As the comet slows down, energy is lost from the system. As the kinetic energy of the system increases, the gravitational potential energy of the system decreases. As the comet's kinetic energy increases, the gravitational potential energy of the system also increases. As the comet slows down, the kinetic energy of the system decreases. External work must be done on the system to speed up the comet.

igneous rocks also form where plates converge. the subducting plate melts as it sinks into the crust of the earth, and the melt rises into the overriding plate forming volcanoes. metamorphic rocks are formed mainly in the lithosphere, wherever there is high pressure and high temperature. -woods

the journeys of marquette, joliet and la salle a) new france expand.

all three of these explorers explored the midwest and the area around the great lakes, which they subsequently claimed for france.

this was a big portion of territory and expanded new france which before then only consisted of quebec province in northeastern canada