Evidence of Earth's Past Review

Examples of imprint fossils made by geologic compression are...

• frozen remains of elephant-like mammoths

• drawings on rocks made by prehistoric humans

• fossil leaves

• footprints and animal tracks

Tags

NGSS.MS-LS4-1

The body of an animal is more likely to become fossilized if it...

• is left on the surface of the ground

• is quickly buried by sediment

• does NOT contain bones or other hard body parts like shells

• All of these Options

On the geologic time scale...

• the names and time units come from locations where the representative rock layers are found

• each division is the same number of millenia

• the oldest ages are most finely divided

• the oldest ages are at the top, and the youngest ages are at the bottom

Tags

NGSS.MS-ESS1-4

To understand Earth history, you need to know that...

• time flies like arrows

• the present is the key to the past

• natural laws are not always set

• the geologic time scale is equally detailed over all time periods

Tags

NGSS.MS-ESS1-4

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

A good index fossil...

• existed over a long period of time

• is distinctive

• is only found in a specific area

• All of these choices

Tags

NGSS.MS-LS4-1

Most of the mammal fossil record consists of...

• teeth

• shells

• footprints

• bones

Tags

NGSS.MS-LS4-1

The law of superposition states that in a section of rock layers...

• the younger rocks are found at the bottom and the older rocks are found at the top

• the older rocks are found at the bottom and the younger rocks are found at the top

• a rock that cuts across another rock must be younger than the rock it cuts across

• None of these choices

Tags

NGSS.MS-ESS1-4

The half-life of a radioactive element is...

• the time it takes for half of the number of parent isotope atoms to decay into daughter isotope atoms

• half the weight of the original radioactive element

• half the estimated age of the Earth's crust

• None of these choices

Tags

NGSS.MS-ESS1-4

The best materials that are good for radiometric dating are...

• sedimentary rocks

• index fossils

• igneous rocks

• any rock

True or False: Lord Kelvin's age of the Earth was underestimated because radioactivity had not yet been discovered when he made is calculations.

• True

• False

Tags

NGSS.HS-PS1-8