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1. How many continents does Earth have?
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Five
Ten
Seven
2. What formed the Grand Canyon?
The Grand Canyon is in Arizona. It was formed by the Colorado River. It is millions of years old. The Grand Canyon has amazing sights.
An earthquake
The Colorado River
The Pacific Ocean
3. Why are the White Cliffs at Dover white?
The White Cliffs are in England. They are white from seashells and sea creatures. They were formed millions of years ago. The cliffs are ten miles long.
From volcanic ash
From seashells and sea creatures
From quartz, a type of rock
4. What is the tallest mountain above sea level on Earth?
Mount Everest is the tallest mountain above sea level. It is in the Himalayas. It slowly grows taller each year.
Mount Everest
Denali
Mount Kilimanjaro
5. Which continent is the largest?
Asia is the largest continent in the world. Asia has deserts, tundra, and tropical beaches. It is also home to two-thirds of the people on Earth.
Asia
North America
Africa
6. What is so big that it can be seen from space?
The Great Barrier Reef is a large coral reef. It is the largest living structure in the world. It can be seen from space. It is home to twenty-five percent of ocean life on earth.
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