Front

What is a flood?

Back

A flood occurs when water flows or collects over land that is usually dry.

Front

Why are the rocks and pebbles found in riverbeds usually smooth?

Back

The rocks are worn smooth by rubbing against other rocks.

Front

What is sediment?

Back

Sediment is material deposited by wind, water, or glaciers.

Front

What do seismologists study?

Back

Seismologists study earthquakes.

Front

What is a dam?

Back

A dam is a structure built to hold back water and control flooding.

Front

What is a levee?

Back

A levee is an embankment built to prevent the overflow of a river.

Front

What is erosion?

Back

Erosion is the process by which soil and rock are removed from the Earth's surface by wind or water.

Front

What is weathering?

Back

Weathering is the breaking down of rocks and minerals through natural processes.

Front

What is a floodway?

Back

A floodway is a designated area that allows floodwaters to flow safely.

Front

What is contour plowing?

Back

Contour plowing is a farming practice that follows the natural contours of the land to reduce soil erosion.