It takes each planet the
same amount of time to orbit around the sun.
The distance from the sun
impacts the amount of time it takes for the plant to revolve around the sun. Mercury
which is the closest planet to the sun is 36 million miles away from the sun. It takes only 88 Earth days for Mercury to make
its voyage around the sun. Pluto (although no longer considered a planet) has
a much longer path to follow. Pluto is 3688 million miles away from the
Sun and requires 248 Earth years to complete its period of revolution around the sun.
Students may not realize
how much distance impacts a planets revolution time around the sun.
The further a planet is
from the sun, the longer it takes for it to orbit the sun.
Provide each student with
a yardstick, ruler and modeling clay. Place a walnut sized ball of clay on one
end of the ruler and on one end of the yard stick. Hold the yardstick and ruler vertically side by side with the edge without
the clay ball on the ground. Release both at the same time. Observe. The shorted ruler will hit the surface first. This
will demonstrate that they shorter the distance a planet has to travel, the shorter the voyage time around the sun will be.