共用题干Solar StormAt the end of October 2003

共用题干

Solar Storm

At the end of October 2003,a sudden solar storm hit the earth.A solar storm refers to
the large amounts of charged particles released into space_________(1)the solar energy
increases.The release of the energy_________(2)place along with the activity of the
sunspots with a cycle of 11 years.This time,the_________(3)of the storm exceeded
expectations.
This_________(4)of intense solar storm was caused by the eruption of a solar flare
（闪光）and the ejection（喷发）of the solar corona（日冠）on October28, 2003. Large
amounts of charged particles moved 150, 000,000 kilometers through space toward the
_________(5)in 19 hours. They could affect aircraft roaming（漫游）in space.
The high-energy particles will_________(6)some of the parts of an aircraft.They
may also cause it to fail.High-energy particles can threaten the safety of an aircraft at a
high orbit.If an aircraft orbits at a lower orbit,it is_________(7)because it is under the
protection of the earth’s magnetic field.
A solar storm not only affects aircraft but also is a_________(8)to the environment
and humans.The aerosphere and magnetic field of the earth can_________(9)humans
from ultraviolet radiation and X-rays. While most of the X-rays are absorbed after they enter
the aerosphere（大气层）,still a few can_________(10) the ground.
The geomagnetic storm caused by this round of solar storm reaches its highest level on
the two_________(11)of the earth,which affects electricity supply of North America.
Overexposure to_________(12)threatens the health of passengers on planes flying over
the Polar Regions.If we fly in the sky during such a solar storm,it_________(13)we
receive ten times the X-ray radiation.It’s really damaging.
Scientists say a solar eruption is like the sun sneezing,which will make the earth
_________(14)a cold.Though this natural force is irresistible,scientists can still
_________(15)its movement accurately by monitoring.Facing successive solar storms,
humans can’t drop their guard.

_________(3) A:intensity B:height C:width D:density