Exam 1: Earth Systems

The Earth's mantle lies over the core, and the crust lies over the mantle.

The fundamental source of energy that drives Earth's surface systems--the atmosphere, hydrosphere, and biosphere--is:

During the formation of planets, gravitational forces caused small rocky spheres to collide and coalesce to form mini-planets called __________.

More water exists in the Earth's atmosphere than in surface streams and lakes.

At its center, Earth is as hot as the Sun's surface.

The Earth is about 460 million years old.

The Earth's mantle is found in the:

The consequence of the vastness of geologic time is that:

A __________ is any combination of interrelated, interacting components.

The Earth's atmosphere is a mixture of gases, mostly nitrogen and hydrogen.

__________ is a principle stating that the geologic processes operating today also operated in the past.

Ground water accounts for 71 percent of the Earth's water.

The crust is about:

Our Solar System formed:

The Earth's outer, cool, rigid shell is broken into several segments called __________ __________.

According to current trends in Earth's population development, it is likely that pressure on Earth's resources will __________.

The biosphere consists solely of the thin zone on the surface of the continents that is inhabited by life.