Tides
Tides are the changes of the sea level rising and falling. These occurrences are most commonly formed due to the gravitational pull of the Moon and happen in a cycle of approximately every 24 hours.
As the Earth rotates on its axis, the oceans form a bulge near the Equator. The oceans are flung to the outside of the earth as it rotates. The Earth’s gravity constantly pulls back the oceans stopping them from completely getting knocked off the face of the Earth.
High tides and low tides:
The Earth forms a type of tides called ‘high tides’ during its rotation. High tides form where the Earth is pulled by the gravitational pull of the Moon and are located on the two sides of the Earth including directly below the Moon (sublunar) and the opposite side of the Earth (antipodal).
Another type of tide that is formed during the Earth’s rotation is low tides. Low tides are formed when the areas that have a strong gravitational pull from the Moon (high tides) are further away from the Moon, therefore dropping these points of the Earth’s sea water level. 90 degrees away from the Moon is where the sides of the Earth experience low tides.
Other types of tides:
Spring tides: Spring tides are where higher tides than normal are experienced. Spring tides are formed when the sun is either on the opposite or same sides of the Earth as the moon.
Neap tides: Neap tides are the name given to a tide when the tidal range is at its smallest.
Semidiurnal tides: Tides that occur twice a day.
Diurnal tides: Tides that only occur once a day.
As the Earth rotates on its axis, the oceans form a bulge near the Equator. The oceans are flung to the outside of the earth as it rotates. The Earth’s gravity constantly pulls back the oceans stopping them from completely getting knocked off the face of the Earth.
High tides and low tides:
The Earth forms a type of tides called ‘high tides’ during its rotation. High tides form where the Earth is pulled by the gravitational pull of the Moon and are located on the two sides of the Earth including directly below the Moon (sublunar) and the opposite side of the Earth (antipodal).
Another type of tide that is formed during the Earth’s rotation is low tides. Low tides are formed when the areas that have a strong gravitational pull from the Moon (high tides) are further away from the Moon, therefore dropping these points of the Earth’s sea water level. 90 degrees away from the Moon is where the sides of the Earth experience low tides.
Other types of tides:
Spring tides: Spring tides are where higher tides than normal are experienced. Spring tides are formed when the sun is either on the opposite or same sides of the Earth as the moon.
Neap tides: Neap tides are the name given to a tide when the tidal range is at its smallest.
Semidiurnal tides: Tides that occur twice a day.
Diurnal tides: Tides that only occur once a day.
Gravity
Have you ever seen a fruit or object falling from a tree? Without the force of gravity it would just float away into space. We have gravity on our planet because of the gravitational pull from between the Moon and the Earth. The Moon is pulled by the Earth because of the Earth's large mass.