Roller coasters have been a popular attraction at amusement and theme parks for over a century. Roller coasters are often called "scream machines" because just one look at them makes it obvious why they earn this nickname. Roller coasters provide thrilling rides that cause passengers to scream due to fast speeds, steep drops, and dramatic turns.

1. Roller coasters

2. Roller Coasters have been the " must ride " attraction at amusement & theme parks for more than a century. With just one look, it's obvious why roller coasters are often called "scream machines".