The Search for Extra-Terrestrial Intelligence (SETI) using radio telescopes began in the   a. 1900s.   b. 1930s.   c. 1960s.   d. 1980s.   e. 2000s.

Q: The _________________ of a planet is the region around the planet where the magnetic field is able t...

A: Atmosphere is a layer air that consist of various element in gaseous state. Its envelopes the planet...

Q: The life zone, or habitable zone, is   a. the region on a planet where conditions are acceptable...

A: The zones in the star where the temperature condition of the planet will lead to the presence of liq...

Q: Evidence for Mercury’s iron core comes from   a. large impact craters.   b. unusually low ov...

A: A planet is an astronomical body revolving around a star. A planet possesses a mass enough to sustai...

Q: Follow direction of the image and choose the correct answer

A: Relative dating is finding age of rock relative to other event or fossils or structure present near ...

Q: The physical changes associated with El Niño events can cause cascading biological events, leading t...

A: El Nino is the warm phase of the El Nino-Southern oscillation. It means "the Christ child" in Spanis...

Q: Evidence that Earth has collided with an asteroid-sized object is suggested by a layer of the rare e...

A: Geology is the branch of science that studies the formation, development, and evolution of the earth...

Q: What are the most prominent current environmental threats?

A: The environment is composed of all living and non-living things. The term is often used to describe ...

Q: What is sustainability? Explain why learning from the earth is a key to learning to live more sustai...

A: The world is filled with various components. Some components get extinct over time while the other c...

Q: What is the relationship between grain size and energy level?     The larger the grain size hi...

A: The rock particles are everywhere in our environment and are liable to move from one place to anothe...

Q: The table below shows the energy consumption used in the US from various energy sources. According t...

A: According to the chart given above, there is energy consumption from both renewable and non renewabl...

Q: What is the answer of this question?

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

Q: The discovery of Neptune was made as the result of   a. a study of planetary nebulae.   b. a...

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

Q: Earth’s core has a solid center and liquid outer parts. Evidence for the liquid component of the cor...

A: Crust, mantle and core are the divisions of the earth. The crust is the outer layer of the planet. T...

Q: Studies show that the short-period comets cannot originate at a distance thousands of astronomical u...

A: The universe got formed around 13.8 billion years ago. It consists of several numbers of celestial b...

Q: Evidence of liquid water existing in the Martian past was found by the discovery of   a. meander...

A: Today all the water on Mars is ice, although it is small enough to evaporate into the atmosphere. Sh...

Q: Identify what type of rock belongs to the rock in the photo (igneous, sedimentary or metamorphic roc...

A: Rock is solid substance naturally occurring aggregate of mineral or sediments matter. Different rock...

Q: What type of symmetry is shown in this image?

A: Symmetry of an organism is uniformity in body parts on a plane around an axis. Symmetrical organism ...

Q: The gas tail of a comet always   a. trails behind the head along the orbital path.   b. exte...

A: Comets are mostly dirty frozen balls of only a few kilometers in radius when away from Sun. As soon ...

Q: The Huygens probe to the surface of Titan revealed   a. pebble-sized chunks of ice.   b. liq...

A: Huygens Probe was an advanced robotic probe that landed on Saturn's moon Titan in January 2005. It t...

Q: Jupiter’s belts and bands are the result of atmospheric features that have been   a. brought up ...

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

Q: How can non-professional astronomers help with the SETI search?   a. They can use radio telescop...

A: The SETI stands for the search for extraterrestrial intelligence, that finding the extraterrestrial ...

Q: What percent of Earth's total global water is freshwater? Options: 2.5%, 10%, 50%

A: Earth is a terrestrial planet, meaning it has a solid rocky surface. The Earth's surface is primaril...

Q: The oval patterns of grooves is the correct answer. (ovoids) on the surface of Uranus’s moon Miranda...

A: Option d will be the correct answer. 

Q: How is plate tectonics related to continental drift and seafloor spreading?

A: The Earth consists of a solid outer plate called the lithosphere and is about hundred kilometers thi...

Q: Carbonaceous chondrites   I.   contain mostly iron and nickel.   II.  contain volatiles.   III. cont...

A: Carbonaceous Chondrites are a type of chondrite with a wide range of properties. They are important ...

Q: Answer question 9 showing fully all the steps. Solution should be simplified and easy to understand ...

A: Transmitter and receiver stations are part of a communications network that facilitate communication...

Q: What are minerals?     Organic substances with variable structure and chemical formula    ...

A: Minerals Minerals are the natural inorganic chemical compounds, which have definite and fixed chemic...

Q: Spacecraft images of the nucleus of Comet Halley show jets of gas and dust emanating   a. from t...

A: Comet Halley, also addressed as 1P/Halley, is a short-period comet that is visible from Earth every ...

Q: Earth Science Question

A: The third planet of the solar system is our earth which rotates on its axis and revolves around the ...

Q: What is a Plutino and how are these objects connected to Pluto?

A: The solar system is a gravitationally bound system around the sun. It has 8 planets, their moons, as...

Q: An offspring born with altered DNA because of errors in reproduction   a. is called a mutant. ...

A: By analysing the question We need to find An offspring born with altered DNA because of errors in re...

Q: The grooved terrain on Ganymede is believed to be   a. volcanic activity on the surface.   b....

A: Ganymede is known to be a satellite of the planet of Jupiter. It is one of the large natural satelli...

Q: Why are the volcanoes on Mars so much larger and higher than the volcanoes on Earth?

A: The solar system consists of several planets. The earth is the third while the Mars is the fourth pl...

Q: The Roche limit is   a. the distance from the sun within which a planet can not retain an atmosp...

A: All the celestial bodies are shaped and held together by their own gravity. The celestial bodies are...

Q: Where is the water that used to flow on the Martian surface now?

A: The solar system is the gravitationally bound system around the sun. It has 8 planets, moons revolvi...

Q: Discuss the mechanisms by which no-till farming would store more C in the soil.

A: While operating on no-till farming methods, soil destruction is marginal or limited. In conventional...

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

A: Lakes are region of earth surface which are filled with water such lakes are placed in basin and dep...

Q: The orbit of earth's moon has a period of 27.3 days and a radius (semi - major axis) of 2.57 times 1...

A: Given- T=27.3 days=27.3×24×60×60 s=2358,720 s r=3.85×105 km The mass of earth can be calculated by u...

Q: The Magellan and Venera spacecraft located similar features, called coronae, on the surface of Venus...

A: Coronae or also known as corona are the oval-shaped feature on the surface of Venus formed due to th...

Q: A meteor shower is produced when   a. a large number of sporadic meteors are observed.   b. ...

A: A meteor shower is a phenomenon in which numerous meteors are observed from one point in the sky. Me...

Q: What are the most valid remedies that governments and the political class can use to protect the eco...

A: The ecosystem is the geographical area where the living organisms live and interact with each other ...

Q: Answer question 8 showing fully all the steps. Solution should be simplified and easy to understand ...

A: Since you have posted a question with multiple sub-parts, we will solve the first three sub-parts fo...

Q: What is the difference between sessile and vagrant organisms?     Sessile organisms swim and v...

A: Aquatic organisms exist in salt and fresh water, and vary according to their sizes, the nature of th...

Q: Large, reasonably flat and dark areas that cover a good portion of the side of the moon facing Earth...

A: The moon is the only natural satellite of the earth and the largest celestial body nearby. Known sin...

Q: ____________________ asteroids are more common in the outer asteroid belt where it is cooler. They a...

A: The asteroid belt is a unique place in the solar system and is situated between the planets Mars and...

Q: Should nations with large ecological footprints reduce their footprints to decrease their harmful en...

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

Q: We can be sure the particles in the rings of Neptune are very small because   a. the rings are f...

A: All Jovian planets are composed of gaseous materials and dust particles. All these planets have a ri...

Q: The very bland appearance of the atmosphere of Uranus is probably caused by   a. the absence of ...

A: Option d will be the correct answer.

Q: What is the evidence that suggests that Mars had large amounts of liquid water flowing on its surfac...

A: Water is a covalent compound made up of two atoms of hydrogen and one atom of oxygen by means of mut...

Q: _____________________ asteroids appear to have nickel-iron compositions and may be from the core of ...

A: The solar system is a gravitationally bound system around the sun. It has 8 planets, their moons, as...