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Cosmic ray intensity at Earth's surface would be greater when Earth's magnetic field passed through a zero phase because magnetic shifting is minimal. Fossil evidence suggests that the periods of no protective magnetic field may have been as important in changing life forms as x-rays have been in the famous heredity studies of fruit flies.
What else can I help you with?
What happens to the magnetic orientation of rocks as the poles reverse?
During a magnetic pole reversal, the magnetic orientation of rocks changes to align with the new orientation of the Earth's magnetic field. This means that the magnetization of rocks will also reverse during a geomagnetic field reversal event.
What occures during freezing and melting?
a change of state
How is earths magnetic field used by people and animals?
People use Earth's magnetic field for navigation, such as in compasses to find direction. Animals, like birds and fish, can sense Earth's magnetic field to navigate during migration or find their way in the ocean.
Why nausia occur during pregnancy?
Nausia occures during pregnancy because of the movement of the child in the body.
How have Earths magnetic poles reversed many times during Earths history?
Earth's magnetic poles have reversed many times in the past due to changes in the Earth's molten outer core. As the molten metal moves, it generates the Earth's magnetic field. Over time, this movement can cause the magnetic field to weaken, flip, and establish a new polarity. The process of pole reversals is a natural part of the Earth's geophysical history.
Regions of the sea floor with negative magnetic anomalies were formed during times when Earth's magnetic field was or had?
Regions of the seafloor with negative magnetic anomalies were formed when Earth's magnetic field was reversed or had opposite polarity compared to its current orientation. This means that the magnetic minerals in the rocks aligned in the opposite direction during their formation, leading to negative anomalies when measured against the current field orientation.
What happenes to the magnetic orientation of rock as the poles reverse?
There is nothing -_-
Do bats use the earths magnetic fields?
Yes, some research suggests that bats may use the Earth's magnetic fields for navigation during their nightly flights. However, the exact mechanisms and extent of this ability are still being studied and are not fully understood.
What function is formed by earths magnetic field?
Earth's magnetic field functions as a shield that protects the planet from harmful solar winds and cosmic radiation. It also helps birds and other animals navigate during migration through the Earth's magnetic cues. Additionally, it plays a role in the formation of the auroras in the polar regions.
When DNA cynthesis occures?
Within the Cell cycle, Dna synthesis occurs during the S [synthesis] phase.
Do Rocks formed during metamorphism depend on Earths Magnetic Field?
No, the rocks formed during metamorphism do not depend on Earth's magnetic field. Metamorphism is the process where existing rocks are altered by high pressure and temperature without being melted. The formation of metamorphic rocks is primarily influenced by the chemical composition of the original rock and the conditions present during metamorphism, such as pressure and temperature.
Is Earths magnetic field widening?
I am not sure what you mean by widening. The Earth's magnetic field is a result of the fact that the Earth has a molten Iron core and the planet is rotating quite rapidly. The strength of the magnetic field in these circumstances is dependent on the speed of rotation. As the Earths rotational speed is slowing (due to the friction of the tides caused by the moon) the Earth's magnetic field is gradually weakening over geological time scales but this is not significant in terms of human time. The other affect of the rotating Iron core on the magnetic field is what is called field inversions. In the same was as the Sun goes through an 11 cycle of activity during which the N and S magnetic poles flip, the Earth's poles also flip about once every 75-100 thousand years. There is some evidence that the Earth's poles are in the process of flipping at the moment and during this process, in the same was that the Sun develops Sun spots, multiple poles appear at various locations round the Earth. This effect could be said to distort (or widen) the Earths magnetic field.
