That is correct. They produce from the sun's corona -Claudia0
The epicenter of an earthquake is the central point on the Earth's surface directly above the point within the Earth where the earthquake actually occurred (known as the focus or hypocenter). From this point on the surface the waves of the earthquake propagate outward like the ripples on a pond when a stone is thrown in.
no, they move outward from the focus, that's inside the earth.
a satellite in orbit; it is moving at constant speed but is accelerating outward in circular acceleration, balanced by gravity acceleration (centripetal force).
They rub together and send shock-waves outward from the epicenter due to friction between the two plates.
It's called a brim.brim: a circular projection that sticks outward from the crown of a hat