Evidence of Evolution

Question 1

Continental crust is made mostly of __________ and oceanic crust is made mostly of __________.

Accepted Answer

granite, basalt

Question 2

What is the name of Alfred Wegener's hypothesis about moving landmasses?

Accepted Answer

continental drift

Question 3

Why does magma move up to and through Earth's crust?

Accepted Answer

It is less dense than surrounding rock

Question 4

The Appalachian Mountains are an example of mountains that formed at __________.

Accepted Answer

convergent boundaries

Question 5

What were the type of life-forms that existed before the Proterozoic?

Accepted Answer

prokaryotes

Question 6

Where do most volcanoes form?

Accepted Answer

at plate boundaries

Question 7

in undisturbed rock sequence the oldest rocks are on the bottom and the youngest are on the top

Accepted Answer

superposition

Question 8

Two birds (1 in Africa and 1 in N. America) look alike but they're not closely related.

Accepted Answer

convergent evolution

Question 9

Rocks close to mid-ocean ridges are __________ rocks far from mid-ocean ridges.

Accepted Answer

young than

Question 10

Places where two tectonic plates are moving away from each other are called __________

Accepted Answer

divergent boundaries

Question 11

What's the most likely way for rock at the bottom of the land to be exposed to sunlight?

Accepted Answer

weathering and erosion

Question 12

Which of the following are fossils?

Accepted Answer

all of the above

Question 13

The tallest mountains on Earth are formed by __________.

Accepted Answer

continental-continental convergence

Question 14

Which of the following is the best definition of a homologous structure?

Accepted Answer

similar features in 2 species with a common ancestor

Question 15

Which layer in the picture is most likely to be oldest?

Accepted Answer

A

Question 16

According to the table, what is the half-life of Thorium-234?

Accepted Answer

24 days

Question 17

When a divergent plate boundary forms on continents, a __________ forms.

Accepted Answer

rift valley

Question 18

Where do tectonic plates interact?

Accepted Answer

at plate boundaries

Question 19

A sample of seafloor rock is 4 mil years old. What was the polarity of the Earth at that time?

Accepted Answer

reversed

Question 20

What method is used to determine the exact age of a rock or fossil?

Accepted Answer

radiometric dating

Question 21

What is the process when one plate is forced beneath another at a convergent plate boundary?

Accepted Answer

subduction

Question 22

According to the figure, after four half-lives (22,820 years), how much C-14 would be left?

Accepted Answer

6.25%

Question 23

What is thought to be the driving mechanism of plate movement?

Accepted Answer

convection currents in the mantle

Question 24

Convergent evolution occurs when:

Accepted Answer

Unrelated organisms develop analogous structures.

Question 25

organisms that are not closely related yet evolved similar traits

Accepted Answer

convergent evolution

Question 26

What causes the seafloor to spread?

Accepted Answer

rising molten lava

Question 27

The supercontinent from Wegener's theory of continental drift is called

Accepted Answer

Pangaea

Question 28

Given the dates in the table, when would oxygen start appearing in Earth's atmosphere?

Accepted Answer

1 billion years ago

Question 29

dentify the subduction zone in the figure.

Accepted Answer

D

Question 30

Your arm is homologous with

Accepted Answer

a bird wing, a seal flipper

Question 31

A place where two plates slide laterally past each other is called a __________

Accepted Answer

transform boundary

Question 32

Which feature shown in the figure is the oldest?

Accepted Answer

Q

Question 33

How are igneous rocks formed?

Accepted Answer

from the crystallization of magma

Question 34

What features do oceanic-continent and oceanic-oceanic convergences have in common?

Accepted Answer

subduction zones and trenches

Question 35

homologous to structures in other organisms but no purpose in the organism being considered

Accepted Answer

vestigial

Question 36

The principle of ___states that an intrusion or fault is younger than the rocks it cuts across.

Accepted Answer

cross-cutting relationships

Question 37

Why does continental crust rise higher above the surface of Earth than oceanic crust?

Accepted Answer

Continental crust is thicker and is less dense.

Question 38

What is the study of Earth's magnetic record?

Accepted Answer

paleomagnetism

Question 39

If gray was past location of continent, what type of boundary is between N. America and Africa?

Accepted Answer

divergent

Question 40

What happens when two continental crusts converge?

Accepted Answer

Both plates are deformed and pushed upward

Question 41

All organisms share the same genetic code. This commonality is evidence that

Accepted Answer

All organisms are descended from a common ancestor.

Question 42

Harry Hess' theory of __________ explained how ocean crust is generated and destroyed.

Accepted Answer

seafloor spreading

Question 43

Fat-insulated bodies of seals and penguins are similar, but are not closely related.

Accepted Answer

developed through convergent evolution

Question 44

decendents that have adapted bodily structures to fit into different environments do so through

Accepted Answer

divergent evolution

Question 45

Which of the following is an example of a fossil?

Accepted Answer

all of them

Evidence of Evolution

Questions 45

Evidence of Evolution

Questions 45