How do meteorites affect the earth?

Answer 1

With great destruction.

Meteorites enter Earth's atmosphere every day. Luckily, the majority are so small #(<2cm)# that they burn up in Earth's atmosphere before ever hitting the surface. Even meteorites that are big enough to not burn up completely are usually only a few metres wide and don't have enough mass to destroy anything big, although if you got hit by one you would probably die.
However, once meteorites start climbing up to #100m# wider or more, that's when things get serious. At this size, meteorites are large enough to start causing some serious trouble around the area they are in, including small earthquakes and and a short nuclear winter within a hundred miles of the impact. Thankfully metorites this large only hit Earth roughly every 10,000 years.
By the time a metorite gets to #1km# wide or larger, it constitutes as a global catastrophe as its effects can start to be felt worldwide. At #10km# wide, it gets classified as an extinction event. The effect of a meteorite this large hitting Earth includes medium-large earthquakes, tsunami's, the starting of fires within a hundreds of kilometres of the impact site, and the ejection of so much dust and and ejecta that it could start a much longer and much more deadly nuclear winter globally. https://tutor.hix.ai
To understand how this can happen we must look at the energy released at the time of impact. We do this using this nifty formula: #E=1/2MV^2#, where #E# is the energy released upon impact in joules, #M# is the mass of the object in kilograms and #V# is the velocity of the object in metres per second. Now consider the facts that even the tiny meteorites have velocities of up to #40km//s#, and also that meteors only 17-20m across have masses of 11,000 tonnes, and you can already see how massive the nergy release would be for a meteor only #1km# wide. https://tutor.hix.ai
If a meteor was #1km# wide with a mass of just 1 million tonnes (which is relatively small), and a velocity of only #40km//s#, this would convert into the energy formula as #E= (10*9kg)*(40,000m//s)^2# #E=10*9*1,600,000,000# #E=1,600,000,000,000,000,000# joules #E=1,600,000,000,000# megajoules #E=1.6*10^11 megajoules. In comparison, the entire nuclear arsenal of the world is only equivalent to #60,000# megajoules. https://tutor.hix.ai

I hope I was of assistance.

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Answer 2

Larger meteorites can impact the Earth's surface, causing craters, releasing energy equivalent to explosions, and potentially causing damage to the environment and life forms. Extremely large impacts can trigger significant environmental changes, including mass extinctions and climate alterations. Small meteorites usually burn up in the atmosphere, creating bright streaks known as meteors or shooting stars.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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