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Most of the Earth's surface (70%) is covered with water, and the remaining 30% is taken up by the seven continental landmasses. However, underneath the water that fills the oceans, and the dirt and plants that cover the continents, the Earth's surface layer is made of rock. This outer layer formed a hard, rocky crust as lava at the surface cooled 4.5 billion years ago.
The crust is broken into many large plates that move slowly relative to each other. Mountain ranges form when two plates collide and their edges are forced up. In addition, many other surface features are the result of the moving plates. The plates move about one inch per year, so millions of years ago the continents and the oceans were in different positions. About 250 million years ago, most of the land was connected together, and over time has separated into seven continents.
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∙ 10y ago
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What rock makes up 90 percent of the earth's crust?
Igneous rock comprises the majority of Earth's crust.
How much surface area does the earth have?
the surface of the moon is 0.074 of earth's surface area
Is crust under the surface of the Earth?
the crust is the surface of the earth
Why can weathering can only. Occur on the surface of the earth?
Weathering can only occur on the surface of the earth because the weather is only present on the surface of the earth. The surface of the earth refers to any exposed area.
What is the layer of rock that comprises 67 percent of earth's mass?
The mantle.
Were does America rank in size of the world?
North America comprises 4.8% of the earth's surface
What is earth mostly made out?
The earth is mostly made up of the element iron, which comprises 32% of the planet. An interesting fact about the composition of the earth is that 70% of its surface is covered with water.
How is earth a system?
Earth comprises of various components. It acts as a system.
Is earth a system?
Earth comprises of various components. It acts as a system.
Is it true that all of Antarctica might melt and nothing will be left of it?
Antarctica is a continent, one of seven on earth and its soil comprises about 10% of the earth's surface. The vast ice cap on Antarctica could melt, but continents do not melt.
The mantle comprises what percentage of earth's mass?
67% A+
Is most of the earth's atmosphere nitrogen?
Yes Earth's atmosphere comprises 78% Nitrogen.
How many percent of oxygen comprises on weight of earths continental crust?
Oxygen comprises about 47% by weight of Earth's crust
What percent of the makeup of the earth is the crust?
The crust comprises less than 1% of the Earth's total volume.
Why is earth favorable to sustain life?
Earth comprises of atmosphere. Air and water provides favorable conditions.
What is a symbolic representation of the earth's surface or part of the earth surface called?
A symbolic representation of the earth's surface or part of the earth surface is called map.
What rock makes up 90 percent of the earth's crust?
Igneous rock comprises the majority of Earth's crust.
