Convection is defined as the movement of air based on the differing temperatures of the air layers. The movement of this air causes an updraft at some point, since warmer air rises while cooler air sinks. This air also travels along the sky, whether its by a jet stream or just wind or some other form of air movement. This would provide the eagle or hawk to soar without flapping, since the air from underneath supports it up.
In chemistry, a chemical change is a change which involves the production of new chemical substances. Frying an egg is an example of a chemical change because of the reaction between the oil and the substance in the presence of supplied heat.
This reaction is exothermic because the system (the aqueoud solution) is transferring heat to its surroundings (the calorimeter) so this eliminates two responses. Since the heat is being transferred to the surroundings, the water that's in the calorimeter in this case, it is causing the water molecules to heat up and thus an increase in the kinetic energy of the water molecules since temperature affects kinetic energy
