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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

How is the temperature of the earth changing?

The Earth's temperature is increasing due to human activities that release greenhouse gases into the atmosphere, which trap heat and cause the planet to warm up. This phenomenon is known as global warming and is leading to climate change, resulting in more frequent and severe weather events. Efforts to reduce greenhouse gas emissions are needed to mitigate the impacts of rising temperatures on the planet.

How does height above sea level affect climate?

Air is an insulator, the higher the altitude the less air there is, therefore less insulation and the suns heat can escape easily. The higher the altitude the more the atmosphere behaves like a vacuum.

Why is the ice in a glacier considered a mineral but the water in a river is not considered a mineral?

Ice in a glacier meets the requirements for being a mineral, because it is natural, homogeneous, solid and crystalline, and has a definite chemical fomula. River water is liquid and therefore also not crystalline, so it is not a mineral. If and when the river water freezes into ice (naturally), that ice is a mineral.

S waves are longitudinal seismic waves?

This statement is incorrect. S waves are actually transverse seismic waves, meaning they move particles perpendicular to the direction of wave propagation. Longitudinal seismic waves are known as P waves.

What is planetary accretion?

Planetary accretion is the process by which smaller particles in a planetary system collide and stick together, gradually building up larger bodies like planets. This process is driven by gravity, as particles attract each other and form into increasingly larger objects over time. Accretion is a key step in the formation of planets from the protoplanetary disk around a star.

An instrument which is sensitive to small changes in the earth's magnetic field is a?

A magnetometer is an instrument that is sensitive to small changes in the Earth's magnetic field. It is commonly used to measure variations in magnetic fields caused by geological structures, archaeological artifacts, or natural phenomena like auroras.

The condition of warming measure by rising degrees is?

The condition of warming measured by rising degrees refers to an increase in global temperatures due to factors such as greenhouse gas emissions from human activities. This phenomenon, known as global warming, is a significant contributor to climate change and can lead to various environmental impacts such as melting ice caps, rising sea levels, and more frequent extreme weather events. Efforts to mitigate global warming include reducing emissions and transitioning to renewable energy sources.

What percent of people care for the earth?

It is difficult to accurately measure what percent of people care for the earth as opinions and behaviors can vary widely. However, surveys and studies have shown that a significant portion of the global population express concern for the environment and support conservation efforts.

What are the 2 types of core in the layer of earth?

The Earth's core consists of two parts: the outer core, which is composed of molten iron and nickel that flows, generating the Earth's magnetic field; and the inner core, which is a solid ball of iron and nickel due to high pressure despite extreme temperatures.

How does weather affect population?

Weather can impact population by influencing factors such as access to food and water, spread of diseases, and living conditions. Extreme weather events like hurricanes or droughts can displace people and even lead to loss of life, while more gradual changes in temperature and precipitation patterns can affect agricultural productivity, water availability, and overall quality of life in a region.

Who was James hutton and what did he do?

James huttons discovery was the theory of the Earth. His disovery made an idia that fusion of sediments worse by the great heat which James believed the exist beneath the lower regions of the earths crust.

Does earth receive its energy from the sun?

Yes, Earth receives its energy from the sun through a process called solar radiation. Solar energy is essential for heating the Earth's surface, driving weather patterns, and sustaining life through photosynthesis.

Example of law conservation of energy?

Let's say that everything is an example of the Law of Conservation of Energy - because this is a law that has never been seen to fail. More specifically, in any energy conversion, one type of energy gets reduced; another type of energy inreases in the same amount.

What are the steps of condensation?

Evaporation happens when heat(the sun) hits water, and it turns into a gas. Which is also called "water vapor." Then when a whole amount of the gas comes together, it becomes a cloud. Then once the cloud becomes full(after a long period of time)it falls into a liquid. Which is called precipitation.

What slows erosion?

Erosion can be slowed in a number of ways, but by far the cheapest is to plant vegetation. After that, it would depend on the type of erosion you are trying to slow down...

Marine erosion

To slow down Marine (Sea/Ocean) erosion, you could build an artificial reef, dump sand and/or various debris on the shore (which would be potentially unsightly) or you could build a sea defence system; including a sea wall as a secondary defence, and with wave breaks as a primary defence.

Fluvial erosion

Although there are small scale erosions like rill and gulley, these are very difficult to source and eliminate. A river, however, can be far more devastating, and also far more easy to track. A river meander (bend) is a fickle landform, and moves with exceptional speed (in geological terms). One can move from one side of the valley to another in decades, and can disappear completely in the same time. To prevent the movement of these meanders, farmers reinforce the outside bank of the meander with concrete or with metal rods.

Aeolian erosion

There's really not a lot you can do here: apart from planting vegetation, there is little protection from the wind.

Glacial erosion

Glaciers are unstoppable. Unless you used some kind of a huge flame-thrower etc. you could never hope to stop a glacier. On the other hand, glaciers aren't worth worrying about as the only rocks they erode are those they are in contact with, and that's not rock that you'd be worrying about - unless you reside somehow on the sides of the trough...

Describe two types of stress that deform rocks?

Compression (that acts to decrease an objects volume by squashing it together), Tension (which acts to increase an objects volume by pulling it apart) and a bonus Shear which acts in opposite directions on opposite sides of an object to make the two halves slide past each other.

Why are there moon phases?

Moon phases are a result of the changing position of the Moon in relation to the Earth and the Sun. As the Moon orbits the Earth, the amount of sunlight reflecting off its surface changes, causing the appearance of different moon phases as viewed from Earth.

Is an earthquake stronger than an epicenter?

An earthquake is the shaking of the ground caused by a sudden release of energy in the Earth's crust, while the epicenter is the point on the Earth's surface directly above where the earthquake originated. The strength of an earthquake is measured by its magnitude, which is not related to the location of the epicenter.

When did the world first start?

The precise date of the beginning of the universe is unknown, however we do know how the world started... or at least we have a theory that there was a gas ball in 'outer space' that continued to rotate until it imploded on itself and created the sun (the middle and warmest spot) and the four terrestrial planets, Mercury, Venus, Mars, and Earth from the collision of asteroids. In addition, the four gaseous planets were formed (Neptune, Saturn, Uranus, Jupiter) were created from the gasses left over from the Helium and Hydrogen (predominately) ball.

The hydrologic rock and tectonic cycles are powered by two main energy sources what are the called?

The hydrologic cycle is powered by solar energy, which drives evaporation and precipitation. The tectonic cycle is powered by heat from the Earth's interior, which drives plate tectonics and volcanic activity.

What is the The tide rises the tide falls about?

"The Tide Rises, The Tide Falls" is a poem by Henry Wadsworth Longfellow that explores the cyclical and inevitable nature of life and death. The poem juxtaposes the eternal presence of the tide with the fleeting existence of a traveler who eventually succumbs to the night. It serves as a meditation on mortality and the continuity of the natural world.

A desert shows much wider daily temperature variation than a moist environment?

Deserts have low humidity levels which allows for rapid cooling at night, resulting in wide temperature variations. In moist environments, the humidity retains heat and moderates temperature changes, leading to smaller daily temperature variations.

Which is a characteristic of member of the plant kingdom that distinguishes them from members of the animal kingdom?

The biggest difference is that plants tend to be photosynthetic/autotrophic (Indian pipe plants are a recently evolved exception, no trace of chlorophyll) while all animals are heterotrophic. Other plant species are both heterotrophic and photosynthetic such as parasitic and carnivorous plants. This key difference is due to their evolutionary descent- both evolved from types of protists. Plants evolved from algae and animals evolved from protozoa.

What is the blue part of the earth?

The blue part of the Earth refers to the water bodies, such as oceans, seas, lakes, and rivers, that cover approximately 71% of the planet's surface. Water reflects blue light from the sun, giving it a blue appearance when viewed from space.