Relative Dating Check for Understanding

Front

What is an unconformity?

Back

An unconformity is a surface that represents a gap in the geological record, formed when rock layers are uplifted, weathered, eroded, and then covered by new sediment.

Front

What happens to a rock layer that is uplifted, weathered, and eroded?

Back

It may form an unconformity when it subsides back under water.

Front

What does it indicate if a rock layer is bumpy?

Back

It indicates that the rock must have been uplifted, then weathered and eroded.

Front

Where do flat rock layers typically form?

Back

Flat rock layers typically form underwater.

Front

What is the significance of the order of rock layers?

Back

The order of rock layers can indicate the sequence of geological events and the relative ages of the rocks.

Front

What type of rock is shale?

Back

Shale is a fine-grained sedimentary rock that forms from the compaction of silt and clay-sized particles.

Front

What is the process of weathering?

Back

Weathering is the breakdown of rocks at the Earth's surface due to environmental factors like water, wind, and temperature changes.

Front

What is erosion?

Back

Erosion is the process by which soil and rock are removed from one location and transported to another, often by wind, water, or ice.

Front

What does it mean for a rock layer to be uplifted?

Back

Uplifted means that the rock layer has been raised to a higher elevation, often due to tectonic forces.

Front

What is the difference between weathering and erosion?

Back

Weathering is the breakdown of rocks, while erosion is the movement of those broken materials.