Please answer the qu

Q: Why does a medium-mass star expand into a giant?

A: A star is a celestial body present in abundant amounts and each star has its galaxy. Our galaxy is a...

Q: please answer

A: The above graph shows the layers of the-atmosphere of the earth. The layer that supports life is kno...

Q: If a galaxy is 20 Mpc away, what is the apparent radial velocity of recession?

A: From Hubble's law v=Hd Here, His the Hubble's constant, dis the distance, and v is the velocity of g...

Q: 22) Please answer the question in the photo

A: The sangay volcano is located at east of the Andean crest and is the southernmost volcano in Ecuador...

Q: What are the advantages and the disadvantages of the following Renewable Energy alternatives?   Sol...

A: We need energy for our day to day use. We have been using various forms of energy such as Fossil fue...

Q: The galactic center of the Milky Way lies in the constellation of   a. Sagittarius.   b. Cyg...

A: A galaxy is a system of stars, stellar remnant, interstellar gas, dust and dark matter. solar system...

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: How has the global average temperature changed since the Industrial Revolution? *       ...

A: Global warming is a heating of earth climate that the normal rate without any natural cause. this ch...

Q: An open, transparent cluster of stars containing 10 to 1,000 stars in a region about 25 parsecs in d...

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

Q: Explain what the gravitational lensing effect on quasars tells us about these objects.

A: Gravitational lensing is a phenomenon where light emitted by objects can bend while passing through ...

Q: please answer question 1

A: The earth system is composed of four subsystems, namely lithosphere, biosphere, hydrosphere, and atm...

Q: Of the following objects, the one that must be a spiral galaxy is a   a. radio galaxy.   b. ...

A: The spiral-galaxies are those galaxies that consist of flat rotating disks and consist stars, dust, ...

Q: A nova is almost always associated with   a. a very massive star.   b. a very young star. ...

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

Q: Among spiral galaxies, what percentage are barred spirals?   a. 10%   b. 33%   c. 50% ...

A: Among the spiral galaxies, 67% of them have barred spirals and the remaining are normal spirals.  

Q: What evidence shows that the big bang occurred?

A: The Big-bang theory is a prevailing-cosmological model for the visible universe, through the large s...

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: Cosmology is the study of   a. the origin of the universe.   b. the evolution of the univers...

A: Astronomy is a branch of science which studies everything in the universe beyond Earth atmosphere. B...

Q: The Schwarzschild radius of a 2-solar-mass black hole is approximately   a. 6 km.   b. 4 km....

A: There are various systems functioning in the outer space. These include celestial bodies and also ma...

Q: please answer question 4

A: The atmosphere is a mixture of different gases that blanket the earth from outer space. The atmosphe...

Q: This project aims to assess the understanding and implementation of the concepts related to the envi...

A: The United Nations Development Program (UNDP) identified a number of long-term objectives by analysi...

Q: What are the sources of organic matter in soil and how soil properties are affected by its applicati...

A: Soil is the uppermost layer of Earth, which is a mixture of minerals, organic matter, gas, water, et...

Q: If the Hubble constant is 70 km/sec/Mpc and the distance to the galaxy is 20 Mpc away, what is its r...

A: The Hubble constant, H0 = 70 Km/sec/Mpc Distance to the galaxy,d = 20 Mpc The recession velocity, v ...

Q: Choose a landslide event from the past 3 months. Write a paragraph describing - the type of mass was...

A: On April 26, 2021, 04:53 Indian Standard Time (IST), a landslide occurred in Lahaul’s Udaipur, Himac...

Q: Boundary type: and Type of plates: How it's formed:

A: The given diagram is of the oceanic continental convergence. There is a clear divide between the oce...

Q: In the supernova explosion of a massive star, 99 percent of the energy is carried out of the core in...

A: Stars are astronomical objects with a luminous spheroid of plasma that is held together by the actio...

Q: The Watest pressure measured in Jupiter's upper atmosphere by the Galileo probe is 22.atm. Calculate...

A: Pressure is that force that is exerted on an object, perpendicularly on a unit area. It is measured ...

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: What are the most important objectives to achieve regarding waste in the U.S.? Is incineration or la...

A: Since there are multiple questions I have answered only the first 3 question . Please re post the fo...

Q: Determine WHEN did Sandy Hook begin growing out into New York Harbor?  In other words, how many year...

A: Sandy Hook is located in the state of New Jersey, United States. It's a barrier spit that just attac...

Q: _________________ can be used to determine the galaxy’s mass if the galaxy is reasonably close so th...

A: Stars are one of the most important parts of the universe and are at the center of the galaxies. The...

Q: please answer

A:   The atmosphere of a planet, such as Earth's, is made up of several layers of gas molecules. The tr...

Q: What happened to primary pollution in eastern China in January and February of 2020: A: Primary ...

A: Primary pollution is pollution that has a primary source i.e. the source which directly emits the po...

Q: A type Ia supernova is believed to occur when   a. the core of a massive star collapses.   b....

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

Q: The mass of a single galaxy might be found by   a. the double galaxy method.   b. the rotati...

A: The double galaxy method can't determine the mass of a single galaxy. The mass of a single galaxy ca...

Q: The rotation curve of a galaxy can be used to determine   a. the relative number of hot young st...

A: The rotation curve of a galaxy can't be used to determine the relative number of hot young stars in ...

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: The very center of the Milky Way Galaxy is invisible at what wavelengths?   a. radio   b. vi...

A: Let us discuss something about Milky Way Galaxy,  contains our Solar System hazy band of light  

Q: 26) In general, the most destructive earthquake waves are the _____. A) P-waves B) S-waves C) ...

A: Firstly, let us discuss something about the earthquake, Earthquake: Shaking off the surface of the ...

Q: Fire suppression has changed the forest structure in multiple ways. Which of the following is NOT a ...

A: Fire suppression is a method of reducing fires, particularly in fire-prone areas. This also includes...

Q: The Algol paradox is explained by considering   a. the degenerate nature of the hydrogen on the ...

A: In astronomy , the Algol paradox is an incomprehensible circumstance when components of a double sta...

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: The speed of a very highly redshifted quasar as determined by the relativistic Doppler formula is ...

A: A quasar is an object that is found in the universe. It apparently has a very illuminated nucleus. I...

Q: If a ball of dough were to experience s1>s2=s3 what would be its appearance? (include in your gen...

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

Q: What is the answer of this question?

A: After the industrial revolution, the concentration of greenhouse gases in the atmosphere has increas...

Q: A ___________________ has a radius of about 10 km and is supported by the pressure associated with d...

A: The neutron star is collapsed core of a large supergiant star it has a mass between 10 to 25 solar m...

Q: please answer question 3

A: The atmosphere is made up of several layers such as Troposphere, Stratosphere, Mesosphere, Thermosph...

Q: Millisecond pulsars that are very old are   a. believed to be the result of mass transfer from a...

A: A pulsar is a spinning compact neutron star or white dwarf with strongly magnetized magnetic poles t...

Q: Good spiral tracers are all   I.   very old.   II.  very young.   III. very luminous.   IV. moving w...

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

Q: Enlist the consequences and main drivers of soil erosion?

A: The Earth is made up of four spheres known as lithosphere, atmosphere, hydrosphere, and biosphere. A...

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 ...