MOLTEN ROCK, or magma, and gasses spew from the mouth of a volcano in the Hawaiian islands. As rock inside the earth melts, its mass remains the same while its volume increases--producing a melt that is less dense than the surrounding rock. This lighter magma then rises toward the surface by virtue of its buoyancy.
Although each automobile dealer has the option to release new models at a time it chooses, most companies release new models between September and December every year. In addition, some brands are showcased earlier in summer car shows.
1 Cars â new cars usually come out at the end of the summer, so dealers will be clearing out their lots around this time. 2  Buy at the end of the month for extra savings. 3  Lawnmowers â stores have to make room for all their winter gear, which means summer staples like lawnmowers will be on sale.