How rapidly a planet loses its atmosphere depends on the planet’s   I.   mass   II.  atmospheric composition   III. temperature   IV. rotation period   a. I & II   b. III & IV   c. I, II, & III   d. II, III, & IV   e. I, II, III, & IV

Q: The highest annual discharges of a river were statistically analysed for a periods of 60 years. The ...

A: The physical and climatic changes on the earth are occurred by natural calamities since the origin o...

Q: If the redshifts of quasars arise from the expansion of the universe,   a. a quasar must be very...

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

Q: Which of the following statements about benthic foraminifera are true? Some species can live on the ...

A: Foraminifera are protists, which are neither plants nor animals. However, at times they show charact...

Q: What is a lake? Are lakes temporary or permanent? Explain. a. Give one example and explain how it fi...

A: Earth is the third planet in the solar system and a terrestrial planet as well. The earth's surface ...

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: What is the greenhouse effect? Is it always detrimental? What gases contribute to the greenhouse eff...

A: One of the factors affecting the earth's natural environment is the effect of global warming. Climat...

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: 39) Please answer the question in the photo

A: A fault is a break or zone of cracks between two squares of rock. Flaws permit the squares to move c...

Q: The Large and Small Magellenic Clouds are best described as ________________ galaxies.   a. spir...

A: The Large and Small Magellenic Clouds are two irregular dwarf galaxies orbiting or galaxy, Milky Way...

Q: What is the difference between a spiral galaxy and an elliptical galaxy?

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

Q: china’s position as the top emitter of greenhouse gasses is a direct result of…

A: The GHG that is greenhouse gases is a gas that absorbed and emits radiant energy. It can be found wi...

Q: Is this a place that is likely to have a lot of people living there?

A: Temperature and precipitation of one area determine the extent of growth of flora and fauna. Humans ...

Q: Fill in the table with the needed information about the global climatic phenomena.

A: Climate is the average weather pattern of a region. It is the average of almost 30 years of weather ...

Q: Fill in the table with the needed information about the global climatic phenomena.

A: Global climatic phenomena are the naturally occurring events that bring about climatic and atmospher...

Q: Whether the universe is open, closed, or flat depends on the _______________________ of the universe...

A: Universe is all the space and time and all of its content which include galaxies, stars, planets, co...

Q: Describe the P-T path in terms of metamorphic grade for shock metamorphism of country rock during a ...

A: Shock metamorphism is the metamorphism of a rock by meteorite impact. The P-T path of metamorphism u...

Q: how do you compare climate on land and climate from the eea

A: The climate is an atmospheric phenomenon and climatic system related to the overall climatic pattern...

Q: Quasar distances are estimated by   a. observations of Cepheids within them.   b. observatio...

A: Quasars are luminous galactic object which have very high luminous nucleus, in which a supermassive ...

Q: Rivers and stream ecosystems are described to be one of the highly productive in biodiversity. Compa...

A: River and stream ecosystems are both types of flowing water ecosystems in which streams from minor l...

Q: According to the accretion theory, short-lived radioactive elements generated heat and caused the in...

A: According to accretion theory, before the Earth formed, the solar system was a solar nebula which is...

Q: The most spherical elliptical galaxies would be classified as   a. E0.   b. E3.   c. E5....

A: In Hubble classification, E0 galaxy is most spherical because for it, the major axis is equal to its...

Q: In the unified model of active galactic nuclei, the broad line region in an active galactic nucleus ...

A: An Active Galactic Nuclei (AGN) is present in active galaxies. This is an area in a galaxy where it ...

Q: Seyfert galaxies   a. are more common in close pairs of galaxies than in isolated systems.   ...

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

Q: If a galaxy has a radial velocity of 700 km/s and the Hubble constant is 70 km/s/Mpc, then the dista...

A: The radial velocity, v = 700 Km/s The Hubble constant, H0 = 70 Km/sec/Mpc Distance to the galaxy, d ...

Q: As the falling temperature of the universe reached 3000 K, protons were able to capture and hold fre...

A: Ever since the first sequence of galaxies came into existence, it was known to cause the termination...

Q: The solar system has relatively little gas and dust between the planets. The lack of this material i...

A: Option d will be the correct answer.

Q: 37) Below you see the seismographs of an earthquake as recorded at four different seismic stations. ...

A: Earthquake is vibration of surface of earth.  Seismic waves are generated when earthquake occurs. Th...

Q: Which major galaxy classification contains no visible gas or dust and lacks hot bright stars?   a...

A: Near about 13.8 billion years ago our universe got formed. At the time when it got formed it was a s...

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 interiors of Jupiter and Saturn consist mostly of   a. icy rock in solid form.   b. soli...

A: Option b will be the correct answer.

Q: Can anisotropic crystals apprear isotropic when seen under cross-polars? Explain with regards to uni...

A: Minerals are naturally occurring substances that have a specific chemical composition and a fixed ph...

Q: The cosmological principle states that the universe is   I. expanding.   II. accelerating.   III. ho...

A: The cosmos is a large space where all the stars, planets, celestial bodies and other matters exist. ...

Q: How many galaxies are visible with today’s telescopes?

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

Q: 2. a) What is radioactivity? b) A point source of gamma radiation has a half life of 45.0 minutes. A...

A: 2. a) When unstable atoms change their configuration and disintegrate to form stable atoms, they rad...

Q: Q2: The Herbridean craton (Lewisian complex) makes up a significant proportion of the NW Foreland. O...

A: The Hebridean craton is part of the Lewisian complex that was deposited during the Precambrian perio...

Q: When a proton and an antiproton collide,   a. they destroy each other and produce energy in the ...

A: Annihilation is a process in which subatomic particle collide with its respective antiparticle(Which...

Q: Outgassing is   a. the adding of material to an object an atom or molecule at a time.   b. t...

A: There are different places on the earth surface or interior from which gas is released , such gas ca...

Q: How would the angles of the dance differ during the winter vs. during the summer? (hint: where does ...

A: The exact location in both summer as well as in winter varies for sun rise and sun set.

Q: Which type of rock is rich in minerals (Igneous, Sedimentary, Metamorphic)?  Explain.

A: A rock, in geology, a natural and cohesive collection of one or more minerals. Such aggregates form ...

Q: 4 The image above shows a set of objects found in the sky. The Sun is the same type of object. But t...

A: Star is an astronomical object which has a sphere of light around it due to plasma and are hold toge...

Q: Match column A with the correct answers in Column B.Write the letter of your choice in your activity...

A: Volcanoes are a natural phenomenon that occurs around us, which are craters from which vapors, gases...

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 first picture is soil profile A, and the second picture would be Soil profile B.

A: Figure 1- The top layer is Ah. The suffix h represents that the soil has considerable amount of orga...

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: What is the importance of studying and using relative and absolute dating nowadays.

A: Geology is the branch of science that studies the Earth. Geology studies the past, present, and futu...

Q: Rotation curves of galaxies show that the centers of galaxies must be very massive and probably cont...

A: Rotation curves of galaxies show that the centres of galaxies must be very massive and probably not ...

Q: Although many theories have been proposed to explain the origin of the planets, nearly all modern as...

A: Firstly, let us discuss something about planets, Planets: orbits a star have gravity to have squeez...

Q: MULTIPLE CHOICES 1. Which of the following are ways by which you can help prevent global warming fr...

A: Global warming is the increase of the temperature condition globally. The warming up of the globe is...

Q: The condensation sequence suggests that _______________________ should condense closest to the sun. ...

A: Metals are the heavier materials than the silicates, gases, ice, and dust particles. Thus, they conc...

Q: Explain how a radioactive isotope can be used to determine the age of a sample of rock or other subs...

A: Dating or rock dating is method to find age of different rocks (igneous ,metamorphic or sedimentary ...