7.2.2, 7.2.3, 7.2.6 Earth's Changing Surface, Engineering, Age

Front

What is deposition?

Back

Deposition is the process by which sediment, soil, and rocks are added to a landform or land mass. It occurs when the forces transporting the material lose energy and can no longer carry the load.

Front

What is relative age?

Back

Relative age is an estimation of the age of an object or event based on its position relative to other objects or events. It does not provide an exact age but rather a comparison.

Front

True or False: The Earth's surface does not change over time.

Back

False. The Earth's surface is constantly changing due to processes like erosion, deposition, and tectonic activity.

Front

What are the time units used to divide Earth's geologic history?

Back

Earth's geologic history is divided into eons, eras, and periods.

Front

What causes gravestones to break down and turn blackish?

Back

The breakdown and discoloration of gravestones can be caused by acid rain, which is a form of chemical weathering.

Front

What is erosion?

Back

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

Front

What is weathering?

Back

Weathering is the breaking down of rocks and minerals at the Earth's surface through processes like physical, chemical, and biological actions.

Front

What is the rock cycle?

Back

The rock cycle is a continuous process that describes the transformation of rocks through various stages: igneous, sedimentary, and metamorphic.

Front

What is the difference between absolute age and relative age?

Back

Absolute age is the actual age of an object or event, often determined through methods like radiometric dating, while relative age is determined by comparing its position to other objects.

Front

What are tectonic plates?

Back

Tectonic plates are large sections of the Earth's lithosphere that move and interact with each other, causing geological events like earthquakes and volcanic eruptions.