Water Quality Indicators

What is the importance of monitoring water quality?

• It helps in reducing water usage.

• Monitoring water quality is essential for protecting ecosystems and human health.

• It increases the cost of water supply.

• It has no significant impact on the environment.

What can be concluded if a body of water has low levels of dissolved oxygen?

• The water temperature is high.

• The water is heavily polluted.

• The water is very cold.

• The water is rich in nutrients.

What is a bioindicator?

• A species that can survive in any environment.

• A species that depends on specific conditions to survive.

• A species that is always harmful to its ecosystem.

• A species that has no impact on its surroundings.

What is turbidity?

• The temperature of a fluid

• The cloudiness or haziness of a fluid caused by large numbers of individual particles.

• The pH level of a fluid

• The viscosity of a fluid

What is dissolved oxygen?

• The amount of oxygen present in water, essential for aquatic life.

• A type of oxygen that is found in the atmosphere.

• Oxygen that is produced by plants during photosynthesis.

• Oxygen that is used in the process of respiration.

What is the relationship between salinity and water density?

• Higher salinity decreases the density of water, affecting buoyancy and aquatic life.

• Higher salinity increases the density of water, affecting buoyancy and aquatic life.

• Salinity has no effect on water density or aquatic life.

• Lower salinity increases the density of water, affecting buoyancy and aquatic life.

How can heavy rainfall affect water quality?

• It can increase the temperature of water bodies.

• It can lead to runoff that carries pollutants into water bodies.

• It can decrease the levels of dissolved oxygen in water.

• It can purify water by flushing out contaminants.

What is a watershed?

• A watershed is an area of land that drains into a particular water body.

• A watershed is a type of water purification system.

• A watershed is a geographical term for a mountain range.

• A watershed is a method of measuring rainfall.

Why is measuring the salinity of water important?

• It helps in determining the temperature of water bodies.

• It is essential for assessing the density of water bodies.

• It indicates the presence of pollutants in the water.

• It measures the amount of dissolved oxygen in water.

What is potable water?

• Water that is safe to drink.

• Water that is contaminated and unsafe.

• Water that is used for irrigation.

• Water that is only available in bottled form.