Describe Natural Process Impacts - 4th Grade Science

The breaking down of rock into smaller pieces. Water, ice, wind, and temperature changes slowly break rock apart.

It can remove land and weaken or damage buildings and roads. Soil loss undermines foundations, causing structural collapse.

Water covering land that is usually dry. Occurs when rivers overflow, heavy rain falls, or snow melts rapidly.

Heavy rain. Water saturates soil, making it heavy and slippery on slopes.

A rapid downhill movement of rock, soil, or debris. Gravity pulls loose material down steep slopes, especially when wet.

Lava and ash can destroy homes and harm breathing. Hot materials burn structures and tiny ash particles damage lungs.

An opening where magma, ash, and gases reach Earth’s surface. Molten rock rises through cracks in Earth's crust due to pressure.

Earthquake. Underwater earthquakes displace ocean water, creating massive waves.

A series of large ocean waves caused by undersea disturbance. Usually triggered by earthquakes, volcanic eruptions, or underwater landslides.

Shaking that damages buildings and can injure people. Ground motion collapses structures and falling debris causes injuries.

Movement of tectonic plates along faults. Plates grind past, pull apart, or collide at boundaries, releasing energy.

A natural event that can cause harm to people or property. Natural forces like earthquakes, floods, or storms that threaten human safety.

Heavy rain that makes soil loose and unstable. Water saturates soil, reducing friction between particles.

A rapid downhill movement of rock and soil. Gravity pulls unstable earth materials down steep slopes.

It can remove land and damage homes, roads, and farmland. Erosion undercuts foundations and washes away valuable topsoil.

Reduced water supply for drinking and farming. Water scarcity affects crops, livestock, and human consumption.

Magma rising and escaping through a volcano. Molten rock erupts when pressure builds beneath Earth's surface.

Breathing problems and damage to crops and roofs. Fine particles irritate lungs and accumulate on surfaces.

They can damage buildings, roads, and cause injuries. Shaking destroys structures and infrastructure, endangering lives.