A scientist is conducting an investigation. The scientist uses a diagram to trace how water moves through the atmosphere, hydrosphere and lithosphere which process is the scientist most likely investigating.

Based on the information provided, the scientist is most likely investigating the water cycle, also known as the hydrological cycle. The water cycle is the continuous movement of water on, above, and below the surface of the Earth. It involves the processes of evaporation, condensation, precipitation, and runoff, through various components of the Earth system, including the atmosphere, hydrosphere, and lithosphere. By tracing how water moves through these components, the scientist is studying the overall water cycle and its various processes.

Based on the information provided, the scientist is most likely investigating the water cycle, also known as the hydrological cycle. This cycle involves the movement of water between the atmosphere, hydrosphere (which includes oceans, rivers, lakes, and groundwater), and lithosphere (which includes rocks, soil, and landmasses). By tracing how water moves through these different spheres, the scientist can study the processes and interactions that occur within the water cycle.

Based on the information provided, it appears that the scientist is investigating the water cycle or the hydrological cycle. The water cycle refers to the continuous movement of water on, above, and below the Earth's surface. It involves processes such as evaporation, condensation, precipitation, and runoff.

To further understand the scientist's investigation, we can break down the processes in each sphere:

1. Atmosphere: The water cycle begins with evaporation. Sunlight heats water bodies such as oceans, lakes, and rivers, causing water molecules to turn into vapor and rise into the atmosphere.

2. Hydrosphere: Once water vapor is in the atmosphere, it undergoes condensation. Water vapor cools and condenses into tiny droplets or ice crystals, forming clouds.

3. Lithosphere: When these water droplets in the clouds become too heavy, they fall back to the Earth's surface in the form of precipitation. Precipitation can take the form of rain, snow, sleet, or hail.

4. Runoff: After precipitation, water can follow several paths. Some of it seeps into the ground (infiltration) and becomes groundwater. Some water runs off the surface into rivers, lakes, and oceans. This runoff collects and forms bodies of water, contributing to the hydrosphere.

By using a diagram to trace the movement of water through the atmosphere, hydrosphere, and lithosphere, the scientist can analyze and study how water moves and cycles through different components of the Earth system. This investigation can provide insights into patterns, dynamics, and interactions that shape Earth's water availability and distribution.