Which worked with Milton Humason in the 1920s to measure distances to a number of galaxies using Cepheid variable stars?   a. Albert Einstein   b. Edwin Hubble   c. Jocelyn Bell   d. Stephen Hawking

Q: Gamma-ray bursts were first discovered by data from satellites designed to   a. see supernovae. ...

A: Gamma ray burst are energetic explosion which are observed in distant galaxies. They are brightest a...

Q: what is the relationship between air pressure and altitude?

A: Planet Earth has a blanket of air, covering the whole planet. We call this the Atmosphere. It may se...

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: Using the figure below, which soil profile is more developed? Why? Ah BI Bw

A: Since you have asked multiple questions only first one will be answered. If you need an answer for a...

Q: Stars with masses between 0.4 M and 4 M   a. undergo thermonuclear fusion of hydrogen and helium...

A: The universe is formed around 13.8 billion years ago. At the time when it got formed, it was a size ...

Q: Gravitational lensing   a. occurs when light passes near a massive object and is deflected by th...

A: Gravitational lensing (GL): It is an effect that causes a change in the direction of the path of lig...

Q: List five to ten effects of changing climate.

A: The average weather of any location which is affected by its attitude, altitude as well as oceans an...

Q: What is the difference between open clusters and globular clusters?

A: Our universe consists of several planets, galaxies, meteorites, asteroids, dark energy, black holes,...

Q: VI.In 2 (two) sentences, describe the rainy and dry seasons in the Philippines.

A: Season is a period or time of a year which are characterised by a special climatic condition, there ...

Q: What is the answer of this question?

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

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: What is the answer of this question?

A: “Since you have asked multiple questions, we will solve the first question for you. If you want any ...

Q: Without looking ahead, can you think why the peak of the hill is offset to the west? Would it also b...

A: The Ekman transport is defined as the sum of movement of all water layers because of the Ekman spira...

Q: In A.D. 1054, Chinese astronomers observed the appearance of a new star, whose location is now occup...

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

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: List 5 of the largest 13 cities in 2016.

A: The large cities : is a series of nearly contiguous metropolitan areas, which may be somewhat separa...

Q: Why do scientists expect galaxies to collide fairly often?   a. Galaxies are large with respect ...

A: Scientists expect galaxies to collide fairly often large with respect to their separation distance. ...

Q: What are the effects of El Niño and La Niña? List down at least 3 each.

A: Firstly, let us discuss something about  El Niño and La Niña: La Nina is a coupled ocean-atmosphere ...

Q: Stars less than 0.4 solar masses   a. will have a helium flash.   b. are totally convective....

A: Stars are luminous giant plasma balls.  There are billions of stars in our Milky Way galaxy, includi...

Q: What happens in convergence zones? How is caballing associated with convergence zones?

A: A convergence zone is a location where ocean water blends. They typically form at the confluence of ...

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: Explain what solar wind is and how its related to the formation of Aurora Borealis. Draw a diagram t...

A: A natural electrical phenomenon portrayed by the presence of decorations of rosy or greenish light i...

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: A planetary nebula   a. produces an absorption spectrum.   b. produces an emission spectrum....

A: A planetary nebula is an astronomical object consisting of a glowing cloud of gases and plasma forme...

Q: The method of finding galactic mass by measuring the radial velocities within a cluster is   a. ...

A: The double galaxy method is not used to determine the galactic mass by measuring the radial velociti...

Q: When were neutron stars first predicted?   a. 1806   b. 1932   c. 1967   d. 1983

A: The neutron-stars are the densest-objects in the universe have a force of-gravity that is about 1011...

Q: Fill in the information below for Folded Mountains. Plate Boundary: and Types of Plates: How they're...

A: Tectonic plates are piece of earth crust and upper mantle which together are called as lithosphere. ...

Q: What are ecosystem services? Give several examples.

A: Ecosystem occur in a geographic space where all the living and non-living things interact with respe...

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: If you replaced our sun with a one-solar-mass black hole, Earth would   a. be sucked into the bl...

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

Q: The supermassive black hole at the center of the galaxy is estimated to be   a. 4 solar masses. ...

A: The Supermassive Black Hole(SBH)s are a type of black hole which has high mass and less volume locat...

Q: What actions could be taken to reduce rainwater runoff in cities?

A: The earth's system is composed of four subsystems, namely the hydrosphere, lithosphere, atmosphere, ...

Q: Describe how William Herschel first mapped the Milky Way Galaxy.

A: The Milky-Way is a spiral galaxy that consists of our solar-system and forms a haze band of light-se...

Q: Earth Science Question

A: Firstly, let us discuss something about the Atacama Desert, The driest non-polar desert in the world...

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: Aerosol perturbations to climate are distinctly different from greenhouse gases because they (select...

A: The greenhouse gases are very important to the earth because they trap the long-wave radiations emit...

Q: A farmer is evaluating four methods of preventing farm runoff from reaching the nearby streams and r...

A: Farm runoff is the flow of water from fields when there is irrigation, rain, and melted snow water, ...

Q: Give examples of species that have become extinct. What percentage of species in Earth’s history hav...

A: Species extinction refers to the loss of biodiversity of flora and fauna from the surface of the pla...

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: In a tsunami set off by a subduction-zone earthquake, why might the seafloor rise up while coastal l...

A: A Tsunami is a succession of enormously large waves which result due to earthquakes occurring in the...

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: 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: 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: In 1970 the deer population of an island forest reserve about 518 square kilometers in size was abou...

A: The population is defined as a distinct group of individuals. It can signify the people of a nation ...

Q: On September 25, 2003 two earthquakes shook Hokkaido, Japan. The second earthquake released 10 times...

A: Let the energy of first earthquake= E1 and its magnitude = M1 energy of second earthquake= E2 and it...

Q: Describe how evolution produces species diversity.

A: Evolution is a gradual process that leads to change in the characteristics of a species over generat...

Q: Explain why Cepheid variables are considered “standard candles.”

A: Cepheid variables are the stars that pulsate with a frequency proportional to their absolute magnitu...

Q: Once an aging star blows its surface into space to form a planetary nebula, the core   a. explod...

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

Q: The gravitationally bound volumes surrounding a binary system are called   a. bipolar flows. ...

A: A binary system is an arrangement of two cosmic bodies which are close enough that their gravitation...

Q: Why are pulsars unable to emit pulses of visible light?   a. Pulsars are too hot to emit visible...

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