Most of Earth’s major earthquakes are caused by:

Which Earth layer contains convection currents that are believed to be responsible for the movement of Earth’s tectonic plates?

The relatively thin layer of rock at Earth’s surface is called the

Which geologic process occurs when the acid in precipitation dissolves certain types of rock?

During an earthquake, the wave which causes the most damage is known as the _____________ wave.

The diagram below shows two locations where fossils of Mesosaurus have been found. Mesosaurus was a freshwater reptile that existed on Earth about 250 million years ago. Which statement best explains why these freshwater Mesosaurus fossils are found today in some rock layers in both South America and Africa?

The currents responsible for making the lithosphere move are called:

The sequence below occurs over a long period of geologic time. The sequence shows the steps involved in the formation of:

The map below shows dark bands that indicate long mountain ranges on the west coasts of North America and South America. What caused the formation of these mountain ranges?

Earth’s hydrosphere is best described as the

The diagram below represents how rock is affected when water enters cracks in rock, freezes, and becomes ice. Which geologic process is represented in the diagram here?

The diagram below shows a cross section of a portion of Earth’s crust that has not been overturned. Letters A, B, C, and D represent sedimentary rock layers that contain fossils. Which rock layer contains the oldest fossils?

The diagram below shows a portion of Earth’s crust. The formation of the rock fragments was most likely a result of:

Base your answer to question 17 on the cross section below and on your knowledge of science. The cross section compares the densities of different Earth layers. Which Earth layer is most dense?

What geological event(s) or feature(s) can frequently occur when lithospheric plates collide (converge) or move apart from each other (diverge).

Convection currents, which may be the driving force for the movement of lithospheric plates, are mostly found in Earth’s _______________ .

The contour lines on the map show the elevation of the land above sea level. This depicts a hill with the peak as the central oval. Point X represents a location on the hill. Determine the elevation of location X.

Describe one piece of evidence on the map that indicates that the western side (left side) of the hill has the steepest slope.

Select which action(s) that people living in California can take to prepare for a future earthquake.

Alfred Wegener hypothesized Pangea was a supercontinent that ran north to south across the equator. North America was positioned over the equator. If that were the case, which choice best describes how the climate of the United States might differ at that time compared to the climate we experience today?

Define epicenter and focus and describe their relationship.

The maps show the change in the positions of South America and Africa over the last 65 million years. Describe the process that most likely caused the change in the positions of South America and Africa over the last 65 million years.