Earphone definition, a sound receiver that fits in or over the ear, as of a radio or telephone. See more.
Answer Wiki. If a rocket went straight up, it would either continue in that direction and leave Earth, or it would fall back down, depending on its velocity. Most rockets intend to enter orbit, which is an elliptical trajectory, and it's much more efficient to arc into this trajectory than to go straight up and then accelerate laterally.
In true point of fact, the Sun doesn't really rise anywhere; the Sun fundamentally remains in the middle of the solar system. The Sun APPEARS to rise, because the Earth is spinning; the Sun (and Moon, and stars, and everything else) seem to rise in the East, because the Earth is spinning from west to east.