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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 best describes how ice cores are important to the study of geologic history?

• They show unconformities, which signal changes in deposition.

• They hold index fossils, which are used to date the different ice cores.

• They contain evidence showing changes in the atmospheric composition over time.

• They follow the Law of Superposition, which gives reasons for extinctions of species.

Tags

NGSS.HS-ESS2-6

NGSS.HS-ESS3-5

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 plants

• Dinosaurs were eaten by the mammals.

• Dinosaurs lived on Earth before the mammals.

• Dinosaurs and mammals lived at the same time.

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NGSS.MS-LS4-1

The relative age of fossils is determined from their position in sedimentary rock. Which fossil is the youngest?

• Fossil 1

• Fossil 2

• Fossil 3

• Fossil 4

Tags

NGSS.MS-ESS1-4

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

What do earthquakes tell scientists about the history of the planet?

• Earth’s climate is constantly changing

• The continents of Earth are continually moving

• Dinosaurs became extinct about 65 million years ago.

• The oceans are much deeper today than millions years ago.

Tags

NGSS.MS-ESS2-3

NGSS.MS-ESS3-2

How do scientists know that some mountains were once at the bottom of an ocean?

• Freshwater rivers flow to the ocean.

• Saltwater fish are found in some mountain streams.

• Dinosaur bones have been discovered in the mountains.

• Marine fossils have been found on the peaks of some mountains.

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

An index fossil is found in the same sedimentary layer as another fossil. What would this reveal about the other fossil?

• The relative age of the fossil.

• That the two fossils are from the same species

• The fossil is older than the index fossil.

• The fossil is younger than the index fossil.

Tags

NGSS.MS-ESS1-4