Analyzing Statement 1: Diastrophism Definition

Statement 1 defines diastrophism as encompassing all processes that move, elevate, or build up portions of the Earth's crust. This is a correct definition. Diastrophism includes large-scale movements of the Earth's crust, such as folding, faulting, uplift, and subsidence. These processes are fundamental in shaping the planet's major landforms and are often associated with tectonic activity.

Analyzing Statement 2: Exogenic Processes Energy Sources

Statement 2 discusses exogenic processes, stating they derive their energy from the atmosphere, influenced by solar energy and tectonic gradients.

• Exogenic Processes: These are processes that operate on or near the Earth's surface, driven by external forces. Examples include weathering, erosion, transportation, and deposition.
• Energy Sources: The primary energy source for exogenic processes is solar radiation, which powers atmospheric circulation (winds) and the water cycle (precipitation, evaporation). Gravity also plays a significant role, driving processes like mass wasting and surface runoff.
• Influence of Tectonic Gradients: While exogenic processes derive their energy directly from solar radiation and gravity, tectonic gradients (like mountain ranges created by endogenic processes) influence *where* and *how intensely* these exogenic processes occur. For example, steep slopes created by tectonic uplift increase the potential energy for erosion and mass movement. Therefore, exogenic processes are indeed influenced by factors related to tectonic activity. The statement correctly identifies solar energy as a key driver and acknowledges the influence of tectonic gradients.

Considering these points, Statement 2 accurately reflects the energy dynamics and influencing factors of exogenic processes.

Conclusion on Statements

Both Statement 1, defining diastrophism, and Statement 2, describing the energy sources and influences on exogenic processes, are considered correct based on geological principles.