the approximate age of the dinosaur bones?

• the birds living in the area of the bones

• the weather conditions in the area of the bones

• the kinds of trees living in the area of the bones

• the index fossils in the area of the bones

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

Scientists find dinosaur fossils in the bottom rock layers of a cliff and mammal fossils in the middle rock layer of the cliff. Which could best be concluded from this evidence?

• Dinosaurs ate plantes

• Dinosaurs were eaten by the mammals

• Dinosaurs lived on Earth before the mammals

• Dinosaurs and mammals lived at the same time

Tags

NGSS.MS-LS4-1

Which method would be BEST for scientists to use to determine the absolute age of a Precambrian igneous rock?

• index fossils

• law of superposition

• radiometric dating

• law of original horizontality

In what type of rock would a geologist MOST likely find evidence of ancient life?

• sedimentary

• foliated

• metamorphic

• volcanic

Tags

NGSS.MS-LS4-1

The figure below shows a wall of the Grand Canyon. The most recent rocks of the Grand Canyon formed during which geologic period?

• Permian

• Devonian

• Cambrian

• Precambrian

Tags

NGSS.MS-ESS1-4

The graph shows possible changes to sea level over geologic time. What did scientists MOST likely study to construct this graph?

• molten magma

• extrusive igneous rock

• sedimentary layers

• foliated metamorphic rocks

Tags

NGSS.HS-ESS1-5

NGSS.HS-ESS2-2