Fossils

Question 1

Fossils

Answer 1

preserved remains or traces of living things, formed when living things die, buried by sediments.

Question 2

Fossilization is common, T or F?

Answer 2

false

Question 3

paleontologist

Answer 3

scientists who study, collect and classify fossils

Question 4

Fossilization

Answer 4

processes that produce fossils.

Question 5

Impression Fossil

Answer 5

contain prints, or impressions, of plants or animals from long ago

Question 6

Mold

Answer 6

hollow area in the sediment, shows the shape of an organism or a part. Impression Fossil

Question 7

Cast

Answer 7

solid 3D copy of the shape of an organism. Impression Fossil

Question 8

Replacement Fossil

Answer 8

replicas of things that were once alive, such as trees or sea creatures.

Question 9

Petrified Fossil

Answer 9

fossils in which minerals replace all/part of an organism. plant or animal- (permineralization). Replacement fossils.

Question 10

Trace Fossil

Answer 10

provide evidence of the activities of ancient organisms animals behavior/what they ate.

Question 11

Carbon Film

Answer 11

extremely thin coating of carbon on rock left after the organisms has decayed away. Trace fossils

Question 12

True Form Fossils

Answer 12

Some processes preserve the remains of organisms with little/no change (become trapped in tar, ice or amber).

Question 13

Fossil Record

Answer 13

Information gathered by paleontologists

Question 14

What are the things fossil record provide evidence of?

Answer 14

history of life on Earth
groups of organisms changing over long periods of time
Earth’s past climate
past environments and changes in Earth’s surface

Question 15

The fossil record provides evidence to support the theory of evolution, what’s evolution?

Answer 15

gradual change in living things over long periods of time

Question 16

2 ways determining the age of a fossil by finding the age of the rock it was found in.

Answer 16

relative age

absolute age

Question 17

absolute age

Answer 17

number of years since the rock formed

Question 18

relative age

Answer 18

age compared with ages of other rocks

Question 19

Law of Superposition

Answer 19

in horizontal sedimentary rock layers
the oldest layer is at the bottom
higher layer is younger layer

Question 20

Index fossils

Answer 20

commonly found, widely distributed fossils that existed a short time

Question 21

What affects the relative age of rocks?

Answer 21

Intrusions and extrusions, faults, or unconformities .

Question 22

fault

Answer 22

break in Earth’s crust which is always younger than the rock it cuts through

Question 23

unconformity

Answer 23

gap in the geological record where some rock layers have been lost because of erosion

Question 24

Igneous-extrusion

Answer 24

Lava that hardens on the surface An extrusion is always younger than the rocks below it.

Question 25

Igneous-intrusion

Answer 25

Lava that cools and hardens below the surface .An intrusion is always younger than the rock layers that surround it.

Question 26

Cross-Cutting Principle

Answer 26

something cuts across a body of rock, that “something” is younger than the rock it cuts across.

Question 27

Absolute (Radioactive) Dating

Answer 27

They use radioactive minerals in rocks as geological clocks.

Question 28

Absolute Dating Pros:

Answer 28

It can teach us about the past.

Tell us the numerical age or range of fossil is if there’s any in the rock.

Question 29

Absolute Dating Cons:

Answer 29

Radioactive dating can only be used to date fossils older than approximately 50,000 years old.