NC Science EOG Practice 2

Front

What is surface tension?

Back

Surface tension is the cohesive force between liquid molecules at the surface of a liquid, which allows some insects to walk on water.

Front

What is buoyancy?

Back

Buoyancy is the ability of an object to float in a fluid, determined by the object's density compared to the fluid's density.

Front

What is cohesion in water?

Back

Cohesion is the attraction between water molecules, which contributes to surface tension and allows water to form droplets.

Front

What is polarity in water?

Back

Polarity refers to the distribution of electrical charge in water molecules, making one end slightly positive and the other slightly negative.

Front

What is urban runoff?

Back

Urban runoff is water that flows over urban surfaces, carrying pollutants like oil and gasoline into water bodies.

Front

What is an economic trade-off?

Back

An economic trade-off is a situation where a choice must be made between two or more options, often involving a cost or sacrifice.

Front

What is the role of cytoplasm in a cell?

Back

Cytoplasm surrounds organelles in a cell and provides a medium for biochemical reactions.

Front

What is solubility?

Back

Solubility is the ability of a substance to dissolve in a solvent, such as water.

Front

What is the difference between point source and non-point source pollution?

Back

Point source pollution comes from a single, identifiable source, while non-point source pollution comes from multiple, diffuse sources.

Front

What is nutrient pollution?

Back

Nutrient pollution occurs when excess nutrients, like nitrogen and phosphorus, enter water bodies, leading to algal blooms.