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Earth Sciences
Earth Sciences is the study of the Earth in terms of Geography, Geology, Geophysics, etc. It combines the use of Sciences such as Biology, Chemistry, Physics and Mathematics to understand the Earth System.
34,763 Questions
Is the sun closer or farther in Winter?
Yes.
OK, that's not very helpful. The Earth's orbit is an ellipse, farthest away from the Sun on July 4, closest to the Sun on January 4. (Plus or minus one day due to the cycle of leap years!) So in the northern hemisphere, the Earth is closest to the Sun in the winter, and farthest from the Sun in the summer. In the southern hemisphere, the Earth is closer in the summer and farther away in the winter.
The difference isn't very much; only about a million miles or so.
7000 N. The force of gravitation is mutual, and is always equal on both members of a pair of masses.
In other words, within my gravitational field, the earth weighs 185 pounds.
What are the things an animal needs to survive?
Name the five layers of earth's atmosphere and conditions?
Earth's atmosphere can be divided into five main layers. These layers are mainly determined by whether temperature increases or decreases with altitude. From highest to lowest, these layers are:ExosphereThe outermost layer of Earth's atmosphere extends from the exobase upward. Here the particles are so far apart that they can travel hundreds of km without colliding with one another. Since the particles rarely collide, the atmosphere no longer behaves like a fluid. These free-moving particles follow ballistic trajectories and may migrate into and out of the magnetosphere or the solar wind. The exosphere is mainly composed of hydrogen and helium.ThermosphereTemperature increases with height in the thermosphere from the mesopause up to the Thermopause then is constant with height. The temperature of this layer can rise to 1,500 °C (2,730 °F), though the gas molecules are so far apart that temperature in the usual sense is not well defined. The ISS orbits in this layer, between 320 and 380 km (200 and 240 mi). The top of the thermosphere is the bottom of the exosphere, called the exobase. Its height varies with solar activity and ranges from about 350-800 km (220-500 mi; 1,100,000-2,600,000 ft).MesophereThe mesosphere extends from the stratopause to 80-85 km (50-53 mi; 260,000-280,000 ft). It is the layer where most meteors burn up upon entering the atmosphere. Temperature decreases with height in the mesosphere. The mesopause, the temperature minimum that marks the top of the mesosphere, is the coldest place on Earth and has an average temperature around −100 C(−148.0 F; 173.1 K).StratrosphereThe stratosphere extends from the tropopause to about 51 km (32 mi; 170,000 ft). Temperature increases with height, which restricts turbulence and mixing. The statrosphere, which is the boundary between the stratosphere and mesosphere, typically is at 50 to 55 km (31 to 34 mi; 160,000 to 180,000 ft). The pressure here is 1/1000th sea levelTroposphereThe troposphere begins at the surface and extends to between 7 km (23,000 ft) at the poles and 17 km (56,000 ft) at the equator, with some variation due to weather. The troposphere is mostly heated by transfer of energy from the surface, so on average the lowest part of the troposphere is warmest and temperature decreases with altitude. This promotes vertical mixing (hence the origin of its name in the Greek word trope, meaning turn or overturn). The troposphere contains roughly 80%of the mass of the atmosphere. The tropopause is the boundary between the troposphere and stratosphere.
What describes the force of atmospheric pressure on a blimp?
The force of atmospheric pressure on a blimp is what helps it to stay inflated and maintain its shape. The blimp is designed to have a higher pressure inside than outside, creating buoyancy that enables it to float in the air. Changes in atmospheric pressure can impact the altitude and stability of the blimp.
What is the source of the condensed water?
When water molecules get to a certain temperature, they change into their gas state (evaporation). Condensation occurs when the evaporated water hits something cool, and it reverts back to its liquid state. This is why if you boil water and then put a lid over it, condensation gathers in the top of the lid. Also condensed water can be dew drops. They are purified.
Why do stars and constellations also appear to rise and set?
Stars and constellations appear to rise and set due to the rotation of the Earth on its axis. As the Earth rotates, different stars and constellations come into view or move out of view from a specific location on Earth, giving the illusion of them rising and setting.
What is the reflected motion that the earth rotation causes?
The Earth's rotation causes the apparent motion of celestial bodies in the sky. This motion is due to the changing position of the observer on the rotating Earth, making stars and other celestial objects appear to rise and set each day. It also causes the apparent movement of the Sun across the sky, creating day and night cycles.
Neon was discovered in 1898 by Sir William Ramsay and Morris Travers. They obtained it by fractional distillation of liquid air. Neon is a colorless, odorless noble gas that is commonly used in neon lights and advertising signs.
Why do we see one side of the moon?
We see only one side of the moon because of a phenomenon called synchronous rotation. This means that the time it takes for the moon to rotate on its axis is the same as the time it takes for the moon to orbit the Earth, causing one side to always face us.
What is the size of a small and large crater?
The earth has an atmosphere which can burn up any Rocks or Comets (anything from space ) that enter .. so less gets to the surface.. :D the moon does not have this ..
The earth has wind and rain and plants to break up and hide the craters. No wind on the moon means the craters stay perfect for thousands of years, or until another crater covers it. And there used to be more space rocks in this neighbourhood in the old days.
The term for a ridge of coral in the sea that may be covered by high tides and exposed at low tides is a "coral reef." Coral reefs are diverse underwater ecosystems formed by the secretion of calcium carbonate by corals. They provide habitats for a wide range of marine life and are important for biodiversity and coastal protection.
What are some phyisical features of Mercury?
When asking questions please be more specific so those that are answering do not have to answer two different questions.
Mercury (the element) is a dense, silvery-white, poisonous metal with a mirror-like appearance. It is the only common metal that is liquid at room temperature. Mercury evaporates slowly at room temperature. You find this mercury in a thermometer as it is a transition metal, silvery-white in color, with an atomic weight of 200.59 and in a liquid state. It has a melting point of -38.83 degrees C, 234.32 Kelvin. In addition, it has a density @ 20 degrees C. of 13.546 g/cm3. Mercury and most of its compounds are highly toxic and the pure metal is absorbed easily by inhalation, ingestion or through the skin.
Mercury (the planet) has a mean surface temperature of 452 K, but it ranges from 90-700 K; The sunlight on Mercury's surface is 6.5 times as strong as it is on Earth, with the solar constant having a value of 9.13 kW/m². For about 800 million years Mercury was pummeled by comets and asteroids and therefore riddled with craters. These impacts were facilitated by the fact that Mercury has no atmosphere and therefore those objects colliding with the planet were not slowed. In addition, the planet was volcanically active during this period which resulted in magma plains.
Does water exist in all three physical states of earth?
Yes, water exists in all three physical states on Earth. It can be found as a solid (ice), a liquid (water), and a gas (water vapor) depending on the temperature and pressure conditions.
How many ounces would you weigh on the moon?
You weigh 1/6 what you do on earth when youre on the moon.
What are all the living and non-living things in one area called?
What are the non living factors in the environment called
When do people know that the earth is round?
Hard answer as the question could be read as when did people know that the earth is round, or how do people know that the earth is round.
Historically, many people have been credited with the theory of spherical earth, dating back to ancient Greece. Many philosophers of Ancient Greece spoke of earth being round, but most often the credit is given to Pythagoras.
The explanation that the world wasn't flat was by observing changes in altitude and the placement of the stars in different locations as they moved around the pole.
How do the earth contribute to the life cycle?
The Earth provides the essential components necessary for life to thrive, such as water, nutrients, and energy from the sun. It also acts as a habitat for a wide range of organisms, allowing for complex ecosystems to form and sustain life cycles through processes like photosynthesis, decomposition, and nutrient cycling. Additionally, the Earth's diverse environments offer different niches and conditions that support the adaptation and evolution of species over time.
Identify what kind of a star is the sun?
The sun is a G-type main-sequence star, also known as a yellow dwarf star. It is in a stable phase of its life cycle, converting hydrogen into helium through nuclear fusion in its core. The sun's spectral classification is G2V.
How much does the earth rotate in one second?
Earth takes 365 days to rotate around the sun. Which leads to one year. 24 hours leads to one day!
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How does the Earth's varying distance from the Sun affect our seasons?
The Earth's distance from the Sun does not significantly impact the seasons. Instead, the tilt of the Earth's axis as it orbits the Sun is the main factor driving the seasonal changes. This tilt results in variations in the angle and duration of sunlight received by different parts of the Earth throughout the year, leading to the changing seasons.
What is the opposite of a vernal equinox?
The longest day and shortest night occurs on the summer solstice. The shortest day and longest night occurs on the winter solstice. Midway between these points (2x a year) are the equinox, where the day and night are of equal length.
What day of the year does the sun rise farthest south?
In the northern hemisphere, the Summer Solstice is on June 21 (plus or minus one day depending on the cycle of leap years), and the Sun is as far north of the equator as it ever gets. In the southern hemisphere, June 21 is the winter solstice.
In the northern hemisphere, the winter solstice is on December 21 (this is the summer solstice "Down Under") when the Sun is as far south of the equator as it ever gets.
What are the changes in day and night?
Day and night occur due to the rotation of the Earth on its axis. During the day, the side of the Earth facing the Sun experiences daylight, while the opposite side is in darkness. As the Earth rotates, different parts of the planet transition between day and night.
Can the Earth produce its own light?
The question regarding if the Earth could exist with just artificial light is interesting. The planet is dependent on the sun for more than just light so the answer would be no. For a short term it could be possible but this duration would be very brief. The sun provides the heat that enables our life climates. Our distance from the sun keeps temperate zones life has evolved with. The oxygen needed is produced mostly by photo-plankton in the oceans. That would be impossible to duplicate on a global scale with artificial light. Fuel sources to provide artificial light as well as heat would be depleted within a short time. Our current technology is not sufficient to enable us to live on the Earth with artificial light at this time.
