Earth rotates on its axis.
The Earth orbiting the Sun is responsible for the regular seasonal changes of the constellations visible in the night sky.
The Earth orbiting the Sun is responsible for the regular seasonal changes of the constellations visible in the night sky.
gradual motion of the constellations from east to west across the sky each night, resulting in different constellations being visible at 4 A.M. than at 10 P.M. on any given night.
The rotation of the earth around its axis.
Earth in its orbit.
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Compared to the background of constellations, planets mostly move eastward. Retrograde motion refers to the brief periods of westward movement.
During diffusion, the random motion of atoms causes them to spread out gradually.
Let's disregard the five visible planets right now; there isn't any simple pattern as to what seasons they are visible. For the "fixed" stars, we do not see them move. They DO move, but they are so far away that you wouldn't notice the difference in a human lifetime. As the Earth orbits the Sun, different constellations are visible from a particular location, during the year. That's because the Sun appears to move slowly around the sky during the year as we orbit the Sun. Of course, the Sun then blocks our view of the constellations near it in the sky. In fact, "circumpolar constellations" can be seen all year because they never go below the horizon. So they can be seen when the Sun isn't in the sky. An important consequence of our orbiting around the Sun is that any given star rises about four minutes earlier every night. That's because our 24 hour "solar day" is about 4 minutes longer than the Earth's rotation period. So, the stars appear to move slowly westwards in the sky during the year. Obviously, this apparent motion of the stars, relative to the Sun, is related to the seasons. The patterns of stars visible in the sky in winter are always the same. There are different patterns of stars visible in the spring, summer, or fall.
Applied force to an object causes motion.
The glass tube is filled with mercury gas. Electricity causes the gas molecules to vibrate faster. The increased motion excites phosphorous in the tube and causes it to give off visible light.
a pulling motion causes a normal fault