Which minerals contain the two most abundant elements by mass in Earth’s crust?

The innermost layer of the earth is thought to be made of solid iron. What is the name of this layer?

What geologic event occurred most recently?

The true shape of the earth is best described as a

Which planet orbit around the sun is most nearly circular?

Which processes lead directly to the formation of igneous rock?

What causes tectonic plates to move?

When did the Jurassic period end?

At which location would an observer find the greatest force caused by the earth’s gravity?

One factor responsible for the strength of gravitational attraction between a planet and the sun is the

Which rock is composed of the mineral halite that formed when seawater evaporated?

Earths solid, rocky surface is the

A well was drilled in Syracuse, New York. The first bedrock layer reached by the drill formed during which period?

Which object best represents a true scale model of the shape of the earth?

The modern heliocentric model of planetary motion states that the planets travel around

Which two rocks have the most similar composition?

What is the minimum number of seismograph stations needed to locate an earthquake epicenter?

Geologists have subdivided geologic time into periods that are based on

The polar circumference of the earth is 40,008 kilometers. What is the equatorial circumference?

Which planet has a density that is less than the density of liquid water?

Which type of rock is most likely to contain fossils?

Which wave can only go through solids?

During which of the following geologic periods did trilobites exist?

As an observer travels northward from New York State, the altitude of the north star

Which planet has completed less than one orbit of the sun in the last 100 years?