Earth Science Cumulative Review

Front

What is the continental drift hypothesis?

Back

The continental drift hypothesis suggests that continents were once connected and have since drifted apart over geological time.

Front

What evidence supports the idea that South America and Africa were once connected?

Back

The presence of similar fossils in both continents supports the idea that they were once connected.

Front

What are the three types of evidence that support Alfred Wegener's Theory of continental drift?

Back

Fossils, Land forms, and Climate.

Front

What does the principle of superposition state?

Back

In undisturbed rock layers, the oldest layers are at the bottom and the youngest layers are at the top.

Front

What is erosion?

Back

Erosion is the physical transportation of rock sediments from one location to another.

Front

What factors can cause the water table to lower?

Back

High rates of evaporation and transpiration can cause the water table to lower.

Front

What is the difference between weathering and erosion?

Back

Weathering is the breaking down of rocks, while erosion is the movement of those broken-down materials.

Front

What is a fossil?

Back

A fossil is the preserved remains or traces of a once-living organism.

Front

What role do fossils play in understanding Earth's history?

Back

Fossils provide evidence of past life and help scientists understand the evolution of species and changes in environments.

Front

What is the rock cycle?

Back

The rock cycle is the continuous process of rock formation, breakdown, and reformation through geological processes.