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Geologic Time

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Final Jeopardy

Vocabulary100A trace or remains of a once-living thing from long ago.

What is a fossil?

Vocabulary200A fossil that is the actual body or body parts of an organism.

What are original remains?

Vocabulary 300

The age of an event or

object in relation to

other events or objects.

What is relative age?

Vocabulary400

The actual age in years

of an event or object.

What is absolute age?

Vocabulary500A fossil of an organism that was common, lived in many areas, and existed only during a certain span of time.

What is an index fossil?

Rock Layers100The numbered layers of rock in order from youngest to oldest in the diagram linked to this page.

What are layers 6, 5, 1, 4, 3, and 2?

Rock Layers200

Using the index fossil in layer 4, the age of fossil B.

What is between 144 and 206 million years old.

Rock Layers300This layer is the newest rock.

What is rock layer 6?

Rock Layers400The reason that there are no fossils in rock layer 1.

What is igneous rock that forms when molten rock solidifies. This molten rock destroys any trace of life with which it comes in contact. ?

Rock Layers500

The layer containing a fossil of an organism that existed between 144 and 90 million years ago.

What is layer 5?

More Vocabulary100A tubular sample that shows the layers of snow and ice that have built up over the year.

What is an ice core?

More Vocabulary200The length of time it takes for half of the atoms in a sample of a radioactive element to change from an unstable form into another form.

What is half-life?

More Vocabulary300A theory stating that processes shaping Earth today, such as erosion and deposition , also shaped Earth in the past, and that these processes cause large changes over geologic time..

What is a uniformitarianism?

More Vocabulary400A chart of Earth’s history, divided into intervals of time defined by major events or changes on Earth.

What is geologic time scale?

More Vocabulary500These appeared during Precambrian time.

What are the first organisms?

Geologic Time●100Carbon 14 has a half life of 5,730 years. What percent of it will have decayed in 11,460 years.

What is 75 percent?

Geologic Time●200

Carbon 14 has a half life of 5,730 years and is useful for dating objects between 100 and 70,000 years ago. It is most useful for dating organisms in this time period?

What is Quartenary period?

Geologic Time●

300The Devonian (417 to 354 mya) period occurred in this Era.

What is Paleozoic Era?

Geologic Time●

400Three substances in which original remains are preserved.

What are in amber, ice, and tar?

Geologic Time ●500The way scientists infer that Earth is more than 4 billion years old and is constantly changing.

What is by studying rocks and fossils?

Random facts.100What magma becomes when it cools.

What is solid rock?

Random Facts200Magma when it reaches the Earth’s surface.

What is lava?

Random Facts300Volcanoes are formed in the middle of the plate over these.

What are hot spots?

Random Facts400

The force that keeps us on the Earth.

What is gravity?

Random Facts500The first man to walk on the moon.

Who was Neil Armstrong?

Metric system100

The number of centimeters in

one meter.

What is 100 cm?

Metric system200Meters in one kilometer.

What is 1,000 m?

Metric system300Millimeters in one centimeter.

How much is 10 mm?

Metric system400

The number of centimeters to measure out 365 years where 1mm = 1 year.

What is 36.5 cm?

Metric system500Miles in a 10k road race

What is 6.2?

Final Jeopardy

How do index fossils tell the age of rocks?

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