7. What are the characteristics of mafic magmas (silica content, temperature at eruption, viscosity, volatile content, explosiveness)? Of felsic magmas?

Q: If you lived at the equator on December 21-22, would you look toward the north or south to see the S...

A: The Sun's position varies depending on the time of the year and the location/point of observation. D...

Q: What general climatic and oceanographic conditions characterized the mid-Cretaceous world?

A: It is now a well-known fact that the climate of the earth has varied in the geological past. Indirec...

Q: Explain how environment is defined in Lesotho

A: The surroundings that encompass a living being is called environment. The environment of a place is ...

Q: How is heat transported from tropical regions to polar regions?

A: Solar energy is not distributed uniformly over the surface of the earth. Between 35 degrees north la...

Q: Which body nominally governs the Law of the Sea?

A: Hugo Grotius is known as the father of international law responsible for the concept of “freedom of ...

Q: In June, why does the outer edge of the atmosphere at the equator receive less solar radiation than ...

A: The Earth is tilted at an angle of 23.5 degrees on its axis. Due to this tilt, the Earth does not re...

Q: Which planktonic primary producers can succeed at the greatest depths?

A: Planktons are aquatic organisms that do not possess the capability of swimming. Primary producers, a...

Q: Do the warmest temperatures occur over continents or over oceans? Do the coldest temperatures occur ...

A: The specific heat of water is more than that of land. Therefore the land heats up quickly and looses...

Q: Help

A: Earlier, the earth was a ball of magma. Later, when the conditions started to change, many gases got...

Q: Describe waste lands regarding Chemistry of saline-sodic soils?

A: Soil that contains enough soluble salts to dissipate its productivity is termed saline soil. Likewis...

Q: 12.6

A: "Since you have asked multiple questions, we will solve the first question for you. If you want any ...

Q: What is the classification of hazard?

A: Hazard can be defined as any potential source of damage. In geology these are the events caused by g...

Q: Why would populations with higher genetic biodiversity have a better chance of surviving the sudden ...

A: Genetic biodiversity among a population essentially means that the organisms of the population posse...

Q: Explain the Torino scale of impact threats.

A: The creation of the Torino scale was done by Professor Richard P.Binzel from the department of earth...

Q: What are six major components of soil?

A: Soil is a product of the natural breakdown of rocks called Weathering, and it includes a physical an...

Q: Rahim was told by his friend Kelly that the planets Mars and Jupiter are never in the sky at the sam...

A: According to the given statement, Rahim looked up on the NASA's website. This essentially indicates ...

Q: Thinking Critically What factors contribute to the uneven heating of Earth by the sun?

A: Uneven Heating of Earth Sun is the ultimate source of energy on the earth. The different place on th...

Q: 02: A surface is tilt with horizontal 30o and has surface azimuth angle 10. At May 5 in the local ti...

A: the declination angle is given by  → eq 1 where δ= declination angle and d= day of the year. the dat...

Q: Some people have suggested that we could find room for an exponentially growing human population by ...

A: Continue exponential growth in the human population is a severe issue that humankind is about to fac...

Q: The principle of uniformitarionism states that the present is the key to the past.In other words, th...

A: The principle of uniformitarianism assumes that the laws of nature and all the natural process obser...

Q: True or False: The number and the size of earthquakes decrease before a volcanic eruption. A True Fa...

A: Earthquakes and volcanoes are both a product of plate motions and hence are intrinsically linked. Wh...

Q: What features make Earth a more hospitable place than other planets for life as we know it?

A: The primary requirements for formation and survival of life are Energy, Water and the ambient temper...

Q: The environmental and climatic factors on Mount Elbrus have similarities and difference compared to ...

A: Mount Elbrus Mount Elbrus is located in Eurasia and is the highest peak in Eurasia. It has two dorma...

Q: How does the Richter magnitude remains in widespread usage?

A: Earthquakes are a physical phenomenon that results in a violent shaking of the Earth. Earthquakes ar...

Q: WHAT I KNOW WHAT I WANT TO KNOW WHATI LEARNED Whatdo I know about What do Iwant to know Whathave Ilo...

A: The earth crust is majorly composed of rocks and products of rock weathering. The aggregation of one...

Q: If a typhoon is located at 15 N and 138 E is it within the Philippine Area of Responsibility

A: Philippine Area of Responsibility Philippine Area of Responsibility is the area bounded by coordinat...

Q: What is wind? What causes wind?

A: Wind is an important component/element of the weather and climate.

Q: Problem 3. Physical Features of the Giant Planets: Size of Uranus (Palen, et. al. 1st Ed. Chapter 8 ...

A: Relative motion between earth and Uranus= 23km/s The star disappears for 37 minutes 2 seconds i.e. (...

Q: In general, how do surface temperatures vary from the equator toward the poles? What is the likely c...

A: The sun is the ultimate source of energy on the earth. The heat from the sun is not distributed unif...

Q: Q1: Choose correct answer: 1. The characterization factor of a crude oil is calculated as 12.5. It m...

A: Crude oil is also known as petroleum. Crude oil is the general term used for all the natural hydroca...

Q: What is unique about picoplankton?

A: Planktons are organisms that drift in the marine environment.  These are the organisms that are carr...

Q: Calculate the bulk density of a 110 Cu Cm soil sample with an oven dry weight of 250 grams.

A: Bulk density is defined as the weight of soil in a given volume. It is typically expressed in g/cm3....

Q: Why might a laccolith be detected at the earth's surface before being exposed by erosion? What is th...

A: The intrusive igneous body essentially refers to the volume of magma that intrudes or gets emplaced ...

Q: How does the equilibrium theory of tides differ from the dynamic theory?

A: Tides are rise and fall in the water levels in water bodies due to the changes in gravitational forc...

Q: A. The results of John and Sarah's experiment are shown below. Notice that the images are enlarged. ...

A: Introduction:Texture is a term used to explain intergranular relationships, including grain shape, s...

Q: Can you think of any way to prevent a cataclysmic asteroid or comet impact once the object’s path ha...

A: Asteroids and comets are extraterrestrial materials that come within Earth's atmosphere occasionally...

Q: Both water and oil are liquid.Water boils, oil fries.Why the difference??

A: Oil and water both are liquid. But the only difference that makes water to boil and oil fry is the d...

Q: 2. The Coriolis effect is due to Earth’s a. orbit around the sun b. tilted axis of rotation c. rotat...

A: The Coriolis effect is defined as the pattern of deflection of objects or masses that travel long di...

Q: INTRUSIVE & EXTRUSIVE Look at the picture below. Drag the blue boxes to correctly label it. intrusiv...

A: Rocks are naturally occurring substances composed of solid crystals.

Q: How does the amount of energy flowing from the interior of Earth compare to the energy received from...

A: The Energy received from the sun makes the Earth's heat budget. It is the cycling of solar energy fr...

Q: Draw a cross-section through a slope and explain external actions that are likely to cause failure a...

A: Mass Movement, which is also known as mass wasting, is a natural phenomenon represented by the gradu...

Q: Write down the expression that results from the flow analysis to calculate the volume of water flowi...

A: In the year 1856, a French hydraulic engineer named Henry Darcy put forward a law which gives the di...

Q: If the Richter scale is altered so that it compares energy released instead of intensity, the defini...

A: If the Richter scale is altered so that it compares energy released instead of intensity, the defini...

Q: Describe the major provisions of NEPA, the Clean Air Act, the Clean Water Act, the Endangered Specie...

A: The different kinds of policy made to protect the environment. It is the practice of protecting the ...

Q: Which would be a key contribution of seismology to understanding the cause for mountains, volcanoes,...

A: Seismology is the scientific study of genesis of seismic waves and their propagation. This study als...

Q: how would you expect the winds north and south of the equator to flow

A: The Equator lies in the tropical region of the earth at the 0-degree latitude. At the equator, there...

Q: During the Snowball Earth temperatures at the equator rarely exceeded -20 degrees Celsius. Why didn'...

A: The Snowball Earth is a hypothesis which states that the whole of Earth was frozen around 650 millio...

Q: Describe how the region’s fragile, often arid setting shapes contemporary environmental challenges.

A: Different regions of the Earth have different weather conditions. Some conditions are favourable for...

Q: Lake Michigan is long and narrow and trends north-south. Could a seiche develop in this lake? Are se...

A: Standing waves or stationary waves are the waves that oscillate in time, but the wave's peak amplitu...

Q: Why there are different types of soil on the earth?

A: Soil is the thin upper layer of continental crust. The formation of soil is very slow process and in...