Geologic Time Scale

Which of the following is a record of Earth's history from its origin 4.6 billion years ago (bya) to the present?

• radioactive decay

• geologic time scale

• absolute-age dating

• relative-age dating

Tags

NGSS.MS-ESS1-4

Why fish is more likely to become fossilized than a snake?

• Fish is a cold-blooded animals.

• Fish is a member of the most diverse group of vertebrates, or animals with backbones.

• Fish has hard parts such as bones and teeth that are easily preserved than soft tissues.

• Fish can survive in water.

relative age

• the age of rocks and geologic features compared with other rocks and features nearby
• Distinctive fossil used to compare the relative ages of fossils. They were on the Earth for a short period of time.
• The actual age in years of an event or object

Tags

NGSS.MS-ESS1-4

The Earth is _____________________ years old.

• 4.6 million

• 4.6 billion

• 4.6 trillion

• 4.6 zillion

Tags

NGSS.MS-ESS1-4

Which period are we currently in?

• Quaternary
• Holocene
• Jurassic
• Tertiary

Tags

NGSS.MS-ESS1-4

What two methods are used to divide and classify the geological time scale?

• Living organisms

• rock strata or layers

• DNA

• fossils

Tags

NGSS.MS-ESS1-4

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

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-4

What do scientists base the divisions of geologic time on?

• They are based on equal segments of time.

• They are based on the type of rocks being created.

• They are based on major changes in the fossil and rock record.

• The are based solely on human activity.

Tags

NGSS.MS-ESS1-4

Rock that is made from sediments that have been pressed together are called

• igneous rocks

• sedimentary rocks

• metamorphic rocks

• granite

The end of an era, and the end of life for groups of organisms, is called?

• Death

• Mass extinction

• Transition

• Turning point

Tags

NGSS.MS-LS4-1