Science Chapter8

Question 1

What are fossils?

Answer 1

The preserved remains or traces of an organism that lived in the past

Question 2

What is a mold?

Answer 2

A mold is an imprint

Question 3

Cast fossil

Answer 3

A type of fossil formed when a mold, created by the impression or cavity left by a decaying organism, is filled with sediment or other material, resulting in a replica of the original organism.

Question 4

Petrified Fossil definition

Answer 4

Stone fossils that hardens mineral to rock

Question 5

Carbon film fossil

Answer 5

Refers to a type of fossil preservation where the organic material of an organism leaves behind a thin layer of carbon residue.

Question 6

What is a trace fossil?

Answer 6

A type of fossil that preserves evidence of ancient organism behavior or activity rather than the physical remains of the organism itself.

Question 7

Preserved remains?

Answer 7

Also known as body fossils, are the physical remains or traces of ancient organisms that have been preserved in the fossil record.

Question 8

What is the fossil record, and why is it important?

Answer 8

The fossil record refers to the collection of fossils that have been discovered and studied by paleontologists, providing a record of life on earth spanning billions of years.

Question 9

List the three factors that impact natural selection and give a brief description of each factor:

Answer 9

Variation: Different Types
Competition: they have to fight to survive
Over production: too many of them
Selection: some variations make individuals better adapted to their environment. Those individuals were more likely to survive and reproduce and their offspring would inherit this helpful characteristic.

Question 10

Species

Answer 10

When a group of animals can reproduce and has their own unique traits.
Ex:Dogs,Wolves,Coyotes

Question 11

Adaptation

Answer 11

When an animal changes to bet used to.
Ex: Different bird beaks for their different types of food.

Question 12

Evolution

Answer 12

When an animal evolves or changes.
Ex: Monkey to Human

Question 13

Scientific theory

Answer 13

Organisms might be related
Ex: Charles Darwin

Question 14

Natural selection

Answer 14

Whatever nature does happens.
Ex: Animals in the wild

Question 15

Artificial Selection

Answer 15

When somebody decides what to breed
Ex: Chicken for Big Chicken breast

Question 16

Who introduced the theory of evolution?

Answer 16

Charles Darwin

Question 17

What Islands had the species that provided evidence for evolution?What species were important?

Answer 17

The Galápagos Islands and its native birds.

Question 18

What’s the difference between Natural selection and Artificial selection?

Answer 18

One is nature the other is a force.

Question 19

How are natural selection and evolution related?

Answer 19

They have change and grow over time.

Question 20

What does the fossil record tell us about evolution?

Answer 20

They show how animals are different and have changed over time.

Question 21

What do embryos tell us about evolution?

Answer 21

They all have tiny slits on their throat and have tails which suggest a common ancestor.

Question 22

Define homologous structures what do they tell us?

Answer 22

That are and have similar body structures.

Question 23

How does DNA support evolution?

Answer 23

They have similar traits and body structures which means they had a common ancestor.

Question 24

How and when does a new species form?

Answer 24

When a group gets separated and evolves and h different traits a new species forms when it has different traits.

Question 25

Gradualism

Answer 25

Small changes

Question 26

Punctuated equilibrium

Answer 26

Change over a short period of time.