Its the wheels that are different. Outdoor wheels do not have the grooves, which means you don't feel as many bumps outdoors. Indoor wheels have grooves, which helps you run smoother. If you wore indoor wheels outdoors, you would feel every little bump and pebble. Plus, outdoor terrain with indoor wheels wrecks the wheels.
Small wheels have little rolling friction and helps to move faster in Skates
there are 4 wheels in an in-line skate
Yes.
Four----- A+
five
James Plimpton invented the roller skates with 4 wheels
no
Meals on wheels
Some skates have smaller wheels. These are generally on artistic style skates. I believe the idea behind it is that they have less surface area on the floor to slide better when twirling and such to be more similar to ice skating styles. They are also less likely to collide with each other and lock up. If you don't think you like this kind, look into speed skates. They have the larger wheels and are popular right now.
I guess if you took off the blade and put on wheels you could but you cannot roller skate in ice skates
Yes spitfire wheels are the best wheels you can get they last you a long time and the don't get flat spots very easily I recomend these wheels to anyone who skates