7.10A DO NOW Vocabulary Evidence of Earth's Change Over Time #2

Front

What is the principle of superposition in geology?

Back

The principle of superposition states that in undisturbed sedimentary rock layers, the oldest layer is at the bottom and the youngest layer is at the top.

Front

What are tectonic plates?

Back

Tectonic plates are more than a dozen distinct plates that make up Earth’s surface and slowly move in different directions.

Front

What is a supercontinent?

Back

A supercontinent is one giant continent into which most or all of the continents were assembled long ago.

Front

What does continental drift refer to?

Back

Continental drift is the idea that the continents were once fused together but slowly drifted apart over time.

Front

Define sedimentary rock.

Back

Sedimentary rock is a type of rock formed by the accumulation and compaction of mineral and organic particles.

Front

What is the significance of fossils in understanding Earth's history?

Back

Fossils provide evidence of past life and environmental conditions, helping scientists understand how Earth has changed over time.

Front

Explain the concept of plate tectonics.

Back

Plate tectonics is the theory that explains the movement of Earth's lithosphere, which is divided into tectonic plates that interact at their boundaries.

Front

What is the role of erosion in shaping the Earth's surface?

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, shaping landscapes.

Front

What evidence supports the theory of continental drift?

Back

Evidence includes the fit of continental coastlines, fossil similarities across continents, and geological similarities.

Front

What are the three types of plate boundaries?

Back

The three types of plate boundaries are convergent, divergent, and transform boundaries.