No.
Cracking takes longer chain molecules and makes smaller ones. That is where the name comes from, the molecules are cracked apart into smaller ones.
Uh...no. Look up how ethylene is made. Ethane and propane are typical feedstocks and resultant cracked materials are ethylene, propylene, butylene, benzene, toluene, etc. etc. down to about C20. The units that make these products are colloquially also called crackers. I think the term cracking has nothing to do with the direction of the new created carbon size, but more the "cracking" of the bonds to may new chemicals.