Science DBA Review

Front

What is a way humans positively impact surface water?

Back

Humans can positively impact surface water by treating water for reuse or cleaning it before it reaches lakes, ponds, or rivers.

Front

What does the subscript in a chemical formula represent?

Back

The subscript represents the number of each atom in the molecule.

Front

What is the effect of groundwater on pollution in lakes?

Back

Groundwater can carry pollution from wetlands directly into lakes, potentially harming the ecosystem.

Front

How many atoms of oxygen are in the chemical formula C6H12O6?

Back

There are 6 atoms of oxygen in the chemical formula C6H12O6.

Front

Which substance has the highest concentration when 15 g of solute is added to 30 mL of water?

Back

Substance D has the highest concentration.

Front

What is the role of plant roots in protecting lakes from pollution?

Back

Plant roots can help filter and stop pollution from entering lakes.

Front

What is permeable concrete used for?

Back

Permeable concrete is used to reduce runoff to surface water.

Front

What happens to grass clippings swept into the sewer drain?

Back

Sweeping grass clippings into the sewer drain can negatively impact surface water quality.

Front

What is the definition of a coefficient in a chemical equation?

Back

A coefficient indicates the number of molecules or atoms of a substance in a chemical reaction.

Front

What is the importance of buffers in agriculture?

Back

Buffers of plants and trees filter water before it enters surface water, helping to reduce pollution.