What sunspots are
dark blotches seen on the Sun's surface are called sunspots. They are
thousands of kilometres across and usually occur in pairs. The reason
they are dark is because the blotches are slightly less hot than the
rest of the Sun's surface.As the Sun rotates, the blotches slowly cross
its face - in about 17 days at the equator and 26 days at the Poles.
The average number of spots seems to reach a maximum every 11 years.
Many scientists are of the view that these sunspots maximums are linked
to periods of stormier weather on Earth.
What the periodic table is
The chart where all the elements are ordered according to their
properties is the periodic table. Columns are called ‘groups’, rows are
called ‘periods.’ Elements in the same group have the same number of
electrons in the outer shell of their atoms and similar properties.
the Neanderthals were
The Neanderthals are a type of human who lived in Europe and Asia
from about 200,000 to 35,000 years ago. They were a short, stocky people
with ridged brows. They died and were replaced by modern humans who are
believed to have originated in Africa. No one knows why the neanderthals
totem poles tell
Native American people who lived in the forests of northwest in North
America carved totem poles which were very high. The poles depicted
They were carved to record their family history and to re-tell
ancient legends about the powerful spirits that lived in all the rocks,
mountains, wild animals and tress.