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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

Describe how the principle of superposition was used in determining the relative ages of the cross sections?

The principle of superposition states that the higher layers are younger because they must be laid down on a layer below, which is therefore older, can be used in cross-sections. Each layer, going up, is younger than all the previous layers.

When would you be most likely to experience a sea breeze?

You would be most likely to experience a sea breeze during the day, when the land heats up faster than the sea. This temperature difference causes the air above the land to rise, drawing in cooler air from the sea to replace it, resulting in a sea breeze.

Location is a matter of what?

Location is a matter of physical position or placement in a particular area or space. It can refer to a specific geographic point or area where something is situated. The concept of location is often used to describe where objects, people, or events are in relation to each other.

What do hachures on a contour indicate?

Hachure lines are a form of representation for showing the contours on a map. They point towards the steepest part of the slope. Hachure lines are an old form of showing relief, and less useful, scientifically, than contour lines.

How does recicoling help the earth?

Recycling helps the Earth by reducing the amount of waste sent to landfills, conserving natural resources like water and energy, and decreasing pollution caused by extracting and processing raw materials. By recycling, we can help protect the environment and reduce our carbon footprint.

What are two most common elements in Earth's crust?

The two most common elements in Earth's crust are oxygen and silicon. Oxygen makes up about 46.6% of the Earth's crust by weight, while silicon makes up about 27.7%.

The term for the body of a bryophyte such as Marchantia is?

The body of a bryophyte, such as Marchantia, is called a thallus. It is a simple, undifferentiated plant body that lacks true roots, stems, and leaves.

Light made by a meteoroid as it passes through the atmosphere?

The light produced by a meteoroid passing through the Earth's atmosphere is called a meteor or shooting star. This phenomenon occurs due to the intense heat generated by the friction between the meteoroid and air molecules as it rapidly descends. The light is produced when the meteoroid vaporizes and ionizes the surrounding air, creating a glowing trail in its wake.

Seventy percent of our world's fresh water is held in what?

Seventy percent of our world's fresh water is held in glaciers and ice caps, mainly in polar regions. This frozen water plays a crucial role in regulating global climate and supplying water to rivers and ecosystems.

What factors control the viscosity of magma and lava?

The three factors that control the viscosity of lava are temperature, composition and dissolved gases. When the temperature is hotter, there will be less viscous. When the composition has a higher silica content, there will be higher viscosity and a lower silica content means a lower viscosity. The gases will expand within the lava as it nears the surface of the Earth because of decreasing pressure.

Plan the prototype for a twenty-first century primer?

A twenty-first century primer prototype could include interactive digital elements such as videos, animations, and interactive quizzes to engage learners. It could feature multimedia content covering a wide range of topics, from traditional subjects like reading and math to newer areas like coding and digital literacy. The primer could also incorporate gamification elements to make learning fun and rewarding for users.

How would the atmosphere protect people?

There are many ways in which the atmosphere protects us.

The troposphere is the layer of the atmosphere we live in. It contains weather.

The stratosphere contains the Ozone Layer. This layer protects us from UV rays

The mesosphere has low temperatures and burns meteors. This stops objects in space that can harm the earth.

Hematite is an example of what type of mineral?

Hematite is an example of an iron oxide mineral. It is composed mainly of iron oxide and typically exhibits a reddish-brown to silver-gray color.

What is rock and give the types of rocks?

Rock is a naturally occurring solid substance composed of one or more minerals. The three main types of rocks are igneous, formed from the cooling of molten rock; sedimentary, formed from the accumulation and compression of sediments; and metamorphic, formed from the alteration of existing rocks through high pressure and temperature.

In what ways are comets and asteroids similar?

Asteroids and comets have a few things in common. They are both celestial bodies orbiting our Sun, and they both can have unusual orbits, sometimes straying close to Earth or the other planets. They are both "leftovers" - made from materials from the formation of our Solar System 4.5 billion years ago.

While asteroids consist of metals and rocky material, comets are made up of ice, dust, rocky materials and organic compounds.

When comets get closer to the Sun, they lose material with each orbit because some of their ice melts and vaporizes. Asteroids typically remain solid, even when near the Sun.

When comets approach the Sun, some of their ices melt. This causes another notable difference between asteroids and comets: comets have "tails" while asteroids generally don't. When the ices in comets begin to melt and other materials vaporize from the heat from the Sun, this forms a glowing halo that extends outward from the comet as it sails through space.

There is a big difference when it comes to numbers… although there is a caveat in that we don't know precisely how many asteroids OR comets there are in our Solar System, since lots have never been seen. Astronomers have discovered millions of asteroids - some as small as dust particles and others measuring hundreds of kilometers across (width). But as of this writing, astronomers have found only about 4,000 comets.

[However, some estimates say there could be one hundred billion comets in the Oort cloud.]

How does a glacier grow?

A glacier forms in a place where snow builds up for years. The main thing is that it has to be in a place where the snow does not melt in the summer. After so long, the weight of the snow compresses and becomes as, and as long as more snow falls on top of that glacier, that is what happens..... ^.^ I hope this answer helped!

The earth revolves around the sun?

earth revolves on its axis to do change in day and night which is very important to make a human body survive

Were does a plant make its food?

Green plants use a process called photosynthesis to combine Water and Carbon dioxide gas to form carbohydrates, using the energy from sunlight to power the reaction. Oxygen gas is given off as a waste product of this reaction.

The distinction between the crust and mantle is primarily on the basis of a difference in?

composition — the crust is primarily composed of lighter, silicate minerals like granite and basalt, while the mantle is composed of denser minerals like peridotite. This compositional difference contributes to variations in density, temperature, and behaviour between the crust and mantle layers of the Earth.

What was Alfred wegners hypothesis about the continents?

Alfred Wegener proposed the hypothesis of continental drift, suggesting that the continents were once joined together in a single landmass called Pangaea. He proposed that the continents had drifted apart over time to their current positions. This idea laid the foundation for the theory of plate tectonics.

How do climate affects soil formation?

Climate affects soil formation by influencing factors such as temperature, rainfall, and vegetation cover. For example, in hot and dry climates, the rate of weathering is slower, resulting in soil with less organic matter. In contrast, in wet and humid climates, intense weathering processes occur, leading to the accumulation of more organic matter in the soil. Temperature variations can also affect soil formation by influencing the activity of soil organisms and the decomposition of organic materials.

Why do you think does the atmosphere contain over half of all the air in the atmosphere?

The atmosphere contains over half of all the air due to the distribution of gases and particles in Earth's layers. The majority of the atmosphere is found in the troposphere, the lowest layer where weather occurs, which contains about 75% of the total air volume. The higher layers contain less air as the density decreases with altitude.

What is used when ore is too deep within earth to be surface mined?

When ore is too deep within the earth to be surface mined, underground mining methods are used. This involves creating tunnels and shafts to access the ore deposits beneath the surface. Various methods such as drift mining, shaft mining, and room and pillar mining can be utilized based on the specific geological conditions.

What is the physical composition of the asthenosphere?

The asthenosphere consists of many varieties of rock which is mostly in a semi molten condition. The temperatures in the asthenosphere reach levels high enough for most of the rock to become soft and plastic, capable of slowly moving while remaining in a solid state, while only about 10 percent is totally molten. The soft, plastic, but solid quality of the asthenosphere allows lithospheric plates to slide on top, resulting in the many earthquakes which occur in this region.