How Does the Angle of Impact Affect the Depth of Meteorite Craters?

In summary: Yes, the speed of the incoming meteor is quite considerable 20 to 40 km / Sec or so, considerably faster than the rotational speed of the earth.
  • #1
McHeathen
32
0
The angle of impact along with the mass and speed/acceletation have been claimed to be factors responsible for the depth of a crator. How importat a factor is the angle of impact? are the mass and speed/acceleration more important factors?

How much influence will the Earth's rotation have on the angle of impact?
 
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  • #2
The major factors in crater depth would be the speed and mass of the object. The impact angle would affect the shape of the crater and things like distribution of debris.

The Earth's rotation could not have any effect on the angle of impact. That is determined by the approaching object.
 
  • #3
Integral said:
The Earth's rotation could not have any effect on the angle of impact. That is determined by the approaching object.

If the Earth were not rotating and the meteor moved toward the center of the Earth, the angle of impact is 90 degrees to the surface (or, rather, to the tangent to the surface at that point). But if the Earth were rotating, wouldn't that be equivalent to the meteor landing with a velocity equal to the vector sum of the vertical speed and the Earth's tangential velocity? That wouldn't be directed at 90 degrees to the surface, would it?
 
  • #4
Fewmet is right. Because the Earth is fairly small and rotates fairly slowly, though, the relative velocity of a rock in space and Earth (roughly of order of the orbital velocity of earth) is much bigger than the rotation velocity of Earth on the equator (where it is biggest). So although in theory you should add the two, in practice you dont; have to.
 
  • #5
harcel said:
Fewmet is right. Because the Earth is fairly small and rotates fairly slowly, though, the relative velocity of a rock in space and Earth (roughly of order of the orbital velocity of earth) is much bigger than the rotation velocity of Earth on the equator (where it is biggest). So although in theory you should add the two, in practice you dont; have to.

Good point: I was thinking of the meteor's speed being from falling, and overlooked the obviously large orbital velocity of the Earth. Thanks for the clarification.
 
  • #6
Fewmet said:
Good point: I was thinking of the meteor's speed being from falling, and overlooked the obviously large orbital velocity of the Earth. Thanks for the clarification.

the speed of the incoming meteor is quite considerable 20 to 40 km / Sec or so, considerably faster than the rotational speed of the earth

Dave
 

What is the angle of impact of meteorites?

The angle of impact of meteorites refers to the angle at which a meteorite enters Earth's atmosphere and impacts the surface of the Earth. It is typically measured in degrees with respect to the horizon.

How is the angle of impact of meteorites determined?

The angle of impact of meteorites is determined through a combination of observations, measurements, and calculations. Scientists use instruments such as radar, seismometers, and cameras to track the trajectory of the meteorite as it enters the atmosphere. They also analyze the size and shape of the resulting impact crater to estimate the angle of impact.

Why is the angle of impact of meteorites important to study?

The angle of impact of meteorites provides valuable information about the nature and origin of the meteorite itself. It can also help scientists understand the potential effects of meteorite impacts on Earth's surface and atmosphere, as well as inform disaster preparedness and mitigation strategies.

What factors can affect the angle of impact of meteorites?

The angle of impact of meteorites can be influenced by several factors, including the speed and trajectory of the meteorite, the composition and density of the atmosphere, and the size and shape of the meteorite itself. Other factors such as Earth's magnetic field and air resistance can also play a role.

Can the angle of impact of meteorites be predicted?

While scientists can make estimates and predictions based on past observations and models, the angle of impact of meteorites is ultimately unpredictable. Factors such as the changing composition of Earth's atmosphere and the possibility of multiple meteorites entering at different angles make it difficult to accurately predict the angle of impact.

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