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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

Why was Jurassic period called Jurassic period?

The Jurassic period is named after the Jura Mountains in Switzerland where significant geological strata from this time period were first studied. These rocks contain abundant fossils from the Jurassic period, which lasted from approximately 201 to 145 million years ago.

What percentage of the water on earth is available for human use?

This depends on what you mean with 'human use'. But it is estimated that 2.75 percent of all water on Earth is fresh water (which I believe is what you mean). Most of that however (2.05) is frozen in glaciers. A further 0.68 percent is ground water, with only 0.011 percent being surface water (in lakes and rivers).

How thick is 0.015?

0.015 inches is equivalent to 0.38 millimeters in thickness.

Which of these factors affects the rate of weathering?

Factors that affect the rate of weathering include the type of rock, climate conditions, presence of vegetation, and human activities. Rock composition and structure determine susceptibility to weathering, while climate influences the speed of chemical and physical processes. Vegetation can promote or inhibit weathering, and human activities such as mining or pollution can accelerate it.

Why do all celestial objects in space not lie on the celestial sphere?

Celestial objects that lie outside a certain distance from Earth, such as distant galaxies, do not appear to lie on the celestial sphere due to their three-dimensional positions in space. The celestial sphere is a theoretical construct that represents the sky as seen from Earth, and objects beyond a certain distance would have different apparent positions when viewed from different vantage points in the universe.

What theories were combined to form the theory of plate tectonics?

The theory of plate tectonics combined the theories of continental drift, which proposed that the continents were once connected and moved over time, and seafloor spreading, which suggested that new oceanic crust is created at mid-ocean ridges. These theories were brought together to create a unified model explaining the motion of Earth's lithosphere.

Isostacy is the balance between what two forces?

Isostasy is the balance between the weight of the Earth's lithosphere pushing down and the buoyant force of the underlying asthenosphere pushing up. This balance helps to maintain the overall stability of the Earth's crust.

What do foraminifera eat?

The Foraminifera, are a class of amoeboid protists. They have thin pseudopodia that form an external net for catching food. They also usually have an external shell, or test, made of various materials and constructed in diverse forms.

What is erosion?

the erosion of soil by water. Its either by meteoric water, ground water, river, rainfall, wave or any water component. It can be classified into two major classes; either Mechanical factor or Chemical factor.

What are the conditions under which surplus moisture may exist?

Surplus moisture may exist in soil when there is excessive rainfall or irrigation, poor drainage, compacted soil that inhibits water infiltration, or if the water table is too high. These conditions can lead to waterlogging, reduced oxygen levels in the soil, and increased susceptibility to root diseases in plants.

Why are nonvascular plants short and small?

Nonvascular plants lack specialized tissues to transport water and nutrients, which limits their ability to grow tall. They rely on direct absorption of water and nutrients through their entire surface, so larger size would make it difficult for these substances to reach all parts of the plant efficiently. Additionally, their small size helps them retain moisture and stay closer to the ground where water is more readily available.

How do you describe a f-4 tornado?

F4 is the second-highest rating on the Fujita scale, which ranges from F0 to F5. F4 and F5 tornadoes are classified as "violent." Less than 1% of all tornadoes receive such a high rating. F4 tornadoes are capable of leveling well-built houses, leaving nothing standing, and blowing away weaker structures. Some have even been known to strip asphalt from roads.

Moving water parallel to Earth's surface?

That would be a current, such as a river or ocean current.

What are the magnetic radiation belts around the earth?

The Earth has two main radiation belts called the Van Allen belts, named after their discoverer. These belts consist of charged particles, mainly electrons and protons, trapped by Earth's magnetic field. The belts are located in the region of space around the Earth where the magnetic field interacts with particles from the Sun.

Solar energy is captured using photovoltaic?

cells, which convert sunlight into electricity. The cells are made of semiconductors like silicon that absorb photons from sunlight and generate an electrical current. This electricity can then be used to power homes, businesses, and other devices.

Why does Secondary succession happen more frequently than primary succession?

Secondary succession happens more frequently than primary succession because the disruption to the environment is usually less severe in secondary succession, making it easier for organisms to recolonize the area. Additionally, the soil in secondary succession is usually already present, allowing for quicker establishment of plant life. This results in a faster and more common occurrence of secondary succession compared to primary succession.

Process that uses oxygen in the body?

Aerobic respiration is the process that uses oxygen in the body to produce energy. This process occurs in the mitochondria of cells and involves breaking down glucose to generate ATP, the primary energy source for cellular activities. Oxygen is the final electron acceptor in the electron transport chain during aerobic respiration.

The flattest regions on earth are?

The Salar de Uyuni in Bolivia and the Bonneville Salt Flats in Utah, USA, are considered some of the flattest regions on Earth. These areas are former lake beds that have dried up, leaving behind expansive flat salt flats. They are popular locations for land speed record attempts due to their smooth and level surfaces.

What physical feature is created when the seafloor spreads?

A mid-ocean ridge is formed along a line created by sea floor spreading. It usually consists of parallel mountain ranges separated by a valley. Sea floor spreading is the result of plate tectonics, where two crustal plates are moving apart. The ridge is formed along lines of the weakest points between the two plates.

What type of rock texture results when extreme pressure causes minerals in metamorphic rock to realign or when minerals separate out into dark and light bands?

I do believe that the answer is "foliated". However I am not positive, but I do know that...

Banding is another word for foliation, which is the grouping of certain minerals with the rock forming parallel bands that are perpendicular to the pressure that causes its formation. Banding of different minerals give some metamorphic rocks a striped appearance, involving the segregation of light and dark minerals into layers.

Good luck with your question and I hope that this information has helped.

Does earth's rotation cause day and night?

Yes, Earth's rotation on its axis is what causes day and night. As the Earth rotates, different parts of it are exposed to the sun's light, creating the cycle of day and night.

Strips of alternating magnetic polarities found in rocks in the ocean basins?

They are known as magnetic stripes and are formed as new sea floor is created at mid-ocean ridges. When molten rock solidifies, it preserves the direction of Earth's magnetic field at that time, creating a record of magnetic reversals in the oceanic crust. The alternating stripes of normal and reversed polarity provide evidence for seafloor spreading and plate tectonics.

What are the three zones of climate?

The three main climate zones are tropical, temperate, and polar. These zones are characterized by their distinct temperature and precipitation patterns, which influence the type of vegetation and wildlife that can thrive in each region.

Why does heat from earths center flow toward the surface?

Heat from Earth's center flows toward the surface through a process called convection, where hot material rises and cooler material sinks. This movement creates a cycle that helps to transfer heat outwards. Over time, this heat transfer leads to the movement of tectonic plates, volcanic activity, and the formation of Earth's crust.