Geological Time Scale

Which fossil is the youngest?

• fossil A

• fossil B

• fossil C

• fossils A and B are the same age

What is the importance of studying fossils?

• to provide information about how current life forms would exist in previous environmental conditions

• to provide information about how life and environmental conditions may have changed

• to provide information about how previous life forms would exist in current environmental conditions

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

Scientists frequently use all of the following to support the theory that organisms change over time except

• similarities in number of mates.

• similarities in body structure

• similarities in early development.

• . similarities in DNA.

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-3

Claire would like to show that fossils provide evidence of how old Earth is. She knows that the fossil record can be used to deduce geologic time scales and present a record of Earth’s history. Which fossils match the Precambrian time period^?

• flowers and dinosaurs

• bacteria and primitive marine plants

• coral reefs and amphibians

• dinosaurs and humans

London is studying the geological time scale. Which era would London find Humans in?

• Precambrian

• Cenozoic

• Paleozoic

• Mesozoic

Tags

NGSS.MS-ESS1-4

NGSS.MS-LS4-1

Ramiro is studying the Mesozoic era. Which two living things would he find in this era?

• flowers

• amphibians

• dinosaurs

• coral reef

• humans

Tags

NGSS.MS-LS4-1

Over millions of years, animals have evolved in shape and size. The nautiloid is one of those animals. Which of the following is a descendant of the nautiloid found during the Cambrian period?

• bryozoans

• nautilus

• trilobites

• arthropods

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

Scientists have found large groups of fossils of marine organisms on mountaintops. What does this tell scientists about the past?

• That these rocks must have been moved there by some one else.

• That these rocks were always above the surface of an ocean

• That these organisms left the ocean and climbed to the top of an inland mountain to die

• That these rocks were once below the surface of an ocean

Tags

NGSS.MS-ESS1-4

NGSS.MS-ESS2-3

NGSS.MS-LS4-1

Fossils provide evidence of __________.

• how life and the environment has remained stable over time

• how the climate and weather has remained stable over time

• how life and the environmental conditions have changed over time

• how aliens have visited earth in the past

Scientists can estimate the ages of rock if they contain certain __________.

• carbons

• sediments

• index fossils

• minerals

Tags

NGSS.MS-ESS1-4

NGSS.MS-ESS2-3