In 1943, the astronomer at Mount Wilson who found some spiral galaxies with small, highly luminous nuclei was   a. Carolyn Shoemaker.   b. Maarten Schmidt.   c. Edwin Hubble.   d. Carl Seyfert.   e. Jocelyn Bell

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: plastics

A: Plastic is a range of-synthetic matter that is made from polymers. Due to which they can easily be m...

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: Explain how 21-centimeter radiation is produced from neutral hydrogen.

A: The 21 cm radiation is a kind of electromagnetic radiation that was emitted by neutral Hydrogen(H2) ...

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: A type II supernova   a. occurs when a white dwarf’s mass exceeds the Chandrasekhar limit.   ...

A: A supernova is a huge explosion of a star when it approaches the end of its lifespan. When the star ...

Q: What could be causingmore of the El Niño state than the La Niña state?

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

Q: During the Pleistocene [Select] [ Select ] the only hominins were in Africa the earth's climate was ...

A: The Pleistocene epoch starts from 2,580,000 years before and ends in 11,700 years was included in th...

Q: True or false    For Ocean thermal energy conversion, the temperature difference between warm and co...

A: Ocean Thermal Energy Conversion (OTEC) is a technology that deals with marine renewable energy. Elec...

Q: Explain how the turnoff point of a cluster of stars plotted on the H-R diagram can reveal the cluste...

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

Q: The blue glow from the Crab Nebula is produced by   a. synchrotron radiation.   b. reflectio...

A: The term crab nebula can be at first immediately understood as a co-relation between universal conce...

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: Rift Valley.

A: The rift-valley is a depression in the shape of a line and is found near low lands that are several ...

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: What pieces of evidence have been used in support of Plate Tectonic Theory?     The shape of c...

A: Plate tectonics theory describe the motion of tectonic plates.it state that the tectonic plates or t...

Q: help

A: Note: Since you have posted a question that has multiple parts we will solve the first three parts. ...

Q: Visit the Kaolin Mine in Sandersville GA. Describe the geological environment and the shape of the l...

A: Kaolin- Kaolin is an aluminous clay mineral. Kaolin is a layered silicate mineral and its white clay...

Q: The Crab nebula is   a. a planetary nebula.   b. a Bok globule.   c. an open cluster. ...

A: The term crab nebula can be at first immediately understood as a co-relation between universal conce...

Q: Distinguish among reliable science, unreliable science, and tentative science. What are four limitat...

A: Science is referred to the study of anything present in our Universe. Scientific study includes the ...

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: Describe the basis for the Shapley–Curtis debate.

A: The Milky Way is the world that contains our Close planetary system, with the name portraying the un...

Q: Why were oceanographic conditions at Earth’s poles of interest to scientists?

A: Oceanology is one of the important and modern sciences facing studies to research and gather informa...

Q: Poor clusters   a. contain more than 1,000 stars and are found in the halo of the galaxy.   b...

A: This vast universe is divided into many units, so we have dust, gas, stars and planets form a galaxy...

Q: Distinguish among reliable science, unreliable science, and tentative science

A: Science is referred to the study of anything present in our Universe. Scientific study essentially i...

Q: The Chandrasekhar limit tells us that   a. accretion disks can grow hot through friction.   b...

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

Q: The Hubble Deep Field and the GOODS images reveal tremendous numbers of galaxies. How many galaxies ...

A: The Hubble Deep Field and the GOODS images reveal tremendous numbers of galaxies. More than 100 bill...

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: Explain what causes the temperature to decrease with height in the troposphere.

A: The Earth is enclosed by a blanket of gases called the atmosphere. The atmosphere serves as a protec...

Q: When do El Niño and La Niña usually happen?

A: The EL-Nino and La Nina are episodes of 9-12, months and tend to form during the spring and reach pe...

Q: True or False   1. A rule of thumb for a sanitary landfill for municipal wastes is that one acre is ...

A: A sanitary landfill or a waste landfill is an area in which disposal is done with utmost care and pr...

Q: What do you understand by the term “Climate change”? Whether it’s caused by anthropogenic actions on...

A: Weather and climate are important to describe the atmospheric conditions of Earth. In turn, they aff...

Q: Oceanic crust Continental crust Lithosphere Lithosphere Asthenosphere Oceanic-continental convergenc...

A: Earth is a terrestrial planet, meaning it has a rocky surface primarily made up of silicate rocks an...

Q: topographic map

A: The above shown is a topographic map which is one that shows the earth's surface on a large scale. T...

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: Classify the following hazards according to their types. Write your answer in the corresponding colu...

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

Q: Observations of galaxies and clusters of galaxies reveal that our universe is ___________________ pe...

A: Dark matter is a type of matter that does not interact with electromagnetic radiation in any way, be...

Q: Briefly explain how a pulsar is like a lighthouse.

A: Pulsars are magnetized rotating compact star which emits energy in form of electromagnetic radiation...

Q: Neutron stars are expected to spin rapidly because   a. they conserved angular momentum when the...

A: Firstly, let us discuss something about Neutron stars, Neutron Star: a collapsed core of a massive s...

Q: How do the highest-mass stars end their lives?   a. gently puffing off their outer layers   b...

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

Q: If the sun's gravity is lost and no longer as strong as it used to be what would happen to the Earth...

A: Our solar system is made up of various celestial objects. The planets are held in their orbits by th...

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: We started with 80mm of soil in the mason Jar.  In some cases, after seperation of the sand, silt an...

A: Soil is a combination of clay, silt, sand and organic matters. They together form soil. The mason ja...

Q: If a stellar remnant is in between 0.08 and 0.4 solar masses, the resulting object will be a   a....

A: A star undergoes various evolution in its lifetime. On approaching the limit of this stellar evoluti...

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 is the Schwarzschild radius of the sun?   a. 30 km   b. 9 km   c. 6 km   d. 3 k...

A: Firstly, let us discuss something about Schwarzschild radius, Schwarzschild Radius: The radius of a ...

Q: The energy source at the center of our galaxy   a. is not visible at optical wavelengths.   b...

A: A black hole is contained in the milky galaxy’s centre, having a mass of nearly 4 million solar mass...

Q: What are the types of ocean waves, arranged by disturbing force and wavelength?

A: The waves that are formed on the surface of the oceans because winds are called ocean waves. These w...

Q: 1. Indentify a location on the map where winds should be weak. Mark the place with an X. Explain why...

A: The isobars in a weather map are that it is the lines that connecting equal points of atmospheric pr...

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: 1. For each beach, sketch and explain how the shape of the beach will change through time: a. Indica...

A: The above diagram states a long show transport coming from the western side and moving towards the e...