Well, I looked at internet and both are used equally. I have changed the answer a bit so that it shows Blue Planet as it is used more in Modern Science. But Green is also accepted as it was used anciently. And, when it comes to Eurasia, here landmass is referred to continent. But, I added Eurasia as type ins.
Don't get confused by Quizmaster's The Earth Quiz. There is a huge difference between these two quizzes.