What is the outermost layer of the earth called?

What is the layer closest to the earth?

Zero degrees latitude is also known as____________

This layer protects us from meteorites entering the atmosphere:

A line of a map that connects points of equal elevation

At the very center of the earth you will find the:

The earth's atmosphere is held in place by

Zero degrees longitude is also known as___________

Scientists have only been able to dig as deep into this layer:

The difference in elevation between two side by side contour lines (Ex. 10 meters)

The layer of the earth under the crust that is described as thick "road tar is called the:

What is the most abundant gas in the atmosphere

Imaginary lines that circle that earth from east to west are lines of__________

Planes can fly in this layer of the atmosphere

What is the height above a given level, especially sea level.

This layer of the earth is just beneath the mantle and is known as the :

The outermost layer that merges with space is the______________

Imaginary lines that circle the Earth from north to south are lines of__________________

A) This layer protects us from absorbing ultraviolet radiation from the sun.
B) Which layer of the atmosphere is this other layer in?

When the contour lines are close together, the slope is __________

This layer of the earth is a solid ball of iron and very hot

List the five layers of the atmosphere in order starting from the layer closest to the earth to the outermost layer.

A. 2 lines that never meet are called______________
B. Lines that go up and down are known as_________

What is the 4th layer of the atmosphere?

When the contour lines are far apart, the slope is _________.