Science - Pollution and Contamination | Attempts: 130

2.

What are the three types of water pollution?

Bacterial, Runoff, Chemical
Sediment, Nutrient, Bacterial
Contamination, Turbidity, Transparency

Correct Answer

A. Sediment, Nutrient, Bacterial

Explanation

The three types of water pollution are sediment, nutrient, and bacterial. Sediment pollution occurs when soil and other particles are washed into bodies of water, causing them to become cloudy and murky. Nutrient pollution refers to the excessive presence of nutrients, such as nitrogen and phosphorus, in water bodies, which can lead to harmful algal blooms and oxygen depletion. Bacterial pollution is caused by the presence of harmful bacteria, such as E. coli, in water sources, which can pose a risk to human health.

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3.

Bonus: Turbidity refers to the transparency of water. What unit do we use to measure Turbidity?

Nephelometric Transparency Unit
Turbidity Transparency Unit
Nitro Terbidometer Unit
Nephelometric Turbidity Unit

Correct Answer

A. Nephelometric Turbidity Unit

Explanation

Turbidity refers to the cloudiness or haziness of a liquid caused by suspended particles. The unit used to measure turbidity is the Nephelometric Turbidity Unit (NTU). This unit is based on the principle of nephelometry, which measures the scattering of light by suspended particles in the water. The higher the NTU value, the more turbid or cloudy the water is. Therefore, the correct answer is Nephelometric Turbidity Unit.

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4.

Water contamination falls into the following two categories:

Nutrient and Bacterial
Biological and Chemical
Osmosis and Diffusion

Correct Answer

A. Biological and Chemical

Explanation

Water contamination can be categorized into two types: biological and chemical. Biological contamination refers to the presence of microorganisms such as bacteria, viruses, and parasites in water, which can cause various diseases. Chemical contamination, on the other hand, involves the presence of harmful substances such as heavy metals, pesticides, and industrial pollutants in water, which can have adverse effects on human health and the environment. Both types of contamination are significant concerns as they can lead to waterborne illnesses and environmental degradation.

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5.

Water Turbidity is caused because:

Waste Discharge
Residues from an erosion
All of the above

Correct Answer

A. All of the above

Explanation

Water turbidity is caused by waste discharge and residues from erosion. Waste discharge from industrial and domestic sources can introduce pollutants and suspended particles into the water, making it cloudy and turbid. Similarly, erosion can result in the deposition of sediments and debris into water bodies, further contributing to turbidity. Therefore, both waste discharge and residues from erosion are responsible for causing water turbidity.

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6.

Which of the following processes can be used for water purification?

Filtration
Chlorination
Disinfection
All of the above
None of the above
#1 and #2

Correct Answer

A. All of the above

Explanation

All of the processes mentioned - filtration, chlorination, and disinfection - can be used for water purification. Filtration involves passing water through a filter to remove impurities. Chlorination is the process of adding chlorine to water to kill bacteria and other microorganisms. Disinfection refers to the use of various methods, such as UV radiation or chemical disinfectants, to kill or inactivate pathogens in water. Therefore, all three processes are effective in purifying water and removing contaminants.

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7.

Is Reverse Osmosis a Water Treatment method?

Well duh
Of course not

Correct Answer

A. Well duh

8.

Why is Reverse Osmosis not a preferred method to clean water?

Fairly slow
Expensive
All of the above

Correct Answer

A. All of the above

Explanation

Reverse osmosis is not a preferred method to clean water because it is fairly slow and expensive. Reverse osmosis involves pushing water through a semipermeable membrane to remove impurities, which takes time and slows down the overall process. Additionally, the equipment and maintenance required for reverse osmosis can be costly, making it a less preferred option compared to other more efficient and cost-effective methods of water purification.

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9.

You must be tired...here is an easy one. What is water Contamination?

It is harmful substances dissolving into water
It generally means purifying water
What are you talking about? None of these are right....

Correct Answer

A. It is harmful substances dissolving into water

Explanation

Water contamination refers to the presence of harmful substances that dissolve into water, making it unsafe for consumption or use. These substances can include pollutants, chemicals, toxins, microorganisms, or any other contaminants that can negatively affect human health or the environment. Contaminated water can lead to various health issues and environmental problems, and therefore, it is essential to ensure water purification processes to remove or reduce these harmful substances.

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10.

Water contamination affects our health because it can cause:

Liver and Kidney damage
Cancer
#1 and #2

Correct Answer

A. #1 and #2

Explanation

Water contamination can have serious health consequences. It can lead to liver and kidney damage, as well as an increased risk of cancer. Contaminants in the water, such as heavy metals and chemicals, can accumulate in the body over time and cause damage to these vital organs. Additionally, certain chemicals found in contaminated water have been linked to an increased risk of developing various types of cancer. Therefore, both liver and kidney damage and an increased risk of cancer are valid reasons why water contamination can affect our health.

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11.

What does the term "Urban Runoff" mean?

It is the term used to describe a nation collecting contaminants from water
Tsunami
Water running over areas collecting pollutants as it flows

Correct Answer

A. Water running over areas collecting pollutants as it flows

Explanation

Urban runoff refers to the process of water flowing over urban areas, such as streets, parking lots, and rooftops, and collecting pollutants along the way. This runoff can include various contaminants like oils, chemicals, fertilizers, and sediment, which are then carried into storm drains, rivers, and ultimately, bodies of water. Urban runoff is a significant source of water pollution and can have detrimental effects on aquatic ecosystems and human health.

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12.

Aeration is the method of:

Mixing or forcing air through a liquid
Adding a mixture of chemicals into water

Correct Answer

A. Mixing or forcing air through a liquid

Explanation

Aeration is the process of mixing or forcing air through a liquid. This method is commonly used in wastewater treatment plants to increase the oxygen levels in the water, which promotes the growth of aerobic bacteria that help break down organic matter. Aeration can also be used in aquariums to provide oxygen to the fish and other aquatic organisms. By introducing air into the liquid, aeration helps to improve the quality of the water and ensure the survival of living organisms that depend on it.

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13.

Final Question! Water Purification is the term used to describe cleaning water. Water Contamination refers to making water impure and unsafe. Aside from the fact that they both have to do with water, what other thing do they have in common?

Chemicals - causes contamination and CAN purify water
They both involve human activity
All of the above

Correct Answer

A. All of the above

Explanation

Both water purification and water contamination involve chemicals and human activity. Water purification involves the use of chemicals to remove impurities and make water safe for consumption. On the other hand, water contamination occurs when chemicals or other pollutants are introduced into the water, making it impure and unsafe. Additionally, both processes involve human activity as they are influenced and carried out by human actions and interventions.

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Science - Pollution And Contamination

What is the term used to describe the level of transparency of water?

Quiz Preview

What are the three types of water pollution?

Bonus: Turbidity refers to the transparency of water. What unit do we use to measure Turbidity?

Water contamination falls into the following two categories:

Water Turbidity is caused because:

Which of the following processes can be used for water purification?

Is Reverse Osmosis a Water Treatment method?

Why is Reverse Osmosis not a preferred method to clean water?

You must be tired...here is an easy one. What is water Contamination?

Water contamination affects our health because it can cause:

What does the term "Urban Runoff" mean?

Aeration is the method of:

Final Question! Water Purification is the term used to describe cleaning water. Water Contamination refers to making water impure and unsafe. Aside from the fact that they both have to do with water, what other thing do they have in common?