Chapter 4: The Earth Speaks

Geology & Earth’s History

100

This science studies Earth, its rocks, its structure, and how it changes.

Geology 

200

This view emphasizes slow, ongoing natural processes acting over long periods.

Uniformitarianism

300

This view emphasizes sudden, major events that rapidly shape Earth’s surface.

Catastrophism

400

According to the chapter’s young-Earth creationist view, Earth is approximately this old.

6,000–7,000 years

500

This branch of geology studies processes happening now or in the recent past.

Operational geology

Scientists & Discoveries

100

This scientist proposed continental drift in 1912.

Alfred Wegener

200

This was the name of the supercontinent proposed in continental drift.

Pangaea

300

This scientist introduced uniformitarianism in 1795.

James Hutton

400

This scientist discovered the boundary between Earth’s crust and mantle.

Andrija Mohorovičić

500

These earthquake vibrations provide evidence about Earth’s interior.

Seismic waves

Earth’s Layers

100

This thin, rocky layer forms Earth’s outer surface.

Crust

200

This thick layer of hot, solid rock lies between the crust and core.

Mantle 

300

This boundary separates the crust from the mantle.

MOHO

400

This rigid layer includes the crust and uppermost solid mantle.

Lithosphere

500

This liquid layer contains moving metal that helps generate Earth’s magnetic field.

Outer Crust 

Rocks, Plates & the Core

100

Continental crust is made mostly of this rock.

Granite

200

Oceanic crust is made mostly of this rock.

Basalt

300

This type of crust is thicker and less dense than oceanic crust.

Continental crust

400

This slow circulation of hot mantle rock helps drive tectonic plate movement.

Mantle convection

500

This metal makes up most of Earth’s core. What is its atomic symbol: 

Fe (Iron)

Managing God’s Resources

100

Wind belongs to this category because it is naturally replenished.

Renewable resource

200

Coal belongs to this category because its supply is limited and it cannot be replaced quickly.

Nonrenewable resource

300

A resource currently being used is called this.

Actual resource

400

This practice uses a resource at a rate that allows it to replenish naturally.

Sustainable yield

500

This term means carefully monitoring and regulating the use of land, water, wildlife, and other resources.

Resource management

Designed for Life

100

In June, the Northern Hemisphere receives more direct sunlight than in December because of this feature of Earth.

Earth's tilt

200

This motion limits how long a location continuously receives sunlight, helping prevent prolonged heating or cooling.

Earth's rotation 

300

Coastal areas often experience smaller temperature swings because this substance absorbs and releases large amounts of heat.

Liquid water 

400

Without this protective layer, Earth would lose its supply of breathable gases and its ozone shield against harmful ultraviolet radiation.

Atmosphere 

500

If this protection weakened, more charged particles from the solar wind could reach near-Earth space and contribute to atmospheric loss.

Earth’s magnetic field

Final Jeopardy

100

Name all seven evidences of God’s design for Earth taught in this chapter. Then choose two and explain how each helps support or protect life.

1. Mass and structure
2. Earth’s tilt
3. Earth’s rotation
4. Liquid water
5. Atmosphere
6. Magnetic field
7. The Sun

Acceptable explanations include:

• Mass and structure: Provide gravity that holds the atmosphere.
• Tilt: Produces seasonal changes in sunlight.
• Rotation: Produces regular day-and-night cycles.
• Liquid water: Supports life and moderates temperatures by absorbing heat.
• Atmosphere: Provides breathable gases and protection from harmful UV radiation.
• Magnetic field: Deflects charged particles from the solar wind.
• The Sun: Supplies energy for photosynthesis.