Get started!

  • Stage 1

    Answer 5 out of 6 questions correctly.

When viewed from space, Earth looks like a blue planet. This is because water covers nearly three-quarters of Earth's surface!
Water makes life on Earth possible. Every living organism, from bacteria to humans, needs water to survive. Water's chemical structure results in properties that are critical to maintaining life's processes. For example, water is an excellent solvent capable of dissolving many different substances. As water travels through an organism, it carries minerals and nutrients needed for the organism to survive.
A satellite image of Earth showing North America, Central America, and surrounding oceans.
"The western hemisphere of the Blue Marble" by NASA’s Earth Observatory / Public domain
Select the true statements.
ref_doc_title.

Confetti

Jumping to stage 1 of 1

Excellent!

Now entering the Challenge Zone—are you ready?

Teacher tools