History Of Life

Question 0

Approximate time it took the earth to cool and form a solid crust?

Answer 0

500 million years

Question 1

Approximate age of the earth?

Answer 1

4.6 billion years

Question 2

When first microbial fossil evidence emerged?

Answer 2

3.5 billion years

Question 3

Force that pulled earth into a spherical shape when it was still molten?

Answer 3

Gravity

Question 4

Elements pulled to the center of core of the earth? (Heavy/light)

Answer 4

Heavier

Question 5

Elements stayed near the crust or surface of the earth? (Heavy/light)

Answer 5

Lighter

Question 6

Earths early atmosphere was formed by?

Answer 6

Volcanic gases

Question 7

Earths early atmosphere had little to no free _____?

Answer 7

Oxygen

Question 8

Hypothesis describing how earths early environment formed biological material?

Answer 8

Primordial soup hypothesis

Question 9

First type of cells on earth?

Answer 9

Prokaryotic

Question 10

Responsible for creating the ozone and free oxygen?

Answer 10

Prokaryotic

Question 11

A geological record of earths history?

Answer 11

Geological time scale

Question 12

Eon?

Answer 12

Billion of years

Question 13

Era?

Answer 13

100’s of million of years

Question 14

Period?

Answer 14

10’s of millions of years

Question 15

Epoch?

Answer 15

Few years (1-9 million years)

Question 16

Mya?

Answer 16

Year

Question 17

Movement of several large plates that make up the surface of the earth?

Answer 17

Plate tectonics

Question 18

Movements of mantle which causes tectonics plates to move?

Answer 18

Convection

Question 19

Movement of plate tectonics causes what kind of changes which influences life?

Answer 19

Environmental

Question 20

The era during which the ancestors of most major animal group diversified?

Answer 20

Cambrian explosion

Question 21

Rock layer between the Cretaceous and Paleogene periods characterized by high levels of the element iridium and an abundance of dinosaurs fossils?

Answer 21

The K-T boundary

Question 22

Any preserved evidence of an organism?

Answer 22

Fossil

Question 23

Scientist who studies fossils?

Answer 23

Paleontologist

Question 24

Law that states younger rock layers are deposited on top of older rock layers?

Answer 24

The law of superposition

Question 25

Method used to determine the age of rocks by comparing them with other layers?

Answer 25

Relative dating

Question 26

Used decay of radioactive isotopes to measure the age of rock?

Answer 26

Radiometric dating

Question 27

Time it takes for half of an original isotope to decay?

Answer 27

Half-life

Question 28

Radioactive isotope used to date biological materials!

Answer 28

Carbon

Question 29

Types of fossils?

Answer 29

Feces
Petrified wood
Mold

Question 30

Idea that life arises from non life?

Answer 30

spontaneous generation

Question 31

Theory that only live things can produce other living things of the same kind?

Answer 31

Theory of biogenesis

Question 32

Redi? (Experiment)

Answer 32

spontaneous generation

Question 33

Pasteur? (Experiment)

Answer 33

Micro generation

Question 34

Miller & Urey (hypothesis)

Answer 34

Primordial soup hypothesis

Question 35

Oparin & Haldane (experiment)

Answer 35

Primordial soup