# Earth Statistics

Planetary Symbol: Surface Gravity: 9.78 m/s^2 12,753 km (7,926 miles) 24 hrs 5.98x10^24 kilograms(6.5e21 tons) 23 hrs 56 min 5,515 kg/m^3 365 days 5 hrs 146 million km (91 million miles) 23o 27" 152 million km (94.5 million miles) -89o C to 57.7o C (-128o F to 136o F) 1.0 AU 287K 1 (the Moon)

Comparative Planetary Statistics -- in table form

Comparative Orbital Statistics -- in table form

## Traveling Nitrogen Classroom Activity Kit

Check out our online store - minerals, fossils, books, activities, jewelry, and household items!...more

## What is the distance from the Earth to the Sun when the Earth is at perihelion and when it is at aphelion? At what month is the Earth closest to the Sun? What is the circumference of the Earth? How fast is the Earth moving about its axis; how about around the Sun?

Scientists use fancy words to describe things sometimes. The Earth doesn't orbit the Sun in a perfect circle. So, there is a point when the Earth is closest to the Sun and farthest from the Sun. Scientists...more

## Eccentricity of an Orbit

Do you think Earth moves around the Sun in a circle? That is almost true, but not quite. The shape of Earth's orbit isn't quite a perfect circle. It is more like a "stretched out" circle or an...more

## Albedo

This picture was taken from high above our planet. Looking at the Earth from very far away like this we can see that some parts of our planet look light in color, and some parts look dark. The color of...more

## Desert Birds

Did you know that many species of birds live in the desert? You have probably heard of the roadrunner or seen the cartoon. The roadrunner is a real bird that lives in the desert! It prefers to run rather...more

## The Desert Biome

Deserts are very hot and dry places. Deserts get very little rain each year. So how do plants and animals live here? This section on the desert ecosystem will explain how! Do you know what a desert looks...more

## Desert Insects and Arachnids

There are all kinds of insects in the desert! Some of them cause a lot of problems. The locusts fly from place to place, eating all the plants they see. But not all desert bugs are bad. There isn't a...more

## Desert Mammals

There are many species of mammals in the desert! Many of them dig holes in the ground to live in. These holes are called burrows. Rats and hamsters live in burrows. Bigger mammals, like the wild horse,...more

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