Here's a rundown of 20 roller coasters in Central Florida's theme parks, arranged by park and from newest to oldest:

BUSCH GARDENS TAMPA

• SheiKra: What makes SheiKra so spectacular? It's got a 90-degree drop -- 20 stories, straight down -- at 70 mph, then a second, shorter one through an underground tunnel. Called a dive coaster, it was the first of its kind in the nation when it opened in 2005. Two years later, Busch Gardens removed the floor from the trains -- and the feet-on-the-ground sense of stability. It has only one inversion: an Immelmann loop, a simultaneous loop and roll. Height: 200 feet; top speed: 70 mph; inversions: 1; length: 3,188 feet; ride time: 3 minutes; year opened: 2005.

• Gwazi: Riding Gwazi, I finally understood the expressions ``teeth-rattling'' and ``bone-jarring.'' Gwazi is a double wooden coaster that features steep drops, horizontal loops and sudden dips, but never turns upside down. If ``air time'' -- when your butt loses contact with the seat -- is the charm of traditional wooden coasters, Gwazi is the king of charm. Height: 95 feet; top speed: 50 mph; inversions: 0; length: 3,400 feet; ride time: 2 minutes, 30 seconds; year opened: 1999.

• Montu: Seven inversions, including a zero-gravity roll, a G-force of 3.85, and feet dangling free -- all rolled into this coaster. As the train reaches the top of the climb, it swerves to the side and we're flying, feet swinging, before we flip upside down. ``My heart was beating sooo fast when we were in line,'' the 10-year-old boy next to me volunteers. ``What did your heart do when we went over the top,'' I ask. ``There wasn't time for it to do anything,'' he says, still looking dazed. Height: 150 feet; top speed: 60 mph; inversions: 7; length: 3,983 feet; ride time: 3 minutes; year opened: 1996.

• Cheetah Chase: Unlike Busch Garden's other coasters, which were custom-designed for the space they were to fill, Cheetah Chase is more like a giant off-the-shelf toy. It spent its first eight years at Busch Gardens in Williamsburg, then moved to Tampa in 1996. It is a ``wild mouse'' coaster whose thrill comes from a fast series of hairpin turns, back and forth on a mostly level rectangular platform, rather than steep climbs and dives. Heads up: Those 180-degree turns are not kind to a sensitive stomach. Height: 46 feet; top speed: 28 mph; inversions: 0; length: 1,214 feet; ride time: 1 minute, 50 seconds; year opened: 1996.

• Kumba: According to Busch Gardens, kumba means roar in the Congo, and this coaster roars. Filling the metal supports with sand would calm the vibrations, so these supports were left empty, and the vibrations escalate into a roar as the trains tear along the track. Kumba turns riders upside down seven times, including a dive loop, a zero-gravity roll and a spiral that produces three seconds at zero gravity. Height: 143 feet: top speed: 60 mph; inversions: 7; length: 3,978 feet; ride time: 2 minutes, 54 seconds; year opened: 1993.

• Scorpion: Busch's oldest coaster seems tame in comparison to the newer ones. It has only one inversion -- a 39-foot-tall vertical loop -- and a top speed of 50 mph, but with a 60-foot drop and a G-force of 3.5, it's still a kick. Height: 65 feet; top speed: 50 mph; inversions: 1; length: 1,805 feet; ride time: 2 minutes, 15 seconds; year opened: 1981.