Synchrotron radiation is produced by a. objects with temperature below 10,000 K. b. high-velocity electrons moving through a magnetic field. c. cold hydrogen atoms in space. d. the collapsing cores of massive stars. e. a helium flash.

Q: What arguments favor the idea that little atmospheric oxygen existed on Earth until slightly before ...

A: Our planet's atmosphere has, throughout history, contained much less oxygen than has been assumed un...

Q: How do the different geological hazards affect the Earth’s subsystems? how can you help the victims ...

A: Let us discuss something related to geological hazards, Geological natural hazards are earthquakes, ...

Q: What is the identity of this fossil? Brachiopod   Trilobite Gastropod Ammonit...

A: This is a trilobite fossil.

Q: 1. Differentiate El Niño and La Niña using the above pictures 2. Why is Pacific Ocean sometimes call...

A: Climate is the long-term average of weather pattern. It is an average of weather pattern of almost 3...

Q: What is a fossil? Is a footprint a fossil?

A: The study of earth science has a distinct branch of study where we study the fossils found preserved...

Q: Explain the major characteristics of the two oceanicdivisions.

A: The oceans are the only thing on the earth that acquires the most of the area under it. The land sur...

Q: 1.) What is the basis for dividing the atmosphere into four layers?

A: The atmosphere is the blanket surrounding the environment. This blanket consists of various layers d...

Q: Describe how tidal power or ocean wave power generate electricity.

A: Energy is very much essential for human civilization. For different establishments in human civiliza...

Q: Helium fusion occurs at temperatures above   a. 6000 K.   b. 15,000,000 K.   c. 100,000,...

A: Fusion is a process in which 2 or more nuclei act upon each other and combine to form a new and heav...

Q: How is seawater’s salinity expressed?

A: Water bodies on earth occupy the largest area. Oceans are the bigger versions of Seas. The seawater ...

Q: As the ancestors of plants moved from water to land, they faced new problems and new advantages in t...

A: Earth is the third planet in the solar system. It formed almost 4.5 billion years ago. It is the onl...

Q: The star Algol is   a. an astrometric binary.   b. a single line spectroscopic binary.   ...

A: The  star Algol can be visible easily changing its brightness, when it is at its highest brightness ...

Q: If the orbital velocity of an eclipsing binary is 97 km/sec and the smaller star is completely eclip...

A: Orbital velocity = Diameter of the startime 97 km/sec = Diameter of the star7,200 sec Diameter of th...

Q: Genetic classification uses ____________________ to identify and study different types of rock.

A:  Genetic classification uses the texture and composition of a rock to classify it.

Q: Stars within a cluster that are at the turnoff point   a. have life expectancies that are equal ...

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

Q: In a distant planetary sytem, a plant is at a distance of 2 AU from its star. the brightness of the ...

A: INTRODUCTION: The luminosity of a star is described as the net electromagnetic radiation which a sta...

Q: Begin an annual list of climate-related events where you live—for example, dates of first flowering;...

A: Climate is the condition of the weather that prevailed for a longer period over a specific area. Thi...

Q: State 3 effects of each of the following when it hits land. A. Hurricanes B. Typhoons C. Tornadoes

A: (A) Impacts of Hurricanes on Land It affects natural environment in coastal environment It damages ...

Q: Why is plastic so dangerous to marine organisms?

A: The ocean is home to a variety of organisms. The increasing use of plastic and plastic pollution in ...

Q: Discuss the impacts and classifications of the various natural disasters.

A: Disaster- Natural disasters are the consequences of natural events which impose a negative impact on...

Q: If you see a star cluster that only has red stars, what does that tell us about its age?

A: Stars are those parts of our universe that are at the center of galaxies. Sun is the center of our s...

Q: Name and describe the layers of Heterosphere.

A: The heterosphere is the layer of air that is separated by the molecular mixing of gases. As the mixi...

Q: The reason ocean basins are low and continents are high is that they have contrasting densities beca...

A: Earth is not a homogeneous body and it is composed of various layer which have their distinctive pro...

Q: To determine the period of a visual binary, we must measure   a. brightness.   b. position. ...

A: To determine period of revolution, the astronomers need the distance of binary (position).

Q: ANALYZING. GIVEN THE FOLLOWING SCENARIO, ANSWER WHAT IS ASKED.  1. Bert is an engineer and was curre...

A: A hazard is any agent that can cause harm to humans and the environment. Risk is the possibility of ...

Q: Describe the difference between a reflection nebula, an emission nebula, and a dark nebula and what ...

A: A nebula is a gaseous and dusty interstellar cloud. It is located in the dense region of interstella...

Q: Thinking Critically How is a population different from a community? A niche from a habitat?

A: The environment is all the living and non-living organisms in an area. This term is often applied to...

Q: A white dwarf is composed of   a. hydrogen nuclei and degenerate electrons.   b. helium nucl...

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

Q: What are green plans?

A: Every year as the world is facing environmental issues there are a lot of strategies that have been ...

Q: . What is ‘water economy’ of plant and how it could be disturbed by pathogens? Give suitable example...

A: An economy is a broad collection of interconnected creations and their usage activities that help de...

Q: A 7.5 Richter magnitude earthquake is ______-- times more powerful than a 4.5 Richter magnitude eart...

A: Earthquake are cause by sudden movement of fault inside earth which releases the energy which is sto...

Q: ____________________________ is the thermonuclear fusion of hydrogen to form helium operating in the...

A: Nuclear fusion is a process in which 2 or more atomic nuclei are combined to form one or more differ...

Q: The air drawn into a thunderstorm from the outside is usually cooler than the air within a cumulonim...

A: Lighter air move vertically upward due to rise in temperature. As the temperature of air increases, ...

Q: I read that there was a second earthquake near Sumatra on 28 March 2005. It measured 8.7—nearly the ...

A: The surface of the earth is divided into about a dozen large pieces, called tectonic plates that mov...

Q: How would western Europe’s climate change if the Gulf Stream slowed?

A: The Gulf Stream is critical to the worldwide environment since it gives directing temperatures on ad...

Q: Please help

A: The temperature of a region is the amount of heat present in that region. It is influenced by variou...

Q: The wavelength region of the electromagnetic spectrum in which protostars are most easily observable...

A: Protostar is a very young star which has still to form or gather mass from the cloud or gas from whi...

Q: How are the ocean’s trenches formed? How are earthquakes related to their formation?

A: According to the plate tectonics theory, the surface of the Earth is made up of various hard lithosp...

Q: How can wind-driven horizontal movement of water induce vertical movement in surface water?

A: The rise and fall of water in the oceans and seas is referred to as the vertical motion of water. Th...

Q: A planetary nebula is   a. the expelled outer envelope of a medium-mass star.   b. produced ...

A: Ever since the beginning of the Universe, matter and energy were created. These matters and energy e...

Q: Why do mountains have roots?

A: The Earth's interior is divided into four layers- crust, mantle, outer core, and inner core. The den...

Q: Please answer the question in the photo

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

Q: We seem instinctively to know whether something is alive or not. How do you suppose we make that jud...

A: When we look around we see many thing around us like cars, building , animals, mountains, rivers etc...

Q: The diagram below shows the Earth, Sun, and Moon system. S U Y G H

A: Tides are irregular waves that arise in the oceans as a result of the moon’s and sun's gravitational...

Q: Describe some emergent properties of ecosystems.

A: The ecosystem is the combination of natural habitats including biotic and abiotic components of natu...

Q: How can very cold clouds make very hot stars?

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

Q: At the end of the Cretaceous, a mass extinction event caused the dinosaurs to go extinct. Many scien...

A: Climate is the long-term average of weather also it measures the variability of mereological factor ...

Q: What evidence do fossil bones and teeth provide that amphibians evolved from fishes?

A: Earth is the third planet in the solar system. It formed almost 4.5 billion years ago. It is the onl...

Q: ANALYZING.  GIVEN THE FOLLOWING SCENARIOS, ANSWER WHAT IS ASKED.  A storm hit a certain area. After ...

A: A storm is an extreme condition of disturbance of the weather. During it, fierce winds, lightning, a...

Q: Why does our relatively small Moon have a greater tidal effect on Earth than the gigantic Sun?

A: Tides are long-period waves that move through ocean and water bodies. They occur due to the gravitat...