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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 ice wedging in rock an example of chemical weathering?
Ice wedging is mechanical weathering caused by water flowing into cracks and freezing which expands the water. The ice crack grows larger and larger as the water freezes which expands the water and melts in spring and freezes which makes the crack larger and then melts etc.
Information About Ice Wedges
An ice wedge is a crack in the ground formed by a narrow or thin piece of ice that measures anywhere from 3 to 4 meters wide and extends downwards into the ground up to 10 inches. During the winter months, the water in the ground freezes and expands. Once temperatures reach -17 degrees Celsius or colder, the ice that has already formed acts like a solid and contracts to form cracks in the surface known as ice wedges. As this process continues over many years, ice wedges can grow up to the size of a swimming pool. (from Wikipedia)
yes it is. tiger eye is made from iron and also has small thin bands of malachite in the stone.
Explain how topsoil can be lost?
Topsoil can be lost through erosion caused by water, wind, or human activities like deforestation or intensive agriculture practices. When topsoil is removed faster than it can be replenished, it can lead to a decrease in soil fertility and productivity, affecting plant growth and ecosystem health.
Plate tectonics is a subtopic of Earth science that focuses on the movement of the Earth's lithospheric plates, resulting in the formation of earthquakes, volcanic activity, and mountain building.
In a stream channel what sediment is deposited first?
Coarse sediment, such as gravel and larger particles, is typically deposited first in a stream channel due to its heavier weight and inability to remain suspended in the flowing water for extended periods of time. Finer sediment, like sand and silt, may be carried further downstream before being deposited.
If someone tells me they are feeling hot and sweaty, I can infer that they are likely in a warm environment or engaging in physical activity.
What two types of glaciers are giant sheets of ice that cover large areas of land?
The two types of glaciers that are giant sheets of ice covering large land areas are ice sheets and ice caps. Ice sheets are larger than 50,000 square kilometers and flow outward from a central dome, while ice caps are smaller ice sheets covering less than 50,000 square kilometers.
How has human use of water biologically and geographically changed the earth?
Geographically, humans are changing the routes or rivers, streams, making artificial lakes, and are building dams. Some people also use more water than they are supposed to causing desertification in some areas. Also using much fresh water will eventually cause the water table to decrease. Biologically, they are trying to lower the evaporation rate, managing water flow, agricultural chemicals, etc.
Which structure directs the cells activities?
The nucleus is the structure that directs the cell's activities. It contains the cell's genetic material (DNA) and regulates gene expression to control cell functions.
What time of day is it when shadows are getting shorter?
It is late afternoon when shadows start to get shorter. This happens as the sun begins to descend towards the horizon, casting shadows that grow progressively shorter as the sunlight becomes more direct.
The earth's atmosphere saves us humans from dieing from the suns deadly rays. It is like a shield that saves the knight from a knife. Or putting a blanket over the earth's atmosphere.
The Earth's atmosphere also creates rain. In the summer on a hot, sunny day, water evaporates, and when the steam hits the atmosphere, the steam condensates into water, making rain to fill our lakes, streams, etc.
How does the size of sediment particles affect their movement during deflation?
The larger the piece the longer it will take to break down. This is because it has more mass that needs to be broken down.
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That does not really answer the question, which is about transport. The larger the volume the greater the mass for a given material, so the more resistant it is to being moved.
Coal is not classified as a mineral because it comes?
Coal is not classified as a mineral because it is formed from the remains of plant material, rather than being naturally occurring inorganic solid with a crystalline structure. Minerals are defined as naturally occurring, inorganic substances with a specific chemical composition and crystal structure, which coal does not meet all of these criteria.
The percent of higergen in water?
The exact percentage of hydrogen in water is 11.11%, as water molecule (H2O) contains two hydrogen atoms and one oxygen atom.
Who is the godliest person on Earth?
It is subjective to determine who the godliest person on Earth is as beliefs and interpretations of godliness vary among different individuals and cultures.
What kind of pressure indicates stormy weather?
Pressure, on it's own, does not indicate any particular weather.
It is the changes in air pressure, along with other factors such as humidity etc which indicates the proposed weather changes.
Coming from the sea toward the land?
That would be a coastal zone transition where aquatic ecosystems meet terrestrial ecosystems, known as the intertidal zone. This area experiences changes in environmental conditions due to tides, leading to diverse habitats and species adaptations. Processes like erosion, deposition, and nutrient cycling are significant in this zone.
Which occurs more often on earth physical changes or chemical changes?
Physical changes occur more often on Earth compared to chemical changes. Physical changes involve alterations in the state or appearance of matter without changing its chemical composition. Examples include changes in shape, size, or state of matter (solid, liquid, gas). Chemical changes involve the formation of new substances with different chemical properties.
All the earth water makes up the?
Earth's water makes up about 71% of the planet's surface and is found in oceans, rivers, lakes, glaciers, and underground sources. Water is essential for sustaining life on Earth and plays a crucial role in various ecosystems and natural processes.
If referring to differences in types of waves, their is only longitudinal and tranverse waves in which the only difference is that longitudinal waves move in compressions (such as sound). Transverse waves move in a continuos up and down motion (light waves and displayed in the graph of cosine or sine). The properties of waves are diffraction, refraction, constructive interference, destructive interference, and transfer of energy (this is what a wave is).
When do the polar regions receive darkness for 24 hours?
Only regions north of the Arctic Circle, or south of the Antarctic circle, will experience at least one day without sunlight during the year. The closer one gets to the pole, the more days will occur without sunrise, and conversely the same number without a sunset. At either of the poles, there is 6 months of daylight and 6 months of night.
The equinoxes are the starting and ending of the polar day/night, so the farther away from the poles, the later in the season the day of no sunlight will occur, and the earlier the day of no night.
The slow circulation of the plastic mantle in the earths asthenosphere occurs by what processes?
The slow circulation of the plastic mantle in the Earth's asthenosphere occurs mainly through convection, which involves the transfer of heat and material in response to differences in temperature and density. This process is driven by the heat generated from Earth's core and the radioactive decay of elements within the mantle, causing hot material to rise, cool, sink, and create a circular flow pattern in the asthenosphere.
What kind of seismic waves do and do not travel through liquid?
Both P-waves (primary waves) and S-waves (secondary waves) can travel through solid and liquid materials. However, S-waves cannot propagate through liquids as they require a solid medium for transmission.
What is a list of the mountains of Alaska from smallest to largest?
- Mount St. Elias
- Mount Foraker
- Mount Hunter
- Mount Blackburn
- Mount Wrangell
- Mount Spurr
- Mount Redoubt
- Mount Susitna
- Mount Hayes
- Denali (Mount McKinley)
What is a long deep gap cut into the land?
A long deep gap cut into the land is known as a canyon. Canyons are formed by the erosion of rock by water over a long period of time, creating steep walls and a distinct landform. They are often found in arid or semi-arid regions.
