Chapter 4 lines of evidence Flashcards Preview

Oceanography > Chapter 4 lines of evidence > Flashcards

Flashcards in Chapter 4 lines of evidence Deck (12)
Loading flashcards...
1

Pangaea

is the name we give to the super continent that existed before the breakup of the plates into their minor constituents.

2

Creationism

a belief that the Earth was actually young but created to look old

3

Uniformitarianism

the processes like erosion that happened in the past are happening now

4

Catastrophism

the belief that the major landforms were created by catastrophic events and that cannot be accounted for by uniform processes

5

Evolution

an idea that changing life forms take generations to evolve indicating an Earth much older than suggested by Creationists

6

Paleoclimate

Paleoclimate studies indicate that major ice sheets that covered the poles also covered the landmasses that were at those latitudes.

7

Glacial striations

indicating the direction of glacial movement

8

Isotope

An unstable atom or element that has extra mass (neutrons) in its nucleus.

9

Parent

An unstable isotope.

10

Daughter

The decay product of an isotope. A daughter product can be another isotope or the stable form of an atom. Different kinds of particles (alpha or beta) are involved in the decay process.

11

Half-life

The time it takes for one half of the radioactive nuclei in a sample to decay.

12

eta decay

The decay of carbon-14 is called a beta decay