Formation of planetesimals by condensation refers to the process of   a. meteorites colliding and sticking together.   b. asteroids colliding and breaking apart.   c. matter building one atom at a time.   d. asteroid collisions and adhesion.

Q: What are the characteristics of a quasar?

A: Quasars have a highly luminous active Steller galactic-nucleus in with a super massive-black hole re...

Q: What is the chance that stars from two interacting galaxies will collide?   a. almost certain ...

A: The average distance between two stars of two interacting galaxies is about 160 billion km. The star...

Q: True or False   1. For most residential and commercial buildings “subtantial life safety” means few ...

A: Earthquakes are major threats for those peoples living in an earthquake-prone area. It causes damage...

Q: Most of the lines in the spectrum of the quasar 3C 273 are caused by   a. calcium.   b. carb...

A: Quasars are luminous galactic object which have very high luminous nucleus, in which a supermassive ...

Q: Activity Problem Statement of Applications of Remote Sensing in Geology.mention any references that ...

A: The method of detecting & tracking an area's physical characteristics by analysing its reflected...

Q: Please Answer I need your help!!! Fill in the table with the needed information about the global c...

A: Climate is the average weather pattern of a region. It is the average of almost 30 years of weather ...

Q: Write down the Difference between reactive and passive environmental strategies with example

A: Proactive Procedures are mediations that are utilized on a continuous premise trying to decrease the...

Q: The most precise measurements of the Hubble constant yield a value of   a. 20 km/s/Mpc.   b. ...

A: Edwin Hubble had already established that the universe was expanding in all directions at a uniform ...

Q: Name and describe one management response that we could take to reduce the risk of future wildfires,...

A: Wildfire also termed forest fire is an uncontrolled outburst of fire in a forest or vegetated land p...

Q: The Kuiper belt refers to which of the following?   a. the region of the solar system that is th...

A: The Kuiper-belt is a circumstellar disk located-in the outer-solar system. It extends far beyond the...

Q: The current atmosphere of Earth is believed to be   a. the remnants of the original gas from the...

A: Atmosphere is a layer air that consist of various element in gaseous state. It contains all the oxyg...

Q: 22) Please answer the question in the photo

A: Firstly, let us discuss something about the volcano Sangay, Sangay volcano: highest active volcanoe...

Q: High-speed collisions in which a smaller galaxy passes through another galaxy almost perpendicular t...

A: When smaller galaxies move through the center of larger galaxies, ring galaxies are formed. When two...

Q: What features on the landscape serve as a strong link between the land and oceans:a. plantsb. rivers...

A: The natural landscape consists of several features among which are a collection of-landforms such as...

Q: 31) Which of the following methods can be used to determine the presence of a solid inner core on Ea...

A: Seismic wave is wave of energy which travel in earths layers and are used to study different earths ...

Q: The dark age ended   a. when the first supernovae occurred.   b. when the first stars were b...

A: The big bang theory explains the formation of universe and its expansion which state that the univer...

Q: True or False 1. Change in character of coal with increasing application of heat and pressure. There...

A: The coal is a combustible-black coloured sedimentary rock. The coal is formed by the rock strata cal...

Q: The formation of the solar system from a large rotating disk of gas and dust from which the sun also...

A: Solar system is a system of the sun and all the object which orbit it directly (planets asteroid com...

Q: An irregular galaxy contains mostly   a. lower main-sequence stars and giants.   b. upper ma...

A: Irregular galaxy: It is a galaxy that appears randomly and irregularly and does not have a specific ...

Q: True or False 1. Modern very-high-temperature (up to 700°C) incinerators break down hazardous compou...

A: An incinerator is a furnace used for burning wastes. An incinerator should operate at higher tempera...

Q: Q2: The Herbridean craton (Lewisian complex) makes up a significant proportion of the NW Foreland. O...

A: The Hebridean craton is part of the Lewisian complex that was deposited during the Precambrian perio...

Q: ______________________ are produced when two galaxies pass near each other and pull large streamers ...

A: Galaxies also have scalar and vector parameters and quantities like all other bodies. Galaxies are c...

Q: What differences would you expect in nitrate contents of streams from a forested watershed and one w...

A: The nitrate content of the streams near to agricultural fields will be more . 

Q: ii) The arrow on each of the following diagrams indicates the changes in pressure and temperature co...

A: Metamorphism is alteration of rock this change in rock occur mostly due to pressure and temperature ...

Q: What is the greenhouse effect? Is it always detrimental? What gases contribute to the greenhouse eff...

A: One of the factors affecting the earth's natural environment is the effect of global warming. Climat...

Q: The Hubble law compares what two variables?   a. distance and size   b. apparent velocity of...

A: In Hubble law, the velocity of galaxy is directly proportional to the distance from the origin. 

Q: Explain how Cepheid variables are used to determine distances to nearby galaxies.

A: Firstly, let us discuss something about Cepheid, Cepheid: An American molecular diagnostics company

Q: Modern observations show that the universe is   a. open.   b. closed.   c. flat.   d....

A: The observable-universe is in the shape of a ball consisting of matter which can be viewed from-eart...

Q: 2) This is a measure of the amount of groundwater that can be stored by rock or sediment. A) Capil...

A: Groundwater, where all or part of the landless spaces is located in the ground or a geologic line. I...

Q: How old is the earth

A: In 1898, Marie Curie discovered a state of radioactivity, in which unstable atoms lost energy, or de...

Q: 2. What is typically the determining (limiting) rate when large crystals form? Explain.

A: Crystals are formed due to the cooling and solidification of magma. This is because the solution is ...

Q: The Jovian planets have all of the following characteristics EXCEPT   a. low average density. ...

A: The Jovian planets are also called gas giants as they are mostly made from hydrogen and helium gases...

Q: True or False 1. As societies evolve from primitive to agricultural to industrialized, the daily per...

A: The human civilization has evolved from primitive agrarian to modern technological one. This can be ...

Q: what is matter

A: The universe is all the time and space that includes all the galaxies, stars, planets, and all forms...

Q: Which of the following are the three dimensions of sustainability? A. Environmental, social, and...

A: Sustainable development is the idea that human societies must live and meet their needs without comp...

Q: 17. What is a diapir? Where in the Earth is diapiric rise of magma most likely? Why?

A: Salt domes have infiltrated more youthful layers and moved close to the surface. They in some cases ...

Q: 3) An aquifer with well sorted grains will have a greater porosity than an aquifer with poorly sorte...

A: Groundwater is the sub-surface water underlying below the earth's surface. The groundwater is trappe...

Q: The time in years equal to the distance to the galaxy in light-years is called   a. the time-dis...

A: The time in years equal to the distance to the galaxy in light-years is not termed the time-distance...

Q: Which type of pollution is the primary target of the Clean Water Act? A:Point B: Nonpoint

A: The clean water act is a U.S. federal law that controls the discharge of pollutants into the surface...

Q: Which type of rock is rich in minerals (Igneous, Sedimentary, Metamorphic)?  Explain.

A: A rock, in geology, a natural and cohesive collection of one or more minerals. Such aggregates form ...

Q: Which major galaxy classification has the greatest variation in size and mass from dwarf to giant? ...

A: Elliptical galaxies show different properties varying from dwarf to giant one.

Q: Describe the hydrologic cycle in a lake and wetland ecosystem and predict the environmental conseque...

A: Lakes and wetlands are a type of swamping ecosystem in which wetland ecosystems are the swamping tha...

Q: Very cold, low-density dust disks around some stars have been found in which of the following wavele...

A: Option e i.e. gamma ray will be right answer.

Q: Which of the following is true about GMO's? A. The modification of crop genes by humans is a new ...

A: The living organisms that have been used in increasing the yield and productivity of the crops by ma...

Q: What is the area of Sólheimajökull rounded to the nearest whole number?   8 square miles ...

A: It is the largest glacier in Iceland, nicknamed the stinking river due to the presence of sulfuric a...

Q: How do comets differ from asteroids?

A: The asteroids and the comets are both moving celestial-objects that orbit the-sun and they have unus...

Q: What is the chance that stars from two interacting galaxies will collide?   a. fairly certain ...

A: The distance between the stars are nearly 100 billion miles and the analogous to one ping pong ball ...

Q: 33) Which combination will most likely lead to liquefaction during a high-magnitude earthquake? A)...

A: Earth science is the study of the Earth and the various processes that are going on in the Earth sys...

Q: 13) Which one of the following would NOT be an indication of glacial activity? A) Sharp mountain r...

A: Glacier are huge dense ice body which are in a constant state of motion due to its own weight.  glac...

Q: The solar nebula theory describes how the planets formed from   a. the capture of planetesimals ...

A: Option d will be the correct answer.