Geologic Timescale Review

How old is Earth:

• 4.28 billion

• 428 million

• 4.56 billion

Tags

NGSS.MS-ESS1-4

Cross-cutting relationship says if one geologic feature cuts across another feature, the feature that it cuts across is:

• younger

• same age

• older

When an organism dies, it stops taking in C-14, so scientists measure the ratio of C-14 to C-12 to determine how much time has passed since the organism died:

• Radiocarbon dating

• relative age

• Uranium dating

What is the calendar that scientists use to outline Earth's History?

• The Geologic Timescale

• The Geologic Calendar

• The Timescale of Earth

• Earth's Historic Calendar

Tags

NGSS.MS-ESS1-4

The largest division of the geologic timescale is a(n) _______________.

• Period

• Decade

• Month

• Era

Tags

NGSS.MS-ESS1-4

What type of scientist uses fossils to reconstruct the history of life before humans existed?

• Zoologist

• Humanologist

• Paleontologist

• Biologist

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

What do fossils show us?

• They show us how life on Earth has changed over the years.

• They show us that life on Earth has not changed too much over time.

Tags

NGSS.MS-LS4-1

What occurs during the 2nd and 3rd stage of fossil formation?

• The organism dies and forms a cast.

• The organism is covered in sediment & decomposes.

• Organism decomposes, creates a mold and fills with sediment.

• Sediment covers the organism which causes it to die.

What method of dating do scientists use to estimate the age of fossils in rock layers?

• Absolute Dating

• Relative Dating

Where are the oldest layers of fossils found in sedimentary rock?

• The top layer.

• The middle layer.

• The bottom layer.

• They are all old, so the layer doesn't matter.

Tags

NGSS.MS-ESS1-4