What is one of the roles of specific gravity in spill responses?

• A. Determining the vapor pressure of a substance
• B. Predicting if a spill will float or sink in water
• C. Identifying solvent potential in spills
• D. Measuring the temperature of a substance

Answer: (B)

Specific gravity is a crucial factor in spill responses because it helps predict whether a substance will float or sink in water. When responding to a hazardous material spill, understanding the behavior of the substance in relation to water is essential for determining containment and cleanup strategies.

Substances with a specific gravity less than 1 will typically float on water, while those with a specific gravity greater than 1 will sink. This knowledge allows responders to plan effectively; for example, if a substance is determined to float, containment measures may involve using booms or barriers to prevent spread on the water surface. Conversely, if a substance sinks, responders may need to employ different techniques, such as using specialized equipment to retrieve or neutralize the material from the bottom.

Other options relate to different physical properties or measurements that, while important, do not specifically connect to the behavior of substances in water, making them less relevant in the context of predicting a spill's movement during a response.