Sewage and refuse disposal - JSS1 Physical and Health Education Past Questions and Answers - page 2
What is groundwater accessed through?
Rivers
Reservoirs
Wells
Rainwater harvesting systems
What is rainwater harvesting?
Cleaning wastewater before releasing it
Collecting and storing rainwater for later use
Removing salt from seawater
Processing waste materials to make them usable again
What does desalination do?
Harvest rainwater
Remove contaminants from groundwater
Turn organic waste into soil
Remove salt from seawater to make it drinkable
Why is clean water important for agriculture?
For cleaning industrial equipment
For supporting wildlife in rivers
For growing crops and raising livestock
For generating energy in incineration plants
Which of the following is an example of how water supports the environment?
Used in cooling systems in industries
Bacteria breaking down waste in sewage treatment
Serving as a habitat for many species in rivers and lakes
Removing salt from seawater in desalination
What is the purpose of a sewage treatment plant?
The purpose of a sewage treatment plant is to clean wastewater before releasing it back into the environment. The treatment process typically involves primary treatment to remove large particles and solids, secondary treatment using bacteria to break down organic matter, and tertiary treatment to remove any remaining contaminants.
How does composting benefit the environment?
Composting benefits the environment by turning organic waste, such as food scraps and yard waste, into nutrient-rich soil. This process reduces the amount of waste sent to landfills, decreases methane emissions, and provides a natural fertilizer that enhances soil quality and supports plant growth.
What are some common sources of water supply for human use?
Common sources of water supply for human use include surface water from rivers, lakes, and reservoirs; groundwater from underground aquifers accessed through wells; rainwater collected and stored through rainwater harvesting systems; and desalinated water obtained by removing salt from seawater.
Why is clean water essential for human health?
Clean water is essential for human health because it is necessary for drinking, which helps in digestion, nutrient absorption, and maintaining body temperature. It also plays a crucial role in sanitation and hygiene practices, such as washing hands, bathing, and cleaning, which help prevent diseases and maintain overall health.