7-Science-Evolution-Final Study Guide-Vocab Flashcards Preview

K 7th Grade > 7-Science-Evolution-Final Study Guide-Vocab > Flashcards

Flashcards in 7-Science-Evolution-Final Study Guide-Vocab Deck (14):
1

endangered

in danger of going extinct

2

extinct

no surviving members of the species

3

fossils

remains of organisms preserved in rock

4

trace fossils

show signs of activity

5

observation

a direct description of the evidence (ex- fossil footprint cards- what you actually saw)

6

inference

interpretation or conclusion made from observations (ex- fossil footprint cards- what you thought could have been happening based on observations)

7

index fossils

forms of life which existed during limited period of geologic time

8

law of superposition

fossils found in the top rock layers are younger than fossils found in any rock layer below them

9

evolution

changes through time

10

variation

differences in organisms of the same species

11

adaptation

a trait that helps an organism survives in its environment

12

Natural selection

process in which organisms that are better adapted to their envionment are more likely to survive/reproduce

13

mutation

an error made when DNA is copied (creates variation)

14

speciation

when one species becomes two or more different species (ex- Darwin's finches or cichlids in Lake Victoria)