because it travels in and around my mouth
The Earth's orbit is almost circular. Technically, the "eccentricity" of the orbit is about 0.0167.
Venus has the orbit closest to a circular orbit. Neptune's is not too bad also. Look for low' eccentricity' rating, the closer to zero the more circular.
I'll assume you mean: "... as opposed to a circular orbit". That is caused by the fact that for a circular orbit, a planet needs a VERY PRECISE SPEED. Change the speed slightly (at a particular point in the orbit), and the orbit immediately becomes elliptical.
It is called the Earth's ORBIT around the Sun.
No, the electrons orbiting an atom have multiple levels.
In circular orbit around the nucleus.
...that electrons orbit the nucleus in circular orbits.
Niels Bohr
Venus has the almost circular orbit.
circuitous path orbit
That would be it's orbit. The moon orbits the earth in roughly a circular path.
The electric force between the negatively charged electrons and the positively charged nucleus in an atom provides the centripetal force needed to keep electrons in orbit. This force balances the tendency of the electrons to move in a straight line due to their inertia, thus maintaining their circular motion around the nucleus.
No planet has a perfectly circular orbit, though Venus has the least orbital eccentricity of any planet in our solar system.
The force that keeps electrons in orbit around the nucleus is called the repelling force of gravity. If there was no gravity the electrons would never stay in orbit but would be floating around in space.
An eliptical orbit. In theory a planet could also have a circular orbit, but no planet that we know of has a perfectly circular orbit, although some have a nearly circular orbit.
Neils Bohr assumed that electrons follow circular orbits in his model of the hydrogen atom. However, this was later proven to be incorrect, as electrons travel as waves and are not restricted to two-dimensional motion. They occupy three-dimensional space and do not have circular orbits.
Repelling Force of Gravity