The top black section represents the black-skinned original people of Australia. The red section at the bottom represents the earth, and the yellow circle represents the sun. Both of these flags use picture symbols to stand for things that are important to the Australian people. There are many symbols used in Australia, and the ones on their flags are just a few of them. English is the official language of Australia, but many words and phrases are quite different from what one might hear in the United States.
Resources used include various internet sites as well as numerous books.