Select the correct answer from the list.(1 point)
Over the past 100 years, Earth’s temperature has increased about
. Solar heating due to space weather is responsible for about
of this increase.
2.4 1.1
25% 50%
25%
Select the correct answer from the list.(2 points)
During the low point in the sun's 11-year cycle, the
field lines up with the poles, resulting in
sunspots. At the peak of the solar cycle,
sunspots tend to form. During that phase of the solar cycle, intense bursts of radiation cause
. This often occurs with coronal mass ejections, which are
from the sun.
magnetic, fewer, more, geomagnetic storms, explosions
The sun's energy is generated in its(1 point)
Responses
core.
core.
corona.
corona.
radiative zone.
radiative zone.
convection zone.
convection zone.
core.
Which are predicted to happen in the case of a severe geomagnetic storm? Select the two correct answers. (1 point)
Responses
extra currents in the ground will disrupt power grid operations
extra currents in the ground will disrupt power grid operations
signals from radio navigation systems will be disrupted and be inaccurate
signals from radio navigation systems will be disrupted and be inaccurate
satellites will be forced to Earth's surface
satellites will be forced to Earth's surface
high-frequency radio waves used for radio communications will intensify
high-frequency radio waves used for radio communications will intensify
extra currents in the ground will disrupt power grid operations
signals from radio navigation systems will be disrupted and be inaccurate