Law of Superposition

What does the term 'rock layer' refer to?

• A rock layer is a distinct layer of rock that has formed over time, often containing fossils and minerals.

• A rock layer is a type of sediment that is found only in riverbeds.

• A rock layer is a geological formation that is always found at the surface of the Earth.

• A rock layer is a layer of soil that is rich in organic material.

In a diagram of rock layers, where would you typically find the oldest fossils?

• At the top of the rock layers

• In the middle of the rock layers

• Near the bottom of the rock layers

• Scattered throughout all layers

What is the principle of original horizontality?

• The principle that sediment layers are deposited at an angle due to tectonic activity.

• The principle that layers of sediment are originally deposited horizontally under the action of gravity.

• The principle that sediment layers are always found in a vertical position due to erosion.

• The principle that sediment layers can only be deposited in water.

What is a fault in geological terms?

• A type of rock formation that is resistant to erosion.

• A fracture or zone of fractures between two blocks of rock, which can cause earthquakes.

• A layer of sedimentary rock that contains fossils.

• A volcanic vent that releases magma and gases.

What role do fossils play in understanding geological time?

• Fossils provide evidence of past life and help scientists date rock layers, contributing to the understanding of geological time.

• Fossils are used to determine the temperature of ancient environments.

• Fossils can predict future geological events based on past occurrences.

• Fossils are primarily used to identify mineral compositions in rocks.

What is a fossil?

• A fossil is the preserved remains or traces of a once-living organism, often found in sedimentary rock.

• A fossil is a type of rock formed from volcanic activity.

• A fossil is a living organism that has not yet died.

• A fossil is a modern-day animal that has been genetically modified.

What is the Law of Superposition?

• The Law of Superposition states that the oldest layers of rocks are at the top and the youngest layers are at the bottom.

• The Law of Superposition states that in any undisturbed sequence of rocks, the oldest layers are at the bottom and the youngest layers are at the top.

• The Law of Superposition states that all layers of rocks are formed simultaneously.

• The Law of Superposition states that the layers of rocks can be disturbed and rearranged over time.

What is folding in geology?

• The process of breaking down rocks into smaller pieces.

• The bending of rock layers due to tectonic forces, which can create mountains and valleys.

• The movement of tectonic plates causing earthquakes.

• The formation of sedimentary layers in water bodies.

What is an intrusion in geology?

• A body of sedimentary rock formed from compressed sediments.

• A body of igneous rock that has formed from magma that has cooled and solidified beneath the Earth's surface.

• A type of metamorphic rock created under high pressure and temperature.

• A geological feature formed by the erosion of surface materials.

Why is it important to understand geological processes?

• It helps us comprehend Earth's history.

• It allows us to travel to other planets.

• It is essential for learning foreign languages.

• It provides insights into human psychology.