The correct answer to the question "What causes a 'V' shaped valley?" is Option 2: River erosion.
A 'V' shaped valley is formed by the erosive action of a river or stream over time. As the river flows, it erodes the surrounding rocks and sediments, gradually deepening and widening its channel. The erosive forces of the water, combined with the movement of sediment and debris carried by the river, carve out a distinct 'V' shape.
The process of river erosion involves the wearing away of the riverbed and banks through several mechanisms. Firstly, hydraulic action occurs when the force of the moving water dislodges and carries away loose particles of rock and soil. Secondly, abrasion or corrasion happens as the river's load of sediments scours and rubs against the riverbed, further deepening and widening the channel. Finally, corrosion or solution occurs when the river's water chemically dissolves certain types of rocks, such as limestone.
Over time, these erosive processes shape the landscape, creating a 'V' shaped valley with steep sides and a narrow bottom. The steep sides of the valley are known as valley walls or valley slopes, while the narrow bottom is called the valley floor or channel.
It is important to note that while glacial erosion can also create U-shaped valleys, wind erosion and mass wasting (such as landslides or rockfalls) are not typically responsible for the formation of 'V' shaped valleys.
10 km:
°C
50 km:
°C
80 km:
°C
Answer: 10 km is -50 degrees Celsius
50 km is 0 degrees Celsius
80 km is -85 degrees Celsius
Explanation:
Answer:
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Explanation:
The temperature of the atmosphere varies with altitude. Here are the approximate temperatures at each of the given altitudes:
1. 10 km:
At an altitude of 10 km, the approximate temperature is around -50 to -60 degrees Celsius. This altitude is within the troposphere, the lowest layer of the atmosphere, where temperature generally decreases with increasing altitude.
2. 50 km:
At an altitude of 50 km, the approximate temperature is around -70 to -80 degrees Celsius. This altitude is within the mesosphere, which is the third layer of the atmosphere. In the mesosphere, temperature decreases with increasing altitude, and it is colder compared to the troposphere.
3. 80 km:
At an altitude of 80 km, the approximate temperature is around -100 to -120 degrees Celsius. This altitude is within the thermosphere, the second highest layer of the atmosphere. The thermosphere is characterized by very low densities and high temperatures due to the absorption of high-energy solar radiation.
It is important to note that these temperatures are approximate and can vary depending on various factors such as time of day, season, and geographical location. Additionally, the temperature profiles can exhibit variations due to atmospheric phenomena such as inversions or anomalies.
b. Mercury and Mars
c. Venus and Mercury
d. Mercury and Earth
To construct a map displaying human characteristics of an area, you can gather data from sources such as census data, land use data, and transportation data.
A map displaying human characteristics of an area could be constructed using data from a variety of sources. Some possible sources include census data, which provides information about the population's age, ethnicity, and occupation; land use data, which shows how areas are utilized for residential, commercial, or industrial purposes; and transportation data, which highlights road networks and transportation infrastructure. By gathering and analyzing data from these sources, a comprehensive map can be created that represents the human characteristics of the area.
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