science study cards

Question 1

fossils

Answer 1

Preserved remains or traces of living things. Most form when living things die or are buried.

Question 2

Paleontologist

Answer 2

scientists that study fossils to learn about ancient organisms

Question 3

fossil record

Answer 3

all the fossils scientists have collected over time.

Question 4

extinct organisms

Answer 4

species that is extinct there are no more of it

Question 5

evolution

Answer 5

the change in living things

Question 6

sedimentary rock

Answer 6

overtime soil, mud and silt stuck together and harden into rock

Question 7

relative dating

Answer 7

a form of dating where scientists determine which of two fossils are older.

Question 8

absolute age

Answer 8

the number of years that have passed since rock has formed

Question 9

law of superposition

Answer 9

In undisturbed horizontal sedimentary rock layers, the oldest is
at the bottom.

Question 10

lava

Answer 10

molten material that has reached earths surface

Question 11

magma

Answer 11

Molten material beneath earths surface

Question 12

fault

Answer 12

a break in the earths crust

Question 13

Unconformity

Answer 13

A gap in the geologic record.

Question 14

Radioactive Dating

Answer 14

A second form of dating that allows scientists to determine the
actual age of fossils.

Question 15

Geologic Time Scale

Answer 15

A record of the geologic events and the evolution of life forms
as shown in the fossil record.

Question 16

Cambrian Explosion

Answer 16

Life took a big leap forward during the Cambrian Period

Question 17

Mass Extinction

Answer 17

An event that happens whenever many types of organisms
become extinct at the same time.

Question 18

Paleozoic Era

Answer 18

oldest

Question 19

Mesozoic Era

Answer 19

middle

Question 20

Cenozoic Era

Answer 20

youngest