What factors combined to cause the resonance in Mexico City that was so deadly in the 1985 earthquake? How far was the city from the epicenter?

Q: True or False The upper boundary of the vadose zone is synonymous with the elevation of the water ta...

A: The rainwater collected under the ground and stored as a source of freshwater on the earth surface i...

Q: Contrast the differences between basaltic and rhyolitic magma in terms of SiO2 percentage, weight % ...

A: In Basaltic magma, SiO2 is 45-55 wt% and high in Fe, Mg, Ca, low in K, Na. In Rhyolitic magma, SiO2 ...

Q: Where does the salinity of the ocean comes from?

A: Ocean salinity refers to the total concentration of salts in seawater across all the oceans. The two...

Q: A standstone is an example of a (an)             rock. a. igneous  b. chemical sedimentary c. detrit...

A:  Sandstone is an example of a detrital sedimentary rock.

Q: How to find the contour interval of an entire topographic map?

A: The path guiding chart used by geologists or earth scientist is known as a map, and topographic mapp...

Q: Describe how Earth became segregated into layers of differing density.

A: During the accretionary stages of the earth, it was chemically homogeneous throughout. The young ear...

Q: If you are in an airplane over the epicenter of a great earthquake, what will you experience?

A: During earthquake, pressure and shear waves move in all directions. If the pressure waves leave eart...

Q: Your lifetime will be what percentage of geologic time?

A: The Universe formed from the Big bang, about 13.8 Billion years ago. Earth formed at about 4.55 bill...

Q: What is the carrying capacity of Earth for humans—that is, how many humans can Earth support? What f...

A: The maximum population size of any species in an environment that can be supported based on the amou...

Q: Using the principles of relative dating, put the rock layers, faults and igneous intrusions in seque...

A: In order to understand the chronological order of events in the given figure, we must work from the ...

Q: Gold is often found at the bottom of streambeds in placer deposits. Describe the process that forms ...

A: Placer deposits are composed of heavy mineral sands that accumulate locally. These mineral sands are...

Q: Draw a cross-section and describe the collapse of an oceanic volcano, such as Krakatau. What usually...

A: Krakatoa, a volcanic island present in Indonesia, was destroyed by the violent eruptions in 1883. Th...

Q: Place the letters labeling rock layers, unconformities, faults and intrusions in order from youngest...

A: The rock layers, unconformities, faults and intrusions can be arranged in order from youngest to old...

Q: Mount Vesuvius is one of the world’s most active volcanoes, yet it has quiet intervals lasting how l...

A: Mount Vesuvius is an active volcano, which means it will erupt again. The first recorded evidence of...

Q: List the beneficial aspects of volcanoes and volcanism.

A: Soil formed from volcanic rock and ash provides fertile land for farming. Thus, higher crop yield fo...

Q: What is usually the worst time of day for a big earthquake to strike a city in the western United St...

A: An earthquake's impact depends on the following factors: distance from the epicentre, the severity ...

Q: Why is it unlikely that you will find crevasses in the plastic zone of a glacier? Explain your answe...

A: The term glacier is related to nature which is a heavy accumulation of ice over very long years and ...

Q: Which sedimentary rock process does NOT "fit" into the formation of a sedimentary rock? a. transpora...

A: Sedimentary rock cycle consists of the following steps. It includes: Weathering and erosion, transpo...

Q: Which industrial city.one on the Great Plains or one near the Rocky Mountains would have fewer air p...

A: Air gets cooler with altitude i.e., temperature varies inversely with elevation. In some cases, howe...

Q: What four factors combine to produce lahars?

A:  A lahar is a violent type of volcanic mudflow or debris flow consisting of pyroclastic material, ro...

Q: Where does the rock cycle start? a. crystallization of molten magma b. deposition of sediment c. me...

A: The three types of rocks - igneous, sedimentary and metamorphic - all can evolve from one another in...

Q: What part of the geothermal gradient shows a fast rate of temperature as depth Increases? a. 1500 km...

A: Earth's temperature varies linearly with depth. The average temperature on the planet's surface is a...

Q: Explain global climate change. What causes global warming? What is the evidence that global warming ...

A: Global climate change is an umbrella term that is used to refer to a wide range of global-scale chan...

Q: As wavelength increases, what happens to wave velocity? Which change causes wind-blown ocean waves t...

A: The waves causing the water flow in oceans is a wind wave generated due to the wind blowing on the w...

Q: What is the energy source of: (a) everyday waves at the beach? (b) tidal waves? (c) tsunami?

A: The energy source of everyday waves at the beach is derived from the friction between wind and surfa...

Q: Describe three different methods for the detection exoplanets.  For each method, explain what type o...

A: The most radiating and illuminating source of light in the solar system is a star, for example; the ...

Q: Why are fires in cities so commonly associated with major earthquakes?

A: Fires are a recognized hazard associated with earthquakes, especially in cities and industrial areas...