Students in a science class learn that groundwater is an important source of drinking water for many communities. They construct
a model to study how leaking chemicals from a landfill can affect groundwater. What is the most effective way for the students to see how leaking chemicals from a landfill can enter a well?
A.Tilt the tank towards the well and drain some of the water out of the tank.
B.Drop food color into the well at the well's opening.
C.Tear some of the colored tissue paper and put the paper pieces into the well at the well's opening.
D.Pump water out of the well to see how stained water from the tissue paper moves toward the well.
Groundwater is also one of our most important sources of water for irrigation from septic tanks and toxic chemicals from underground storage tanks and leaky landfills ... Drinking contaminated groundwater can have serious health effects. If there is a leak, these contaminants can eventually make their way down
The amount of electric power produced for each unit of thermal power gives the plant its thermal efficiency, and due to the second law of thermodynamics there is an upper limit to how efficient these plants can be.
