KOMPAS.com – The sun and the moon, each have gravity binding them to the earth. What are the consequences sun’s gravity and the moon to the earth? Due to the sun’s gravity and moon gravity against the earth is ebb and flow sea water.
JL Sumich in a book called An Introduction to the Biology of Marine Life (1996), mentions that Sir Isaac Newton explained that the gravitational attraction of the sun and moon causes the tides of sea water on the earth.
Gravity It can attract any object in its magnetic field. The moon has a smaller mass than the earth.
However, it has a very close distance. Thus, the moon’s gravity exerts an influence on the earth.
Also read: Kepler’s Laws of Motion in the Solar System
Meanwhile, the sun has a very far distance from the earth. However, the sun is much bigger than the earth (big gravity in direct proportion to the mass).
Thus, the gravitational force of the sun is so great that it keeps the earth in its orbit.
Reported from Spacethe gravity of the sun and moon pulls the earth’s surface and causes the rise and fall of sea level or better known as tides.
The moon’s gravitational force pulls the Earth’s surface opposite it. In that area, the water will be attracted to one and form a bulge.
At the Earth’s surface, these bulges are seen as rising sea levels and are referred to as tides.
Tides do not only occur on the surface of the earth that is facing the moon, but also on the back of the surface.
Also read: Seawater Tidal Energy Sources
Reported from NOAA SciJinksthis happens because tides are differential forces born from differences in gravity above the earth’s surface.
Moon gravity which pulls water in one area, causing the area behind it to be at its weakest point of gravity. Thus, in this area a bulge of sea water is formed which causes tides.
Meanwhile, at the two poles of the earth there is compression which causes a decrease in sea level or known as receding.
This explains why the earth experiences two highs and lows.
The ups and downs don’t just happen in one place, so do the ebbs. This is because the earth rotates and rotates, causing the tides to occur alternately on the earth’s surface.
Also read: The Moon’s Rotation and Revolution With respect to the Earth
The sun has a gravitational force that is much greater than the moon, but is very far from the earth.
Reported from National Oceanic and Atmospheric Administrationthe great distance makes the tidal force of the sun about 27 times less than the tidal force of the moon.
However, the gravitational force of the sun and the moon both have an influence on the tides of the earth. The sun’s gravity causes smaller tides than the moon’s gravity.
Install spring
At a new moon or full moon, the positions of the sun, earth, and moon are in a straight line or parallel.
Also read: Difference Between Penumbral Lunar Eclipse, Partial Lunar Eclipse, and Total Lunar Eclipse
This makes the moon’s gravitational force and the sun’s gravitational force mutually reinforcing. Creates a greater tug on the earth’s surface. Thus, there is a larger tide which is known as the spring tide.
Put a bandage
However, the moon is not always between the sun and the earth. When the moon is half full, the moon and sun are perpendicular to each other.
Thus, the gravitational force does not reinforce each other. So, there will be tides of the moon at both poles and tides of the sun at the equator.
Ebb and flow this is much smaller than the spring tide and is referred to as the perbani tide.
The tides that occur when the sun and moon are perpendicular-Get updates news of choice and breaking news every day from Kompas.com. Let’s join the Telegram group “Kompas.com News Update”, how to click the link https://t.me/kompascomupdate, then join. You must first install the Telegram application on your cellphone.– 
