Energy Systems Collide
Energy systems collide in mountain ranges, where Earth's internal energy drives tectonic plates to push mountains upward while solar energy drives wind and rain to tear them down through weathering and erosion. In Amplify Science (California) Grade 7, Chapter 3: Movement of Rock Formations, students learn that mountains represent an ongoing battle between two energy sources.
Key Concepts
Mountain ranges illustrate a battle between two energy sources. Earth's internal energy drives the plates that push mountains upward. Simultaneously, solar energy drives the wind and rain that tear mountains down.
This interaction defines the cycle of erosion. As fast as internal energy builds a peak through uplift, solar powered weathering attacks it, breaking the solid rock into loose sediment. The mountain is built by the Earth, but it is destroyed by the Sun.
Common Questions
What two energy sources shape mountains?
Mountains are shaped by two competing energy sources: Earth's internal energy (from plate tectonics) builds them up through uplift, while solar energy (driving wind, rain, and erosion) tears them down.
Why do mountains erode over time?
Solar energy drives the water cycle and weather, which creates rain, rivers, and glaciers that wear away rock through weathering and erosion. Over millions of years, these forces can completely erode even large mountain ranges.
What is the relationship between uplift and erosion?
Uplift builds mountains as tectonic plates collide and force rock upward. Erosion works simultaneously to break down and remove rock. The height of a mountain at any time reflects the balance between these two processes.
Where are energy systems in rock formation covered in Amplify Science Grade 7?
Energy systems collide in rock formation is covered in Amplify Science (California) Grade 7, Chapter 3: Movement of Rock Formations.