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How many moons fit inside the Earth?

Earth's moon is smaller than the United States in diameter. The Moon also has no atmosphere and one-sixth of the gravity of Earth. According to NASA, the Moon is approximately 4.5 billion years old, and it likely formed from the leftover damage when a celestial body about the size of Mars collided with Earth.

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How do you balance the chemical equation CaCl2 + Na2CO3?

The stoichiometric coefficient indicates the amount of each compound needed to balance the number of atoms of each element on the left and right sides of the equation. Balanced equations typically use whole numbers only for the stoichiometric coefficient. The stoichiometric coefficient is one for CaCl2, one for Na2CO3, one for CaCO3 and two for NaCl. The two in front of the NaCl indicates two molecules of NaCl produced.

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What are crustal plates and how do they move?

Convection currents move very slowly in the Earth's mantle and cause horizontal continental drift over tens of millions of years. The layer beneath the crust and upper mantle, called the aesthenosphere, is partially fluid because of heat and decay. This hot, thick liquid is what shifts the crustal plates.\nContinental borders fall into one of three categories: convergent, divergent and transform. A convergent plate boundary is when two plates come close together. A divergent boundary is the opposite. A transform boundary occurs when two plates move side to side relative to each other.\nAl..

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Why is the small intestine so long?

The small intestine is so named because it has a relatively small 1-inch diameter, compared to the large intestine's 2 inches, reports Innerbody. The small intestine is part of the gastrointestinal tract, along with the stomach and the large intestine (also known as the colon), explains Healthline. The absorption surface of the small intestine is actually over 650 feet, thanks to the villi and microvilli tissues that cover the intestinal walls and increase the absorption area.\nIt takes food between six and eight hours on average to pass through the stomach and small intestine, according ..

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What are the layer of gases that surround the Earth?

The atmosphere is composed of approximately 79 percent nitrogen and 21 percent oxygen, with small amounts of carbon dioxide and other trace gases present. The innermost layer, known as the troposphere, is where the atmosphere is the densest. This layer extends between four and 12 miles outward from the surface of the Earth, and it is where weather occurs.\n\nOutside the troposphere is the stratosphere, which extends out to about 35 miles above the Earth's surface. The air is much lighter, and the temperature is below freezing. Because there is little turbulence in the stratosphere, planes..

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How did life begin on Earth?

Scientists say that the earliest evidence of life on Earth was found in fossilized mats of cyanobacteria in Australia. This fossilized cyanobacteria, called stromatolites, is 3.4 billion years old. This bacteria, which are still around today, are seen as being biologically complex because they have cell walls that protect their DNA. Despite this discovery, scientists believe that life started before this, possibly as far back as 3.8 billion years ago.\nOne of the most commonly talked about theories on how life began on Earth involves organisms that came from a distant world. Scientists who bel..

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What causes a sulphuric smell?

As eggs and other foods rich in sulfur decompose, they release hydrogen sulfide gas. This gas has other origins, including human gut flora. While the human body can absorb some hydrogen sulfide, it is released if certain types of bacteria are plentiful in the presence of sulfur-rich food being digested. Sometimes, groundwater supplies contain natural sources of hydrogen sulfide, but hydrogen sulfide in tap water is also caused by sewage contamination.\nThe hydrocarbons in natural gas are odorless. The sulfuric smell of piped-in natural gas comes from methyl mercaptan, a sulfur compound added t..

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What is the pH of alcohol?

Ethanol is a straight-chain alcohol and it has a hydroxyl group, which causes it to be slightly basic.While ethanol is also called drinking alcohol, which occurs when fruits, vegetables or grains are fermented to produce alcoholic beverages, the result may be either acidic or basic. The fermentation process tends to become more acidic as it progresses. This happens due to the metabolic processes of yeast, which excrete into the beverage through fermentation over time. It is yeast that helps to convert the sugars in the fruits or vegetables into ethanol and CO2.

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Why do seasons occur?

The Earth's tilt means that, as the planet revolves around the sun, first one pole and then the other is closer to the sun. At the most extreme points, parts of one pole are in complete darkness for long periods, while locations at or near the other pole are in perpetual daylight.\nIf the Earth had no tilt at all and rotated straight up and down on its axis, there would be no seasons as they are currently known. While there would still be an equator and poles, with all parts of the planet remaining the same distance from the sun, the seasons would end. Points close to the equator experien..

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Why do the interiors of the Jovian planets differ?

The size of each gas giant affects more than just the state of its core—it also affects the planet’s chemical composition. All the Jovian planets are rich in hydrogen, but because Jupiter and Saturn exert such a massive amount of gravity, the elements found in their cores are very heavy. A liquid layer of metallic hydrogen is located around each rocky core, which includes oxygen and certain metals. It is supposed that the smaller Jovian planets contain only liquid water, as well as other compounds like methane and ammonia, in their cores. The presence of methane lends the two smaller Jovia..

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