Earth's Evolution Over Time

Fossils of the same plants and animals are found on continents that are on different sides of the Atlantic Ocean. Which of these statements does this observation support?

• These animals and plants crossed the Atlantic Ocean

• The Atlantic Ocean was once a large body of freshwater

• The continents that are now on opposite sides of the Atlantic Ocean once formed a single landmass.

• The continents that are now on opposites sides of the Atlantic Ocean have the same kinds of animals and plants today.

Tags

NGSS.MS-ESS2-3

NGSS.MS-LS4-1

The picture shows the rock layers in one part of the Grand Canyon. What is the order of rock layers, from oldest to youngest?

• 1, 2, 3, 4

• 2, 1, 4, 3

• 3, 4, 1, 2

• 4, 3, 2, 1

Tags

NGSS.MS-ESS1-4

Which statement is true according to the law of superposition?

• Young fossils replace old fossils

• Oldest fossils are in the top rock layers

• Oldest fossils are in the the bottom rock layers

• Youngest fossils are in the bottom rock layers

Tags

NGSS.MS-ESS1-4

Which letter represents the youngest layer of rock?

• layer 1

• layer 2

• layer 3

• layer 4

Tags

NGSS.MS-ESS1-4

Which is the BEST conclusion that can be made from comparing the diagrams?

• Elephant species have changed over time.

• Ancient elephants were better adapted than modern elephants

• Elephant habitats have remained the same over time.

• Elephant fossil evidence is widespread and complete

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

A scientist drew some diagrams of ancestors of elephants based on fossil evidence.

Which is the BEST conclusion that can be made from comparing the diagrams?

• Elephant species have changed over time.

• Ancient elephants were better adapted than modern elephants

• Elephant habitats have remained the same over time.

• Elephant fossil evidence is widespread and complete

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

A rock formation near Gainesville, Florida, was formed 530 million years ago. Which information does a scientist need to most accurately determine the age of a rock?

• the percentage of mineral that makes up the rock

• the percentage of fossilized marine life that makes up the rock

• the amount of each radioactive element present in the rock

• the amount of weathering present on the surface of the rock

Tags

NGSS.HS-ESS1-5

A team of geologists compared the rock layers found in Florida to those found in northwest Africa. They placed all of the rock layers from the two regions in order from youngest to oldest. What did the team make?

• a fossil reference

• a geological column

• a geological record

• a topographic map

Tags

NGSS.MS-ESS1-4

Fossils can be used to determine the relative ages of rock layers. Where will fossils of a more recent organism be located in undisturbed rock layers?

• the deepest layer

• always above the ground

• above rock containing fossils of older organisms

• below rock containing fossils of older organisms

Tags

NGSS.MS-ESS1-4

Which method do scientists use to find the relative ages of rock samples?

• law of superposition

• law of relative ages

• radioactive dating

• carbon 14 dating

Tags

NGSS.MS-ESS1-4