Earth Learning
Natural resources are anything found on earth and in the ground that can be used by humans to make cool things. There are two types of natural resources: renewable and nonrenewable. Renewable resources (water, wind, grass, trees, etc...) can be renewed in the lifespan of a human, nonrenewable (ores, gems,
Geography
Earth's outermost layer (the lithosphere) is broken up into big pieces called tectonic plates. These plates move around very slowly over the asthenosphere, a layer of softer rock under the plates. On average, tectonic plates move a few centimeters a year. The place where two plates meet is
Earth Learning
The rock cycle is used to explain how rocks form and change over time. Rocks that are pushed below the surface of the earth and melt are known as magma. When this reaches the earth's surface through volcanic activity, magma is known as lava. Igneous rocks form when
Earth Learning
A current is a steady flow of a water or air inside a larger body of water or air. Prevailing winds are currents of air that blow in mainly one direction. The pattern of prevailing winds is caused by the uneven heating of the earth. When prevailing winds blow over
Earth Learning
Weather refers to the state of the atmosphere regarding heat or cold, wetness or dryness, calm or storm, clearness or cloudiness. There are three major factors in the weather, temperature, rain, and wind. The weather changes when air masses move around. An air mass is a large body of air,
Earth Learning
The water we drink right now is approximately as old as when the world was created. The way this is possible is because it is recycled through the water cycle. This cycle explains how water moves between the Earth’s surface and the atmosphere. This movement occurs by different processes:
Earth Learning
Our solar system is formed by two groups of planets, inner planets and outer planets, that orbit the sun, the center of our solar system. The inner planets are called "terrestrial" because they are made of a rocky substance. They are Mercury, Venus, Earth, and Mars. 1. Mercury
Earth Learning
The Earth's axis is tilted 23.5° to the east. As Earth moves around the sun, different parts of Earth point towards or away from the sun. This causes the different seasons. When the north hemisphere is tilted towards the sun, it is summer there. When it is
Earth Learning
We all know that the sun is the center of our solar system, but in the Middle Ages, people believed that the earth was the center. Models are a way to help us explain patterns that we see. When early astronomers looked into the night sky, they saw stars and
Earth Learning
This image shows that Japan is on the Fire Rim of the Pacific. This is a place where many earthquakes and tsunamis happen from the collisions or movements of two or more tectonic plates. Because of this imminent danger, Japanese architects have designed buildings that can withstand tsunamis and sway
Earth Learning
Hurricanes are giant storms that can be up to 600 miles in diameter and have winds speeds that are 75 to 200 mph. Hurricanes gather heat and energy because of contact with warm water in the oceans. When seawater evaporates, it increases its power. Hurricanes most of the time rotate
Earth Learning
Whenever a thunderstorm happens, lightning sometimes flashes and thunder booms overhead. Today I are going to cover how lightning forms and what it is. Lightning usually forms when there are many small pieces of ice in a cloud. When they bump into each other, they create a positive electric charge.