Which statement describes the characteristics of all transfers of heat energy? A. Heat energy always travels from warmer areas to cooler areas.

B. Heat energy transforms to chemical energy after all energy transfers.

C. Heat energy requires air to be transported from hot objects to cold objects.

D. Heat energy can only transfer between two objects of the same temperature.

How does a sample of helium at 15 degree celsius compare to a sample of helium at 215 k? a) the helium at 15 degrees celsius has a higher average kinetic energy that the sample at 215 k. b) the helium at 15 degrees celsius has lower nuclear energy that the sample at 215 k. c) the helium at 15 degrees celsius has slower- moving atoms that the sample at 215 k. d) the helium at 15 degrees celsius has smaller atoms than the sample at 215 k.