How do you get the earth badge on pokemonfire red?

Answer 1

Before you can get in to the Gym you need to get 7 badges.Then make your way to the Gym Leader. :3 Hope I Helped :3 Another Answer If you defeted the Saffron gym leader, Sabrina, Go to Viridian city and now you can go around the Viridian gym without the Old man stopping you because he will say to you (The Gym leader has returned!) and enter the gym and make your way to the gym leader and guess who the gym leader is? the one you've been fighting all along, Giovanni, Yes the ine who is the leader of Team Rocket. The one who devastated silph corporation. Yes that guy. and when you beat him, You will get a TM which contains Earthquake and the Earth badge which makes all pokemons in any level obey you!! cool huh!!!

Answer 2

To get the Earth Badge in Pokemon FireRed, you need to defeat the Gym Leader Giovanni in Viridian City. You can access the gym only after getting required HMs and badges. Once you defeat Giovanni, you will receive the Earth Badge, signifying your victory over all gym leaders in the Kanto region.