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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
What best describes what earths plates are made up of?
Earth's plates are made up of the rigid outer layer of the Earth's surface, known as the lithosphere. The lithosphere is composed of the Earth's crust and the uppermost part of the mantle. These plates float on the semi-fluid asthenosphere layer beneath them, which allows for the movement of tectonic plates.
What is the composition of the earth and crust?
The Earth is composed mainly of iron, oxygen, silicon, and magnesium. The Earth's crust is primarily made up of oxygen, silicon, aluminum, iron, calcium, sodium, and potassium. The composition of the crust varies depending on the type of rocks present in different regions.
What Name and describe the three parts of the continental margin?
The three parts of the continental margin are the continental shelf, continental slope, and continental rise. The continental shelf is the gently sloping, submerged platform of a continent that extends from the shoreline to the shelf break. The continental slope is a steeper zone that descends from the shelf break to the deep ocean floor. The continental rise is the final gently sloping seafloor region at the base of the continental slope.
How do you Calculation the rate of sea floor spreading examples?
The rate of sea floor spreading is calculated by measuring the distance between magnetic stripes on the sea floor, which are formed by the alternating polarity of Earth's magnetic field. By knowing the age of the sea floor rocks at different distances from a mid-ocean ridge, scientists can determine the spreading rate. For example, if the rocks at a certain distance from the ridge are 1 million years old, and the distance is 100 km, the spreading rate would be 10 cm/year.
How much water is stored on polar icecaps glaciers and permanent snow?
The polar ice caps contain around 68.7% of the world's fresh water, in the form of ice. The ice caps and glaciers hold approximately 69% of the world's fresh water supply, with the majority of this water located in Antarctica. Many glaciers are also found in the Arctic region.
Where does uplift occur Where does subsidence occur?
Uplift occurs when tectonic forces push rock layers upward, leading to the elevation of land. This can happen at convergent boundaries, where tectonic plates collide. Subsidence occurs when the ground sinks or collapses, often due to factors like sediment compaction, mining activities, or the withdrawal of groundwater.
In which sequence are the items listed from least total mass to greatest total mass?
Lightest: Apple, Banana, Orange, Watermelon Heaviest: Orange, Apple, Banana, Watermelon
Where can water flow within a watershed?
wetlands can be found in different parts of the earth such as Canada north America
Asia Europe centraland south America and Australia.
wetlands can be found in different parts of the earth such as Canada north America
Asia Europe centraland south America and Australia.
If you where to travel to the center of the earth the temperature would?
The temperature at the Earth's core is estimated to be around 5700°C (10,300°F). This extreme heat is due to the immense pressure and radioactivity present in the Earth's inner layers. Any attempt to reach the Earth's core would encounter unsurmountable challenges due to the extreme heat and pressure.
Why is air preassuare greastest at the earths surface?
Air pressure is greatest at the Earth's surface because the weight of the air above exerts a force on the air below. As you move higher in the atmosphere, there is less air above pushing down on you, so the pressure decreases. At higher altitudes, there are fewer air molecules, resulting in lower air pressure.
When magma cools slowly what is the rock that forms?
When magma cools slowly, it forms igneous rocks such as granite or diorite, which have large mineral crystals because they had time to grow as the magma solidified.
What type of boundary where mid ocean ridges form?
Mid-ocean ridges form at divergent plate boundaries, where tectonic plates are moving away from each other. This movement allows magma to rise from beneath the Earth's crust and create new oceanic crust at the ridge.
The property being measured is the mineral's streak color. The streak test involves scraping the mineral on an unglazed porcelain tile to see the color of the powdered residue left behind.
What is A mineral that is shiny has a luster?
Pyrite is a mineral known for its metallic luster, appearing shiny and reflecting light. It is commonly referred to as "fool's gold" due to its bright yellow color and metallic appearance.
What is the measurement of height above Earth's surface?
The height above the ground is called altitude. The word is sometimes used to mean elevation, which is the height above mean sea level.
In aviation, altitude is usually expressed in feet ASL (above sea level), but can also be stated as feet AGL (above ground level) for purposes of avoiding obstructions. Properly set barometers can determine height above MSL, while radar altimeters are used to measure AGL.
What three components make up almost all energy earth receives from the sun?
Almost all energy that the Earth receives from the sun comes in the form of solar radiation, which includes visible light, ultraviolet radiation, and infrared radiation. These components are essential for various processes on Earth, such as photosynthesis, heating of the atmosphere, and driving weather patterns.
What layer of earth does convection occur?
Convection occurs in the mantle layer of the Earth. This process involves the movement of molten rock and heat within the mantle, which drives plate tectonics and other geologic phenomena.
How were the hopewell rocks formed?
The Hopewell Rocks were formed through a combination of erosion caused by the tides of the Bay of Fundy and the slow weathering of the rocks over millions of years. The powerful tides of the bay have carved away at the softer rock layers, leaving behind the distinctive sea stacks and flowerpot formations that we see today.
What must happen for any rock I. the rock cycle to form sedimentary?
A rock must undergo weathering and erosion to break into smaller pieces. These fragments then settle and are compacted and cemented together to form sedimentary rocks.
What is the most solid rocky part of earth?
The most solid rocky part of Earth is the inner core, which is composed mainly of iron and nickel. It is solid due to the immense pressure at the center of the Earth, even though temperatures can reach as high as 5700 degrees Celsius.
What processes are involved in this change of the. rock?
The main processes involved in the change of rock are weathering, erosion, and deposition. Weathering breaks down rocks into smaller pieces, erosion moves these pieces to new locations, and deposition is the laying down of these sediments in a new location. Over time, these processes can lead to the formation of new rocks through compaction and cementation.
What 2 spheres cause hurricanes?
Hurricanes are caused by the interaction between the atmosphere and the ocean. Specifically, they are formed when warm air rises from the ocean's surface, creating low pressure at the center of the storm system. This interaction leads to the development of the swirling winds and intense storms characteristic of hurricanes.
Where would you find the oldest crust?
You would find the oldest crust on Earth in certain parts of continental areas, such as the Canadian Shield or parts of Western Australia. These areas contain rocks that are over 3 billion years old, making them some of the oldest crust on the planet.
Mass movement involving the sudden movement of a block of material along a flat inclined surface is called a rockslide. It is a type of landslide characterized by the rapid sliding or falling of rock down a slope.
