2. For each of the three beaches: a. Determine the direction of longshore drift along the beach by drawing a solid arrow and explain why it will move in that direction.

Q: When material expanding away from a star in a binary system reaches the Roche surface,   a. the ...

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

Q: Roughly 99.9 percent of the energy flowing away from a pulsar is carried as   a. magnetic fields...

A: Pulsar is a magnetized rotating compact star which emits energy in form of electromagnetic radiation...

Q:

A: EIA is the abbreviation of the word Environment Impact assessment. This is supposed to be an authori...

Q: The energy from active galactic nuclei (AGN) is produced by   a. the collision of two spiral gal...

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

Q: Most of the bright lines in the spectrum of the quasar 3C273 are caused by   a. hydrogen.   b...

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

Q: Quintessence is the name of the   a. force that led to the inflationary period of the universe. ...

A: In cosmology, quintessence is a genuine type of energy particular from any typical matter or radiati...

Q: P Question 4 Cows release a gas called methane as they digest their food. Methane is a heat-trapping...

A: Cows are ruminants, implying that microorganisms in their multi chambered stomachs help them digest ...

Q: The Chandrasekhar limit gives the maximum value of   a. a red dwarf.   b. a main-sequence st...

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

Q: What would happent to the moon if it lost inertia?

A: The objects present in space have inertia along with gravity. Inertia in the objects of space contri...

Q: What is the percentage of spiral galaxies that appear to be Seyfert galaxies?   a. 0.1%   b. ...

A: Seyfert galaxies are one of the 2 largest group of active galaxies. Active galaxies are the one whic...

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: 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: When two galaxies just pass near each other, they can cause dramatic effects like long streamers cal...

A: When two galaxies just pass near each other, they can cause dramatic effects like long streamers not...

Q: A soil column of unit cross-sectional area at right angles to thedirection of flow of water and stat...

A: Soil is the uppermost layer of the lithosphere and the earth’s crust. Soil is the skin of the earth....

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: What is the age range of the rocks from the most western province? What dominant rock type makes up ...

A: A fossil is a preserved evidence of the pre-existing life form in the geologic past of the earth. A ...

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: What is the difference between a population I star and a population II star?

A: Firstly, let us discuss something about the star, an astronomical object  consisting of a luminous ...

Q: Help me

A: Hertzsprung Russell diagram or H-R diagram is a plot of star where all stars are placed with respect...

Q: Starburst galaxies   a. contain a large number of very young stars, but very little evidence of ...

A: Starburst galaxies do not contain a large number of very young stars. Starburst galaxies do not cont...

Q: If the Hubble constant equals 70 km/sec/Mpc, then a galaxy with a radial velocity of 2,100 km/sec ha...

A: Hubble constant, H0 = 70 Km/sec/Mpc Radial velocity, v = 2,100 Km/sec Distance to a galaxy,d = Radia...

Q: The escape velocity of an object depends on   I. the mass of that object.   II. the mass of the obje...

A: Escape velocity is the minimum speed which is required for a free object to escape from the gravitat...

Q: This map shows the continents as they appear on Earths surface today. It would be correct to say tha...

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

Q: Investigate hazardous and toxic wastes.

A: Wastes are unwanted substances that have been discarded after their primary use. Every year almost 2...

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: The blue area is the ocean floor, while the green and brown area is dry land. Which of the following...

A: Aerial photographs are pictures taken from above the land from a kite, or a drone or even from an ai...

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: What is the role of land capacity classification in soil and water conservation? Enlist major types ...

A: The earth’s surface is made up of the crust is a composition of rocks, soil, minerals, organic matte...

Q: How does a sanitary landfill differ from an open dump?

A: Landfill are places where waste material is kept, usually away from human population. This waste is ...

Q: In what nonmarine settings do gravelly sediments often accumulate?

A: Gravelly sediments or gravels are clastic sediments that lie in the size range of 4.75 mm to 75 mm, ...

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: The Coma cluster   a. is the galactic cluster that contains the Milky Way.   b. is the oldes...

A: The galactic cluster that contains the Milky Way is the Virgo supercluster.  Coma cluster is not the...

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: What is the difference between a type Ia, a Type Ib, and a type II supernova?

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

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: 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: As a star exhausts hydrogen in its core, it   a. becomes hotter and more luminous.   b. beco...

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

Q: Chart the evolutionary process of a medium-mass star like our sun on the H–R diagram from the zero-a...

A: The graphical tool used by the astronomers for the classification of stars according to color, spect...

Q: Supermassive black holes are believed to be located at the center of many galaxies because   a. ...

A: Supermassive black holes are believed to be located at the centre of many galaxies, not because the ...

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

A: Elliptic galaxies: These galaxies appear as "elliptical" or oval discs. We notice that the light is ...

Q: Who first calibrated the Cepheid variable stars for use in determining distance?   a. Henrietta ...

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

Q: ___________ galaxies contain large clouds of gas and dust, both young and old stars, but have no obv...

A: Irregular galaxies contain large clouds of gas and dust, both young and old stars, but have no obvio...

Q: Which of the following offers evidence that supports the theory that quasars are the nuclei of very ...

A: A quasar is a very glowing dynamic galactic core, wherein a super massive dark opening with mass goi...

Q: In 1943, the astronomer at Mount Wilson who found some spiral galaxies with small, highly luminous n...

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

Q: Explain why “standard candles” are so vitally important in astronomy.

A: Cosmic distance ladder are methods which are used by astronomer which help in determining distance o...

Q: Planetary nebulae are   a. the expanding shells of a dying star.   b. the site of planet for...

A: Planetary nebula by the word can be understood as a universal concept related to planets but that is...

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: True or False    Costs for deep-well disposal are comparable to those associated with "secure" landf...

A: Mining, petroleum extractions, and nuclear power plants continuously produce sufficient resources fo...

Q: Summarize how the fossil record, geological timescale, andbiogeography each provide evidence in supp...

A: Firstly, let us discuss something about evolution, Evolution: The change in the characteristics of a...

Q: Which do you think is the most common type of rock on the surfaceof the Earth? (Igneous, Sedimentary...

A: The rock-cycle is made of igneous metamorphic and sedimentary-rock types. These rocks undergo transi...