Most Roller Coasters start with a chain or powered launch.
The noun 'roller coaster' has no standard collective noun since most roller coasters are not in a group. However, a collective noun is an informal part of language. Any noun the fits the situation can function as a collective noun; for example, a scream of roller coasters, a maze of roller coasters, a park of roller coasters, a tour of roller coasters, etc.
Cedar Point in Ohio, and Six Flags Magic Mountain in California both have 17 roller coasters each, the most roller coasters at any amusement park in the world.
Vekoma is a roller coaster company, and makes hundreds of roller coasters. They are most noted for their boomerangs however, which are located at most parks around the world (such as Sidewinder at Hershey Park or Carolina Cobra at Carowinds).
North America
All roller coasters have at least one hill and one drop. Most roller coasters also have turns as well. Inversions (going upside down) is typical on steel coasters and rare on wooden ones. Their is always some way to start a roller coaster, a chain or hydraulic launch systems are some. Brakes are on every roller coaster as well.
I would say most do but every teenager is different. If there are afraid of heights or motion they will certainly hate roller coasters
United States
Disneyland California has the most rides.
theres probably tons of roller coasters called Corkscrew, but the most famous one is at Cedar Point, In Sandusky, Ohio. it was also the first roller coaster ever to include a corkscrew
some roller coasters will let you but most are not you might get kicked out.
Most, if not all, roller coasters are powered by electricity. Most electricity is still being generated by burning of fossil fuels (coal, oil and natural gas). As this burning emits carbon dioxide you can clearly say that roller coasters are contributing to global warming by using fossil fuels.