What indicates an object has low density?

• A. It sinks in water
• B. It is heavy and compact
• C. It is light and occupies a lot of space
• D. It is frozen

Answer: (C)

An object is considered to have low density if it is light and occupies a lot of space. Density is defined as mass per unit volume. Therefore, if an object is light, it suggests that for its size (the volume it occupies), it has relatively little mass, which results in a lower density.

In the context of this question, an object that occupies a larger volume while remaining light is indicative of low density. This is commonly seen in materials such as foam or certain types of plastics, which may take up a lot of space but are not heavy.

In contrast, other scenarios mentioned do not align with the characteristics of low density. For instance, an object that sinks in water suggests that its density is greater than that of water, while being heavy and compact implies a higher density due to the concentration of mass in a smaller volume. The state of being frozen does not inherently relate to density, as many substances can maintain varying densities in their solid state.