Front

What are tectonic plate boundaries?

Back

Tectonic plate boundaries are the edges where two tectonic plates meet. These boundaries can be divergent, convergent, or transform, and they are often associated with geological activity such as earthquakes and volcanoes.

Front

Which layer of sedimentary rock is the oldest in a cross-section?

Back

The oldest layer of sedimentary rock is the one at the bottom of the cross-section, as sedimentary layers are deposited over time, with newer layers forming on top of older ones.

Front

Where does the greatest amount of deposition occur in a river system?

Back

The greatest amount of deposition occurs at the mouth of the river, where it flows into a larger body of water, such as a lake or ocean, and the flow velocity decreases.

Front

What was Pangaea?

Back

Pangaea was a supercontinent that existed during the late Paleozoic and early Mesozoic eras, where all the continents were joined together. It began to break apart about 200 million years ago.

Front

What is the electric force?

Back

The electric force is the attraction or repulsion between charged particles. It is stronger when the charges are closer together and weaker when they are farther apart.

Front

What is sedimentary rock?

Back

Sedimentary rock is a type of rock formed by the accumulation and compaction of mineral and organic particles, often found in layers.

Front

What is erosion?

Back

Erosion is the process by which soil and rock are removed from the Earth's surface by natural forces such as wind or water, and transported to another location.

Front

What is deposition?

Back

Deposition is the geological process where material is added to a landform or land mass, often occurring when the energy of the transporting medium decreases.

Front

What is a river delta?

Back

A river delta is a landform that forms at the mouth of a river, where it meets a body of water, and sediment is deposited, creating new land.

Front

What is the significance of fossils in sedimentary rock layers?

Back

Fossils found in sedimentary rock layers provide important information about the Earth's history, including past environments and the evolution of life.