3. Which of the following has a faster movement of molecules? A. hot materials C. cold materials B. warm materials D. room temperature materials 4. Which of the following has a lesser density in a convection cell? A. warm fluid materials C. room temperature fluid materia B. cold fluid materials D. hot fluid materials
Answer (1)
3. The materials that have a faster movement of molecules are A. hot materials. Why? Because hot materials have more energy, so their molecules move faster compared to cold ones.4. The materials that have a lesser density in a convection cell are D. hot fluid materials. Why? Because hot fluids are lighter because the molecules are spread out, so they rise and have lower density.
