When a person makes a prediction, he/she expects it to happen. It is the same as watching th eprediction unfold and prove yourself right. That's the reason people make predictions.
Dan Henderson vs. Rashad Evans Prediction
so that we can prepare in case something really bad happens like an earthquake or something.
If a scientist notices an event that continually happens due to another event or action, he can predict, If this event happens, this event will happen next.
A prediction is the strong belief that something will happen. It is said to be a true prediction if the event happens. Before the event takes place, you would have to ask the prophet/psychic making the prediction what it means. After the event, or after the prediction is proven false, you can see for yourself what it means.
my prediction about the bowling ball falling first was true.
According to the scientific method, after a scientist forms a hypothesis, he will make a prediction of the outcome of his experiment, based on his observations.
By using it to make a prediction. (The most famous was the (relativity) prediction that gravity would bend light.)
they say that it happens every second
Prediction has no special or different meaning for scientists. If what you say is going to happen happens then you are skilled at prediction.
that you will fail
Try it raw.
Hypothesis.