Chapter 4: Geology - The Earth Speaks Review

Vocabulary flashcards covering key concepts, geological definitions, layer properties, and resource classifications from Chapter 4 geology review notes.

Geology

The study of the earth.

Historical Geology

Geological study encompassing processes such as the formation of the geologic column, the forming of the Grand Canyon, and fossil records.

Uniformitarianism

The assumption that current natural, earth-shaping processes also shaped the earth in the past at the same rate.

James Hutton

The individual who introduced uniformitarianism.

Actual Resource

A resource that is currently being used right now.

Earth's Crust (Lithosphere)

The thinnest, least dense layer of the earth, made of solid, low-density rock divided into tectonic plates, ranging in thickness from $3\text{--}6\text{ mi}$ ($5\text{--}10\text{ km}$) under oceans to $13\text{--}56\text{ mi}$ ($20\text{--}90\text{ km}$) under continents.

Mohorovičić Discontinuity (Moho)

A discontinuity boundary line located between the crust and the mantle.

Deep-time Viewpoint

An old-earth view of earth's history that includes assigning ages to rocks extending far back in time.

Seismic Waves

Earthquake waves studied by scientists to determine the interior structure of the earth.

Earth's Core

The innermost layer of the earth, believed to be made mostly of iron with some nickel, consisting of a solid region and a liquid region.

Earth's Mantle

The region making up most of the earth's volume, containing the asthenosphere, composed entirely of dense, hot, plastic-like solid rock that is less dense than the core.

Earth's Magnetic Field

A field that deflects dangerous radiation particles streaming from the sun and space, possibly originating in Earth's core.

Creation Mandate

The biblical directive to subdue the earth and hold dominion in a wise manner to preserve life, meet human needs, and populate the earth.

Habitability Zone

The region in space around the sun where liquid water can exist; moving beyond it causes a lack of sunlight, freezing of liquid water, and formation of carbon dioxide clouds.

Jupiter

The planet whose gravity is most responsible for keeping asteroids away from Earth.

Renewable Biological Resource

Living natural resources that can replenish themselves, such as forests and tuna fish.

Renewable Nonbiological Resource

Non-living natural energy sources or materials that naturally replenish, such as hydroelectric power, drinking water, solar energy, and wind energy.

Nonrenewable Biological Resource

Organic or living resources that cannot be easily replenished once depleted, such as nearly extinct species.

Nonrenewable Nonbiological Resource

Inorganic natural resources that exist in finite amounts and cannot be naturally replenished, such as iron ore and oil.

The mantle is ______ dense than the core material.

Less

The age of the earth according to young-earth creationists.

6000-7000 years

Why is the earth’s location in the Milky Way ideal for God’s image bearers.

1) provides safety for life 2) allows a clear view of the heavens

Why do we have seasons?

Earth’s tilt allows for varying temperatures as the earth orbits the sun

Tectonic plates

The earth’s crust (lithosphere) is made of these large sections

What would happen if the earth’s orbit took it beyond the habitability zone?

1) too little sunlight= no photosynthesis 2) carbon monoxide clouds would form 3) most liquid water would freeze

What is the age of the earth according to secular geologists?

4.5 billion years

Facts about the earth’s crust.

Thinnest layer, thinner under the ocean/thicker under the continents, least dense layer

What is Moho and where is it found?

A discontinuity boundary line between the crust and the mantle

Deep-time viewpoint

Old-earth view of earth’s history which includes assigning ages to rocks that extend back in time

What is unique about earth’s atmosphere compared to other planets?

It’s transparent

How to scientists know what is inside the earth?

By studying seismic waves

What do earth’s resources need protection from?

Pollution or abuse

Can plate tectonics be explained by both young-earth worldview and secular worldview?

Yes

What is a way to conserve nonrenewable resources?

Recycle

What is the importance of wisely managing the earths resources?

It fulfills the creation mandate by allowing us to meet people’s needs and furthering to populate the earth.

What is important about the earth’s atmosphere compared being the only planet in our solar system with liquid water?

All living things depend on liquid water. It’s the only one to have it.

What do scientists believe the core is made up of?

Mostly iron with some nickel.

What properties make a resource precious or valuable?

The need or demand for it and how accessible it is.

Do all scientist believe the earth is regular and predictable?

Yes

Mass

Creates a gravitational strength that is just right for life

Tilt

evens out seasonal surface temperatures

Water

Dissolves nutrients that living things need and moderates Earth’s climate

Atmosphere

Contains oxygen and shields from meteors

Magnetic field

Deflects dangerous radiation particles from the sun

Relationship to the sun

Provides proper light and heat for life

Location in the solar system

Minimizes the possibility of collisions with asteroids

Location in the galaxy

Protects from radiation from supernovas and the effects of black holes

T/F The plate tectonics theory began as a secular geological idea

True

T/F Most scientist today believe that the earth is about 7000 years old.

False

T/F geology involved both observing the earth and trying to make sense of its history.

True

T/F Christian geologist shouldn’t use the principle of uniformity.

False

T/F most modern geologists are uniformitarians.

False

Section A

Made of solid, low density rock, varies in thickness from 3-6 mi- 13-56 mi.

Section B

Makes up most of earth’s volume, contains asthenosphere, made entirely of dense, hot, plastic like solid rock

Section C

Consists of solid and a liquid region, seismic waves from the surface slow down as they enter this region, some waves cannot penetrate this region.

T/F the Moho marks the bottom of the lithosphere.

False

Area A

Crust

Area B

Mohorovičić discontinuity

Area C

Lithosphere

Area D

Asthenosphere

Area F

Contains both a solid and liquid part, and possibly the source of the earth’s magnetic field.