Question

1. cooler water will________, while warmer water will ______. 11. a lava lamp is an example of which type of heat transfer? ______ 12. what kind of transfer happens in a vacuum? ______ 13. heat and light travel in ______. 14. walls, floors, and ceilings ______ heat. 15. molecules in cold things move more ________ than in hot things.

Explanation:

1. Cooler water is denser and sinks, warmer water is less - dense and rises due to density differences related to temperature.
2. A lava lamp demonstrates convection, where heated wax rises and cooled wax sinks due to changes in density.
3. In a vacuum, heat transfer occurs by radiation as there are no particles for conduction or convection.
4. Heat and light travel in waves. Radiation is a form of energy transfer in the form of electromagnetic waves.
5. Walls, floors, and ceilings conduct heat as they are solid materials through which heat can transfer by direct contact.
6. Molecules in cold things move more slowly as temperature is a measure of average kinetic energy of molecules.

Answer:

1. Sink; Rise
2. Convection
3. Radiation
4. Waves
5. Conduct
6. Slowly