Which layer of the Earth is made up of solid iron and nickel?

What is the imaginary line that divides the Earth into Northern and Southern Hemispheres?

Which of the following is a renewable resource?

What is the process of water changing into vapor called?

Which continent is known as the 'Land of Kangaroos'?

Which is the largest ocean in the world?

What is the term for a narrow strip of land connecting two larger land masses?

Which gas is most abundant in the Earth's atmosphere?

What is the name of the process where plants make their food using sunlight?

Which river is the longest in the world?

What are lines on a map that join places of equal height called?

Which desert is the largest in the world?

What is the term for a large body of ice that moves slowly over land?

Which is the smallest continent by land area?

What type of forest is found in areas with high rainfall?

What is the study of weather called?

What is the main cause of tides on Earth?

Which layer of the atmosphere contains the ozone layer?

What is the term for the farming practice of cutting steps into a hillside?