Seismic reflection is a geophysical method used to explore the Earth's subsurface. It involves sending seismic waves into the ground and measuring the waves that bounce back, or reflect, from different geological layers. This technique helps scientists and engineers understand the structure and composition of the Earth's crust, which is essential for activities like oil and gas exploration, mineral mining, and assessing earthquake risks. The process typically uses equipment like geophones to detect the reflected waves and seismographs to record the data. By analyzing these reflections, researchers can create detailed images of underground formations, aiding in resource management and environmental studies.