Achange in facial expression, a pause, an altered vocal pitch or speaking rate, or a movement all may indicate a

Nonverbal transition

Explanation:

Nonverbal transition involves using nonverbal communication techniques to pass across a message effectively to an audience. They are often employed by people who engage in public speaking to ensure a good flow of conversation.  Nonverbal transition elements, such as a change I facial expression, a pause, an altered vocal pitch or speaking rate etc., are used alone or mixed together by a speaker to attract and sustain the interest and attention of the audience.

imagine a line passing through the center of earth that goes through both the north pole and the south pole. this imaginary line is called an axis. earth spins around its axis, just as a top spins around its spindle. this spinning movement is called earth's rotation. at the same time that the earth spins on its axis, it also orbits, or revolves around the sun. this movement is called revolution.