Because sometimes the stars seem to revolve around us,as a result of earths rotation.Also since the star orion is in the eastern hemispere in the summer you cannot see it because it is tilted towared the sun and if it's tilted to the sun you cant see it because it's bright.And the reason its to bright is because the sun is a big ball of gas and it's hard to see .In the the winter you can see it because it's tilted away from the sun
The earth's turns affect which stars we can see, not if they are visible at all. The stars are always there, But the light from our sun is brighter then the stars, and when the earth turns facing away from the sun, the stars are the brightest thing in the sky.
Tectonics.
The movements in the liquid inner core.
The movements in the liquid inner core.
Plate Techtonics.
earths tempertures
earths tempertures
Tectonic activities, (Earths internal movements).
earthquakes are movements on the earths surface
Aftershocks.
Because it tilts on its axis
A geologist studies the earth.