Earth's Changes

Which statement correctly describes how a landform is created?

• A sand dune is created when sand is moved and deposited by strong, persistent winds.

• A canyon is created when ice from a glacier slowly melts over time.

• A V-shaped valley is created when sediments are carried by a river and deposited at the mouth of the river.

• A delta is created when wind blows large amounts of soil towards the shore.

Freeport, Texas, is built on a growing delta at the mouth of the Brazos River. The land on which Freeport is built continues to grow because the Brazos River-

• deposits new material on the delta

• removes sediments from the delta

• moves farther away from the delta

• receives fresh water from the delta

What is missing?

• weathering and heat

• compaction and cementation

• deposited Sediment

• melting and pressure

What do the processes of the formation of sedimentary rocks and fossil fuels have in common?

• Sedimentary rocks are the only type of rock where fossils are found that produce energy.

• Sedimentary rocks and fossil fuels are mixed with fossils to provide energy.

• Fossil fuels and sedimentary rocks are burned to release energy.

• Sedimentary rocks and fossil fuels are both formed over a long period of time with high pressure.

Wind, water, or ice moving sediments across the land describes

• weathering

• erosion

• deposition

• sand dunes

A narrow opening in Earth created by the movement of wind and water.

• sand dune

• delta

• weathering

• canyon

This fossil fuel is a liquid made from organic matter, heat and pressure over millions of years.

• organic matter

• oil

• coal

• natural gas

This gaseous fossil fuel is produced from organic matter and is used to heat homes and cook.

• organic matter

• oil

• coal

• natural gas

Finding fossils in an area can help us learn what about the location?

• Which places in the region receive the most sunlight

• The effect of the climate on the formation of soil

• how modern plants and animals interact there

• the kinds of organisms that lived there long ago

Which statement correctly describes how a landform is created?

• A canyon is created when ice from a glacier slowly melts over time.

• A delta is created when wind blows large amounts of soil toward the shore.

• A sand dune is created when an earthquake breaks large rocks into small particles.

• A V-shaped valley is created when a fast-moving river carves steep sides into hills and mountains.