Earth Science Chapter 4

The earth's crust is usually _______ under the oceans as compared to the continents.

Geologists believe this part of the earth to be liquid or has liquid properties.

This makes up 84% of the earth's volume.

Seismic Waves would indicate that the inner core is ____.

These deflect comets and similar objects from getting too close to the earth.

The magnetic field of the earth protects us from ______.

We are located in this area of the Milky Way.

Geology means the study of the _____.

The ______ is the region around the sun where water can exist as a liquid.

Scientists studied these to learn about the layers of the earth.

This dilutes oxygen in our atmosphere so we have the right amount of oxygen necessary for life.

If the earth's axis were perpendicular to its orbital plane, _____.

The crust is divided into distinct pieces called _____.

What creation based theory suggests God started simple life then let evolution take over?

This scientist published the book The Principles of Geology in 1830.

Frozen water _____ which makes it possible for animals to survive in ponds during the winter.

The moon's gravity produces ____ on earth.

This percentage of the earth is covered in water.

The combination of the upper mantle and the crust is called the ____.

Our seasons are most directly caused by _____.

At the bottom of the crust is the _____ which is a discontinuity.

This is the percentage of the earth's volume assigned to the crust.

The outer layer of the earth is called the _____.

Earth's gravity is designed for life fits with what evidence?

The layer below the lithosphere where the seismic wave speed slows down.

People believe that this comes from the movement of liquid metals at the center of the earth.

The earth's axis is tilted ____ degrees.

The atmosphere is a physical shield which causes _____ to burn up in the atmosphere.

Most secular geologists believe that the earth is about ____ years old.

The earth's atmosphere is _____ which means light is allowed through.

The three main layers of the earth are the crust, ____, and core.