describe the surface of the planet earth

Constructive forces cause landforms to grow. It is the only terrestrial planet with a liquid outer core that surrounds a solid, dense inner core. The Earth's crust is the thinnest of these layers while the mantle comprises 84% of Earth's volume and extends 1,800 miles (2,900 km) below the surface. Seasonal cues tell Arctic animals when to migrate, when to mate, and when and where to find food. Three-quarters of its surface is covered with water. Volcanic explosions or collapses have destroyed volcanic mountains to form craters. By the Archean, the planet was covered with oceans and the atmosphere was full of water vapor, carbon dioxide, nitrogen, and smaller amounts of other gases. The continents are large land areas extending from high mountaintops to sea level. 10 Laika the dog was the first Earthling to orbit Earth aboard the Soviet Union's Sputnik 2 in 1957. Of the four terrestrial planets, Earth is the largest, and the only one with extensive regions of … Mercury seems to have formed in conditions much more reducing—i.e., those in which oxygen was scarce—than other terrestrial planets. Destructive forces wear landforms down. All of the planets, except for Earth, were named after Greek and Roman gods and goddesses. Sediments are deposited to form landforms, such as deltas. Crustal deformation—when crust compresses, pulls apart, or slides past other crust—results in hills, valleys, and other landforms. Because of its relative proximity to Earth, it is the largest planet seen in the night sky. New research reveals that Pluto's ice caps are created through an entirely different process than ice caps on Earth. 10 Need-to-Know Things About Our Home Planet Although the ocean basins begin where the ocean meets the land, the continent extends downward to the seafloor, so the continental margin is made of continental crust.The ocean floor itself is not totally flat. Temperature: 4,300 K (4,030°C) in the outer regions to 6,000 K (5,730°C) closest to the … Earth is a terrestrial planet with liquid water covering roughly 70 percent of its solid surface. The iconic Planet of the Apes film (and many sequels) takes place in a future in which astronauts "discover" a planet inhabited by highly intelligent apes and primitive humans, only to realize later, much to their dismay, that—spoiler alert!—it was Earth all along. Earth's surface is in a constant state of change due to factors such as convection currents, plate tectonics, and erosion. 9 Of all of the planets that have been found, Earth is the only one known to support life. Earth makes a complete orbit around the sun (a year in Earth time) in about 365 days. The Earth’s surface is constantly changing. This planet is just right for living things. Landslides erode the steep volcanoes. NASA has selected two SmallSat missions to share a ride to space in 2025 with the agency’s Interstellar Mapping and Acceleration Probe. The water is 3% fresh and 97% salted. About 70.8% of the surface is covered by water, with much of the continental shelf below sea level. A day on Earth is 24 hours. Although larger than the other inner planets, Earth is much smaller than the gas giants found in the outer solar system. Our home planet Earth is a rocky, terrestrial planet. Sentinel-6 Michael Freilich, the latest in a series of spacecraft designed to monitor our oceans, is ready for launch. These changes mostly occur in very minute ways which over time accumulates to create the earth’s physical features we observe around us today. Earth is the only planet known to support life and to have liquid water at the surface. A day on Earth is 24 hours. For instance, the hottest temperature ever recorded on Earth … Third Rock Director, NASA Planetary Science Division: Measurement: The average surface temperature on Earth is approximately 14°C; but as already noted, this varies. Fractures caused by the rifting in the valley are signs that the valley is breaking apart. She did not survive the trip. Set for launch in November, the Earth-observing satellite will closely monitor sea level and provide atmospheric data. The name Earth is at least 1,000 years old. Earth is a terrestrial planet. What makes Earth the densest of these planets, however, is its core. Earth orbits our Sun, a star. The density of Earth’s surface layers is much less than the overall density of the planet, as calculated from the planet’s rotation. Some of these changes take thousands of years. Earth is the third planet from the Sun and the only astronomical object known to harbor life.About 29% of Earth's surface is land consisting of continents and islands.The remaining 71% is covered with water, mostly by oceans but also by lakes, rivers and other fresh water, which together constitute the hydrosphere.Much of Earth's polar regions are covered in ice. An earth surface system is a set of interconnected components of the earth surface environment that function together as a complex whole. Beneath the oceans, volcanic activity forms new seafloor while old seafloor is destroyed at the trenches. The ocean basins are all younger than 180 million years. The oceans help regulate the … Aside from the presence of oceans and atmosphere, planet Earth’s outer surface is a crust that is mostly made up of silicates. Saturn: It is a large planet as 120,536 kilometers. Kristen Erickson The early Earth was frequently hit … Its surface is 70 percent water. Earth is the perfect place for life as we know it. Earth makes a complete orbit around the sun (a year in Earth time) in about 365 days. Volcanoes have been constructed within the valley by rising magma. If the Sun were as tall as a typical front door, Earth would be the size of a nickel. 1 Lesson Summary. This is the hydrosphere. Earth orbits our Sun, a star. They usually burn up before they reach the Earth’s surface. Constructive forces cause new features to form by volcanic activity or uplift of the crust. Earth is the third planet from the Sun at a distance of about 93 million miles (150 million km). Home, Sweet Home Earth's surface modeling is generally defined as a spatially explicitly digital description of an earth surface system or a component of the earth surface … A strong magnetic field keeps our atmosphere securely blanketed around the Earth. Of that 3% freshwater, over 2% is frozen in ice sheets and glaciers meaning that less than 1% is freshwater found in lakes, rivers, and the underground. Scientists know that the core is metal for a few reasons. If greenhouse gas emissions continue apace, Greenland and Antarctica’s ice sheets could together contribute more than 15 inches to global sea level rise. Planet Earth has been called the "Blue Planet" due to the abundant water on its surface. Earth's atmosphere is 78 percent nitrogen, 21 percent oxygen and 1 percent other ingredients—the perfect balance to breathe and live. It’s the only planet in our solar system we know of that supports life. Which features result from constructive forces? The Earth’s atmosphere protects the planet from meteors. NASA’s AIM mission has spotted Antarctica's first noctilucent, or night-shining, clouds of the summer. Water, wind, ice, and gravity are important forces of erosion. It has a solid and active surface with mountains, valleys, canyons, plains and so much more. Visit NASA Space Place for more kid-friendly facts, NASA Approves Heliophysics Missions to Explore Sun, Earth's Aurora, NASA's AIM Sees First Night-Shining Clouds of Antarctic Summer, New Satellite Returns First Sea Level Measurements, Hubble Pins Down Weird Exoplanet with Far-Flung Orbit, Data Confirm Near-Earth Object 2020 SO is Upper Centaur Rocket Booster, Follow Sentinel-6 Michael Freilich in Real Time As It Orbits Earth, Sentinel-6 Michael Freilich Satellite Launched to Monitor Global Ocean, Arctic Animals Shifting Movement Patterns as Earth's Climate Changes, Sentinel-6 Michael Freilich Satellite Prepared for Launch, Aurora-Chasing Citizen Scientists Help Discover A New Feature of STEVE, Earth May Have Captured a 1960s-Era Rocket Booster, Sentinel-6 Michael Freilich Prepared for Launch, Greenland's Retreating Glaciers Could Impact Local Ecology, U.S.-European Sea Level Satellite Gears Up for Launch, Prior Weather Linked to Rapid Intensification of Hurricanes Near Landfall, Earth and the Moon Once Shared a Magnetic Shield, Pluto's Ice Caps Made of Methane, Turns Earth's Process Upside Down, Meet the People Behind the Sentinel-6 Michael Freilich Spacecraft, 5 Things to Know About Sentinel-6 Michael Freilich, New Sea Level Satellite Arrives at California Launch Site, Emissions Could Add 15 Inches to Earth's 2100 Sea Level Rise, NASA-Led Study Finds, Solar Cycle 25 Is Here, Scientists Explain What That Means, How Scientists Around the World Track the Solar Cycle. Streams are eroding downward into the slopes of the volcanoes. The ocean basins extend from the edges of the continents down steep slopes to the ocean floor and into deep trenches. NASA has approved two heliophysics missions to explore the Sun and the system that drives space weather near Earth. Earth's changing surface. STEVE, or Strong Thermal Emission Velocity Enhancement, is still new to scientists, who are working to understand all its details. Earth and the other planets in the solar system formed about 4.6 billion years ago. Our atmosphere protects us from incoming meteoroids, most of which break up in our atmosphere before they can strike the surface. These changes mostly occur in very minute ways which over time accumulates to create the earth’s physical features we observe around us today. Earth is the innermost planet in the solar system with a natural satellite – our Moon. Constructive forces cause physical features on Earth’s surface known as landforms to grow. At the planet’s center lies a dense metallic core. The name Earth is at least 1,000 years old. , tired survivors of a war with highly evolved robots called cylons are on a quest to find Earth, a long-lost colony. The second planet from the sun, Venus is slightly smaller than Earth. Dynamic Earth: Introduction to Physical Geography. As the World Turns Just slightly larger than nearby Venus, Earth is the biggest of the four planets closest to the Sun, all of which are made of rock and metal. A valley is a lowland area or surface depression of the earth between higher lands such as mountains or hills.