History of Life on Earth Science Fusion

The calculation of the age of an object by measuring the proportions of the radioactive isotopes of certain elements is 

• relative dating
• radiometric dating
• uranium dating
• isometric dating

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NGSS.HS-PS1-8

A radioisotope's _________________ is the time it takes for one half of the mass of the radioisotope to change into another substance.

• half-twist
• day-life
• half-life
• change over

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NGSS.HS-PS1-8

The oldest known fossils of multicellular organisms were found in rocks older than the 

• Cambrian period
• Precambrian period
• Hadeon Era

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NGSS.MS-LS4-1

NGSS.MS-ESS1-4

How long ago did the dinosaurs become extinct?

• a century ago

• 60 mya

• Dinosaurs became extinct 65 mya.

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NGSS.MS-LS4-1

is this statement TRUE OR FALSE:

"The Earth was struck by an asteroid from outer space (at the Yucatan Peninsula off Mexico). This caused massive fires, earthquakes and tsunamis, as well as dust clouds that blocked the sun, so photosynthesis was severely reduced and global climate changed. Few animals survived, and these diversified to fill the vacant niches and multiplied to repopulate the earth. The mammals and flowering plants became the dominant life forms after the last mass extinction. "

• TRUE

• FALSE

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NGSS.MS-LS4-1

NGSS.MS-LS4-2

NGSS.MS-ESS2-2

HOW OLD IS THE EARTH WE LIVE IN?

• 4,6 billion years old

• 2000 YEARS OLD

• 5 BILLION YEARS OLD

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NGSS.MS-ESS1-4

Relative Dating is:

• Uses the radioactive material in rocks to determine when rocks were formed or the age of the rock. The radioactive elements in rocks decay slowly over time – known as radioactive decay.

• Looks at the comparative depths of fossils in rock to ascertain which are oldest and which are most recent.

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NGSS.MS-LS4-1

NGSS.MS-ESS1-4

which fossil is this?

• ammonite fossil

• trilobite

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NGSS.MS-LS4-1

NGSS.MS-LS4-2

We are in the crisis of the sixth mass extinction large amounts of valuable oxygen and release smoke and carbon dioxide resulting in global warming and climate change; illegal hunting and habitat destruction. who is the cause?

• pollution

• climate

• animals

• humans

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NGSS.MS-ESS3-4

What provides evidence about the history of life on Earth, and shows how organisms change through time?

• fossil record

• index fossil

• geologic time scale

• half-life

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NGSS.MS-LS4-1

NGSS.MS-LS4-2