That depends what exactly you want to model; what you want to use the model for. In the simplest case, you can take a ball, an orange, or some other round object, and say "This represents planet Earth".
In the heliocentric model, the sun is at the center of our solar system and the earth is the third planet that orbits it.
Earth is the third planet from the Sun. The planet that we live on is called Earth.
NO
Earth is the only planet known by us to support life.
monika castillo
Earth is a rock, a non gaseous planet, but earth has an atmosphere comprising of air, a mixture of gases. This does not make it a gas planet. Gas planets have the whole mantle as gas, but earth does not have a gas mantle.
Viewed from Earth, Venus is the brightest planet.
well you can make amap, globe ,a model of a state or continent or a planet
Venus
Well, they have these things called globes, and it actually is a detailed model of the Earth. Earth is made of ground and water.
It is one of a few that are able to support living organisms.
THAT QUESTION DOES'NT MAKE SENSE ... Planet Earth IS a planet ... JUST PASS THE 2CND GRADE AND YOU'LL KNOW OT ok ) Thanks for using Wikipedia.com