Final answer:
Wells are man-made structures that access groundwater, springs are natural outlets of groundwater, hot springs have significantly hotter water, and geysers are hot springs that periodically erupt with hot water and steam.
Step-by-step explanation:
Wells, springs, hot springs, and geysers are all related to the movement of groundwater and thermal energy in the Earth's crust.
Wells are human-made structures that tap into an underground aquifer to access water. They can be drilled or dug and are used for various purposes like drinking water, irrigation, or industrial use.
Springs are natural outlets where groundwater flows to the Earth's surface. They occur when an aquifer intersects with the ground surface, resulting in water flowing out of the ground.
Hot springs are springs with water that is significantly hotter than the average human body temperature.
Geysers are a specific type of hot spring that periodically erupts with a fountain of hot water and steam due to pressure build-up from heated underground water.