Geologic Time

Trilobites can be found in both rocky places and marine areas on Earth, even though they are marine animals. How can we use trilobites fossils to show that changes have occurred over time?

• Trilobite fossils are in both rocky and marine areas proving that Earth has changed by natural processes.

• Trilobites actually show that nothing ever changes

• Natural processes no longer occur so trilobites show nothing

• Trilobites are compressed so much by natural processes that they only show in marine places

Tags

NGSS.MS-ESS2-3

NGSS.MS-LS4-1

Where would law of superposition be more useful than radioactive dating?

• used to tell which hill peak is the nearest

• used to tell the exact age of your family

• used to tell which layer of sedimentary rock in the grand canyon is the oldest

• used to tell whether two animals that lived in different continents are related

Tags

NGSS.MS-ESS1-4

Scientists have discovered a dinosaur bone in Russia. They decided to use radioactive dating on the surrounding igneous rock to determine exact age. Why would they use this technique?

• It is easier and cheaper than other techniques

• It is the only technique that can tell you where the sample was

• It is the only technique that can give an approximate age.

  Law of superposition only tells part of the story

• It is the only technique used to compare fossils to plate boundary events

Tags

NGSS.MS-ESS1-4

Look at the reference image. How can we use this image to show that Earth changed over time.

• All the dinosaurs had the same DNA

• None of the dinosaurs ever moved from their main country

• Fossils of the same type of organism can be found on continents that are not connected, showing that all continents were once together.

• Life... uhhh... finds a way...

Tags

NGSS.MS-ESS2-3

A cave explorer found a bunch of Megalodon sharks teeth in a cave in the middle of the Arizona Desert. What best explains why he would discover shark fossils here?

• Megalodons would hunt their prey on the surface as well the ocean

• Megalodons were known to fly

• Millions of years ago Arizona was under water. Over time the Earth changed, the ocean became a desert, and the shark's teeth were fossilized.

• Megalodons love Arizona, and go there to retire

Tags

NGSS.MS-ESS1-4

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

NGSS.MS-LS4-1

How old do Paleontologists believe the Earth is?

• 2019 years old

• 3.6 billion years old

• 4.6 billion years old

• 4.6 million years old

Tags

NGSS.MS-ESS1-4

Scientists chose where units of geologic time began and ended based on the appearance or disappearance of life.

• true

• false

Tags

NGSS.MS-ESS1-4

NGSS.MS-LS4-1

What are the names of ALL parts of the geologic time scale in correct order from broadest to narrowest?

• era, period, eon

• eon, era, period, epoch

• era, eon, epoch, period

• eon, era, epoch, period

Tags

NGSS.MS-ESS1-4

By which method have scientists determined that the Earth is about 4.5 billion years old?

• plate tectonics

• relative dating

• radioactive dating

• law of superposition

Tags

NGSS.HS-ESS1-6

What type of event usually marks the end of an Era

• A Mass Extinction

• A Quinceanera

• An earthquake

• A Volcanic Eruption

Tags

NGSS.MS-ESS1-4