For example, if a buyer obtains a seven-year balloon mortgage to purchase a home, he has seven years of equal monthly payments at a fixed interest rate. This rate is often lower than what the buyer would otherwise be able to secure under a traditional mortgage loan.
When sound reflects off a special curved surface called a parabola, it will bounce out in a straight line no matter where it originally hits. Many stages are designed as parabolas so the sound will go directly into the audience, instead of bouncing around on stage.
These S-waves were expected to show up on one side of the Earth after originating on the other, but there was no sign of them. It turned out that rocks became liquid around 3000km down . The reason for this was simple. S-waves can only reverberate through solid material, and can't make it through liquid. They must have come up against something molten in the centre of the Earth. By mapping the S-waves' paths, it turned out that rocks became liquid around 3000km down. That suggested the entire core was molten.