24-25 Earth's Systems and Human Impact CA #2

Front

What is a fossil?

Back

Remains of animals that lived long ago.

Front

Which PERIOD is the longest according to the geological time scale?

Back

Cretaceous.

Front

What causes convection currents in the Earth's mantle?

Back

Hot magma rises while cool magma sinks.

Front

Which of the following is NOT a factor that can cause erosion?

Back

Sunlight.

Front

What natural hazard can be caused by underwater earthquakes?

Back

Tsunamis.

Front

What is erosion?

Back

The process by which soil and rock are removed from the Earth's surface by natural processes.

Front

What is the role of gravity in erosion?

Back

Gravity pulls materials down slopes, contributing to erosion.

Front

What is the difference between weathering and erosion?

Back

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

Front

What are convection currents?

Back

Movement in a fluid caused by differences in temperature and density.

Front

What is the significance of the Cretaceous period?

Back

It is known for the dominance of dinosaurs and the first appearance of flowering plants.