Geologic Time Review

Question 1

What did not cause a mass extinction?

Accepted Answer

Male species did not want to reproduce

Question 2

The Mesozoic Era is divided into the Triassic, the Jurassic and the Cretaceous. This is called

Accepted Answer

Periods

Question 3

Radioactive decay occurs when atoms of an unstable element

Accepted Answer

break down to form atoms of another element

Question 4

Becomes a fossil when minerals replace all or part of an organism

Accepted Answer

Petrified Fossil

Question 5

The law of superposition states that in horizontal rock layers of sedimentary rock, each layer

Accepted Answer

older than the layer above, younger than the layer below it

Question 6

What is the age of the intrusion of igneous rock in relation to the rock it passes through

Accepted Answer

always younger

Question 7

A type of organism that no longer exists on Earth is said to be

Accepted Answer

extinct

Question 8

The geologic time scale is a record of

Accepted Answer

the life forms and geologic events in Earth's history

Question 9

What is a paleontologist?

Accepted Answer

a scientist that studies fossils

Question 10

All of Earth's plates are always moving is what theory?

Accepted Answer

Plate Techtonic

Question 11

The relative age of a rock is

Accepted Answer

its age compared to other rocks

Question 12

Fossil record shows how life changed over time, for example older rocks contain fossils of

Accepted Answer

organisms that are simpler than those alive today

Question 13

New species are created from an existing species

Accepted Answer

speciation

Question 14

During Cambrian explosion during Paleozoic era, the new life forms that evolved

Accepted Answer

were invertebrates that lived in the sea

Question 15

Which of the following is a renewable resource

Accepted Answer

tidal power

Question 16

Who is the father of evolution?

Accepted Answer

Charles Darwin

Question 17

Radioactive dating enables geologists to determine

Accepted Answer

the absolute ages of rock

Question 18

In what type of rock are index fossils usually found?

Accepted Answer

Sedimentary Rock

Question 19

Which best describes how ice cores are important to the study of geologic history

Accepted Answer

show evidence of atmospheric changes

Question 20

The Paleozoic, Mesozoic and Cenozoic are divisions in the geologic time scale called

Accepted Answer

Eras

Question 21

Earth's atmosphere, oceans, and continents began to form during which time

Accepted Answer

Precambrian

Question 22

This is a record of the life forms and geologic events in Earth's history

Accepted Answer

Geologic Time Scale

Question 23

Why are index fossils useful to geologists?

Accepted Answer

To tell the relative age of rock in which they occur

Question 24

A Change in genetic make-up

Accepted Answer

mutation

Question 25

The Cenozoic era is often called the Age of

Accepted Answer

Mammals

Question 26

Can replace itself quickly, sustainable energy

Accepted Answer

renewable resource

Question 27

pressures in the environment favor the survival of a species with certain traits

Accepted Answer

natural selection

Question 28

What do most scientist think caused the mass extinction of dinosaurs at the end of creatceous

Accepted Answer

an object from space struck Earth

Question 29

Resources that can run out, that have been used faster than the rate at which they were formed

Accepted Answer

Non-renewable resources

Question 30

Which one is a non-renewable resource

Accepted Answer

coal

Question 31

All continents were all once a part of a huge land mass and broke apart and drifted

Accepted Answer

Continental Drift theory

Question 32

About 260 million years ago, Earth's continents moved together forming this super-continent

Accepted Answer

Pangea

Question 33

Fossils that were widely distributed and only lived a short period of time are called

Accepted Answer

index fossils

Question 34

Radioactive decay works best with what type of rocks

Accepted Answer

Igneous Rock

Question 35

Plates that come together to create mountains

Accepted Answer

convergent plates

Question 36

Breaking down of rocks into sediment is called

Accepted Answer

weathering

Question 37

How did the Earth change 2.5 billion years ago when organisms used photosynthesis to make food

Accepted Answer

the amount of oxygen increased in the atmosphere

Question 38

a gap or missing layer in the rock record

Accepted Answer

unconformity

Question 39

The process in which all living things have changed over time

Accepted Answer

evolution

Geologic Time Review

Questions 39

Geologic Time Review

Questions 39