Q. How do you earth surface features indicate changes over time?
The motion of the Earth’s plates produces changes on a planetary scale over a range of time periods from millions to billions of years. Evidence for the motion of plates can explain large- scale features of the Earth’s surface (e.g., mountains, distribution of continents) and how they change.
Q. How can sedimentary rock show Earth’s history quizlet?
How does sedimentary rock show Earth’s history? Composition of sedimentary rocks shows the source of the sediment that makes up the rock. Texture and features shows the environment in which the the sediment was carried and deposited.
Q. Why is it important to study the changes on Earth’s surface?
Earth’s surface is the only habitat available to the human race. Understanding the processes by which that habitat has been created and continually altered is important to determine the causes of environmental degradation, to restore what is degraded, and to guide policy decisions toward a sustainable Earth surface.
Q. What are the two main factors that shape the earth?
There are two main causes of change to be mentioned here and they are water action and wind action. The processes used by these actions are known as weathering and erosion.
Q. What caused the surface of the Earth to change over long periods of time?
Wind, water, and ice break down large rocks and move sediments on the surface. It usually takes years for weathering, erosion, and deposition to cause noticeable changes. Some events, though, change Earth’s surface much more quickly. These include volcanic eruptions, earthquakes, and landslides.
Q. What are two ways earthquakes contribute to changes on Earth’s surface?
Earthquakes often cause dramatic changes at Earth’s surface. In addition to the ground movements, other surface effects include changes in the flow of groundwater, landslides, and mudflows. Earthquakes can do significant damage to buildings, bridges, pipelines, railways, embankments, dams, and other structures.
Q. How volcanic activity change the surface of the earth?
Volcanic eruptions can profoundly change the landscape, initially through both destructive (flank failure and caldera formation) and constructive (lava flows, domes, and pyroclastic deposits) processes, which destroy vegetation and change the physical nature of the surface (e.g., porosity, permeability, and chemistry).
Q. Is there more volcanic activity than normal?
The current level of volcanic activity is completely normal, on the contrary (if not on the low end of averages over decades). The main difference is that there is faster and more information availabe, as well as increased media coverage and public interest on the subject of global volcanic activity.
