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.
Seismic waves travel through the earth during an earthquake. They occur when stress at a plate or other regions on the earth is released. Waves that travel through the crust are called surface waves. These cause most of the damage associated with earthquakes. Waves that travel through deeper layers are called body waves.