What covers most of the Earth's surface?

What is land primarily made of?

What is a large area of salty water called?

Who is a person that travels in outer space?

What is the term for everything outside planet Earth?

Why is Earth considered a special planet?

What essential elements do humans need to live?

What shape is the Earth?

What do we call the land on Earth?

What covers most of the Earth's surface?

What is the name of the largest bodies of water on Earth?

What do we see in the sky during the day?

What do we see in the sky at night?

Where do plants grow on Earth?

Why do we need air on Earth?

What do trees provide us with?

Why is Earth special compared to other planets?

A place where rocks are dug from the ground. It is called … .

The colour of diamond is … .

It is made of very small pieces of rock. It is called … .