True or False: The Earth is the second-closest planet to the sun.

Where was the coldest-ever temperature on Earth recorded?

What is the name for the process by which plants use sunlight to get their energy?

About how old is the Earth?

True or False: There was no water on the Earth’s surface when it first formed.

Scientists are fascinated by Yellowstone National Park—and worried about it. That’s because Yellowstone is…

True or False: There are more grains of sand on Earth than there are stars in the sky.

What is the deepest point on Earth?

The name “Earth” comes from the Old English word “eorthe”, the Old Germanic word “erda”. What do they mean?

What is the leading theory for how the Moon came to be formed?

What causes a lightning strike?

Roughly how fast do Earth’s tectonic plates move?

The tallest known tree on Earth is in which U.S. state?

True or False: The Earth’s rotation is slowing down.

What is the best place on Earth to find meteorites?

What is “The Greenhouse Effect”?

What is the longest mountain-range on Earth?

Which of these scientists did NOT help to prove that the Sun is the centre our solar system, and that the universe is not centred around the Earth?

What is the most common element in the air we breathe?

True or False: The Earth’s mantle (that’s the gooey bit near the center) is roughly the same temperature as the sun.

Some Earthlings manage to survive in incredibly hostile environments, like the bottom of the ocean, or inside of an active volcano. What do scientists call these resilient organisms?

The Earth isn’t a true sphere. What is the technical term for it’s true shape?

True or False: Earth’s sea-levels are going down.

What is the longest river on Earth?
