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Why are astronomers interested in mass extinctions on Earth?
LooneyTunerIan
Astronomers know that just as large objects from space have cause catastrphes on Earth in the past they are likely to do so again in the future. By finding such objects and calculating their paths they learn which ones have paths that intersect Earth's orbit. By calculating when and where that will happen they discover which ones are a threat to Earth. With such advance warning they can send a spacecraft to the object to change its path so it is no longer a threat. For example, astronomers know that a large object will pass close to Earth on Friday the 13th of April 2029. It will miss Earth, but it will be so close that it will be closer than our communication satelites.
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∙ 7y ago
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What fraction of Mar's mass is equal to Earth's mass?
Mars would have to find more mass if it wanted to equal the Earth's. It has only 11% of Earth's mass.
Triple earth's mass effect its orbit?
The earth's mass has no effect on its orbit. An astronaut on a "space walk" hovering over the space shuttle's cargo bay is in the same earth-orbit as the shuttle itself is, although his mass is much less than the shuttle's mass. At the same time, the shuttle and the astronaut are both in the same solar orbit as the earth is, although each of them has quite a bit less mass than the earth has.
How can the sun have a large gravitational force on the earth but a small force on you?
Earth has more mass.
How big is Alpha Centauri Bb?
The minimum mass is estimated at about 1.13 times Earth's mass. The maximum possible mass is not known.
What percentage of area do deserts cover of the total land mass?
Deserts cover about 33% of the total land mass of the earth.
What has changed most of the mass extinctions on earth?
climate change
The fossil record indicates that Earth has experienced?
5 mass extinctions
Climate changes have been linked to almost all mass extinctions of life on Earth?
true
What was the outcomes of each of the mass extinctions?
The outcomes of each of the mass extinctions is that animal and/or bacteria die.
When geologists refer to the big five' what are the referring to?
When geologist refer to the Big Five they are referring to the five mass extinctions on Earth. Some of these extinctions are the Paleozoic and Mesozoic eras.
When geologists refer to the Big Five what are they referring to?
When geologist refer to the Big Five they are referring to the five mass extinctions on Earth. Some of these extinctions are the Paleozoic and Mesozoic eras.
When geologist refer to the big five what are they referring to?
When geologist refer to the Big Five they are referring to the five mass extinctions on Earth. Some of these extinctions are the Paleozoic and Mesozoic eras.
Is it true Climate changes have been linked to almost all mass extinctions of life on Earth?
true
Mass extinctions are usually followed by what?
When there are mass extinctions they are usually followed by adaptive radiation and very rapid diversification. The last mass extinctions happened 65 million years ago.
Large craters found on earth support the hypothesis that impact events have caused?
mass extinctions of animals and plants
Do scientists believe that extinctions are uncommon?
No, they are fundamental to the process of evolution. Mass extinctions are less common.
Is Earth is in danger of another mass extinction?
Mass extinctions occur when the conditions on Earth change faster than species can adapt. Since humans have greatly changed the conditions on Earth and continue to change them at rapid rates, a mass extinction is a likely possibility if nothing is done to reverse or stop the changes (mainly the amount of carbon dioxide being released to the atmosphere). Another common cause of mass extinctions are extraterrestrial which cannot be predicted and are somewhat spontaneous.
