what continents have some of their land mass in the southern hemisphere
Southern Hemisphere The Southern Hemisphere is the half sphere of Earth which is south of the equator. It contains all or parts of five continents[1] (Antarctica, Australia, about 90% of South America, the southern third of Africa, and several southern islands off the continental mainland of Asia), four oceans (Indian, South Atlantic, Southern, and South Pacific) and most of the Pacific Islands in Oceania. Its surface is 80.9% water, compared with 60.7% water in the case of the Northern Hemisphere, and it contains 32.7% of Earth's land.[2]
Continent North America and South America are treated as separate continents in the seven-continent model. However, they may also be viewed as a single continent known as America or the Americas. This viewpoint was common in the United States until World War II, and remains prevalent in some Asian six-continent models.[11] This remains the more common vision in Latin American countries, Spain, Portugal, France, Italy and Greece, where they are taught as a single continent.