Earth System History

Question 1

What are the three components of Earth’s system History?

Answer 1

physical, chemical, biological

Question 2

what is a system?

Answer 2

group of related elements that function together as a whole

Question 3

what is a component

Question 4

What is a physical component

Answer 4

tangible component of something

Question 5

What is matter?

Answer 5

anything made up of atoms occupies space and has mass

Question 6

What is chemical component?

Answer 6

identity, arrangement, ratio of elements making up a compound

Question 7

What is a biological component?

Answer 7

living components

Question 8

what is uniformitarianism?

Answer 8

the laws of nature have not changed over time

Question 9

What is the principle of superstition?

Answer 9

oldest rocks and fossils ae at the bottom, new ones are on top

Question 10

What is a strata?

Answer 10

layer of rock

Question 11

what happens when there are no fossils in strata?

Answer 11

There was a mass extinction

Question 12

when do gene pools change?

Answer 12

population shrinks, non-random mating, mutations in genes, movement in/ out of population, natural selection

Question 13

why do populations shrink?

Answer 13

diseases, extinctions, introduction of better species, predators

Question 14

what is non-random mating?

Answer 14

organisms choose strongest mate

Question 15

why are there mutations in genes?

Answer 15

genes change, environment decides

Question 16

What is Movement in/out of population?

Answer 16

immigration, geneflow

Question 17

what is natural selection?

Answer 17

adaptations to the environment, ones that do good take over ones who do bad

Question 18

how old is the universe

Answer 18

13.7 billion

Question 19

what is the most widely accepted theory for the origin of the universe

Answer 19

The Big Bang Theory

Question 20

What is recombination?

Answer 20

sub-atomic particles come together

Question 21

what is inflation?

Answer 21

rapid expansion

Question 22

what are the 4 eons

Answer 22

hadeon, archeon, Proterozoic, phanerozoic

Question 23

What are the 3 eras?

Answer 23

Paleozoic, Mesozoic, Cenozoic

Question 24

what are three eons in the Precambrian

Answer 24

Hadean, Archean, Proterozoic

Question 25

how much does the Precambrian account for Earth’s history

Answer 25

87%

Question 26

what is the Hadean Eon characterized by?

Answer 26

Earth’s initial formation from gases and dust, and planetesimals, and by the stabilization of Earth’s core, development of the atmosphere and Oceans

Question 28

What do meteorites do for the Earth when they bombard with it

Answer 28

the Earth increases in size, also bringing water and amino acids