Science Mod 5
One student conserves 3 cups of water by turning off the tap while brushing teeth for 2 minutes. What is the approximate amount of water 4 students would conserve by this method?
12 cups
A local farmer uses chemical fertilizers in his farm. The runoff from the farm pollutes a river which supplies drinking water in the location. This causes serious health problems among people in the location. Which of these is the best method to solve this problem?
Ask the farmer to use compost to fertilize the farm.
The table below shows some surface features and processes. Which column in the table correctly matches a surface feature with the process responsible for its formation?
Column 1
Which of the following best describes the transfer of phosphates and the impact on the environment and human health?
Detergents containing phosphates are carried from land to water by rain, contaminating drinking water and causing digestive problems in humans.
Most of the drinking water in a location comes from a river. A steel plant is to be built close to the river. It would provide jobs and facilities to many people in the location. The steel plant would use a huge amount of river water. This might cause drinking water scarcity in the location. Which of these is the best method to solve this problem?
Formulate appropriate reviews and controls to prevent excess use of river water.
Which of these statements best describes a use of the watershed model?
It helps forecast the amount of surface water at different locations.
A gallon of water costs about $0.04. An article in a magazine states that a household can save about $120 in water expenses per year by using a front-loading machine instead of a top-loading machine. Which of these statements is correct about the information provided by the article in the magazine?
It is reliable because a front-loading washing machine saves 3,000 gallons of water per year and 3000 multiplied by 0.04 is 120.
. Thermoelectric power plants are used to generate electricity. Which of these statements best describes the impact of a thermoelectric power plant on the environment?
It uses a lot of water.
The pH of water in four locations in Florida is shown in the table below. Which of these conclusions is most likely correct about people in the four locations?
People in Location C would complain about a foul taste in water.
Almost 50 percent of water withdrawn in the US, is used up by thermoelectric power plants. The table below shows the amount of water withdrawn in the U.S., in billion gallons per year, between 1950 and 2005. Year /Amount of water withdrawn in the US (in billion gallons per y) 1950 / 180 1965 / 340 1975 / 420 1990 / 140 2005 / 410 Based on the table, which of these conclusions is most likely correct?
The number of thermal power plants increased between 1950 and 1975.
A location in Florida is facing acute water shortage. Which of these is the best method to conserve water in homes of the location?
Use energy efficient appliances.
The picture below shows a land surface in a location in Florida. Which of these most likely caused the cavities in the land surface?
dissolving of rocks by groundwater
The heating of groundwater forms
geysers
The diagram below shows a portion of the water cycle. What does Y most likely represent?
groundwater
Which of these surface features are formed because of the heating of groundwater?
hot springs and geysers
The information about groundwater recorded by a student is valid when
it is not biased
Manure is carried by rain water from land to a river. This is an example of
non-point source pollution
Which of these pollutants is transferred from soil to water by organic pesticides and fertilizer runoff from farms?
phosphates
The drinking water in a location in Florida had a foul odor and taste. Investigations revealed that storm water runoff had carried huge amount of soil into the water bodies in the location. What are people in the location most likely to do to prevent the water pollution?
plant trees along canals and roadways on their property to filter runoff and prevent soil erosion
"A family can save over 50,000 gallons of water per year by recycling graywater." The most reliable source of this information is a
scientific website
Groundwater leaking above the Earth's surface when the water table is close to the surface is called a
spring
Correct 17. The lake water in a local swimming location in Florida has been found to contain high levels of fecal coliform. How can people immediately protect their health in this situation?
stop swimming in the lake