Environmental Science Quiz

What happens to the mass of a substance during a physical change?

• The mass of a substance remains constant during a physical change.
• The mass of a substance disappears during a physical change.
• The mass of a substance increases during a physical change.
• The mass of a substance decreases during a physical change.

A colorless, odorless gas that decreases the blood's ability to carry oxygen. Can cause faintness, death.

• Nitrogen dioxide
• Sulfur dioxide
• Hydrogen peroxide
• Carbon monoxide

What are the pollutants known to cause acid rain?

• Ozone and particulate matter
• Carbon monoxide and methane
• Sulfur dioxide (SO2) and nitrogen oxides (NOx)
• Lead and mercury

Dirt, sand and silt are classified as what type of pollution?

• Garbage pollution
• Air pollution
• Noise pollution
• Land pollution

What is algal bloom?

• A rapid increase in algae population in water bodies due to excessive nutrients.
• A decrease in water temperature in aquatic environments
• An increase in fish population in water bodies
• A sudden decrease in algae population in water bodies

What is the chemical formula for hydrochloric acid?

• HCl

• H₂SO₄

• NaOH

• CH₃COOH

Which of the following is a common source of nutrient pollution in water bodies?

• Pesticides

• Heavy metals

• Fecal coliform bacteria

• Fertilizers

What is the main use of natural gas?

• Transportation fuel

• Electricity generation

• Manufacturing plastics

• Agriculture

Which of the following statements is true about the greenhouse gas emissions from natural gas combustion compared to coal combustion?

• Natural gas combustion produces more greenhouse gases

• Natural gas combustion produces fewer greenhouse gases

• Natural gas combustion and coal combustion produce the same amount of greenhouse gases

• Natural gas combustion does not produce greenhouse gases

Which of the following salts is commonly known as table salt?

• Sodium chloride (NaCl)

• Calcium carbonate (CaCO₃)

• Potassium nitrate (KNO₃)

• Magnesium sulfate (MgSO₄₎