No. It's the other way around. You need spider ball to get power bombs. Spider ball is the first the first item you get in Sanctuary Fortress.
There is no Metroid Prime 2: Corruption. Metroid Prime 2 is called "Echoes" and Metroid Prime 3 (THREE) is Corruption. You get it after you defeat the power bomb gaurdien in dark torvus bog at the same place where you fought the alpha bog (or whatever he's called) in light torvus bog. But you need spider ball before you can fight him.
After you get the Thermal Visor,go to Quarantine cave. Battle Thardus, once you beat him he will explode and the Spider Ball will pop out
go to the containment zone in the ice place, and kill the giant rock monster
You need to get the spider ball upgrade later in the game. Use the probes and they will update your map with all the hidden collectibles.
If you mean how to unlock item locations, in eastern skytown, there is a room with a lot of Satellites. You will need the spider ball to launch all of them.
There are 3 keys to the temple:One is in a spider ball maze in the wall of Culling ChamberOne is at the top of the spider ball structure in Hive Gyro ChamberOne is in Aerial Training Site, but it can only be obtained by entering through the door in Central Hive West Transport.
You have to lay a Morph Ball bomb next to the block.
After you get the spider ball in sanctuary fortress, head over to the lowest level of the Torvus Swamp where you fought the Omega Blogg and use the spider ball to get up to a portal in that room. then, enter the portal and you will fight a power bomb throwing plant. Kill it to get the power ball.
only in morph ball/screw attack/cut-scenes
in the chozo ruins, you go into a room with a half pipe and then you kill a bunch of beetles and finally a beetle with a hard shell around its head that u must jump around it and shoot its tail (:
the hyper ball is needed. when your in morph ball get on to his hands, go into hypermode and release phazon via hyper ball.
The standard morph ball bomb is in the agon wastes, you need to go to the arena. The power bomb upgrade is in dark aether, i believe it is in torvus. It is guarded by a flower that spits out power bombs (suprise!)