Becuase the rock takes up space and has volume, it pushes the water out of the way.
to make space
If you put an ice cube in a glass of water the water level will rise because the cube displaces the water. Now if you check the water level after the cube melts, it will be the same. So ocean levels will not change if floating chunks of ice melt. However, If the ice is on land and melts and the water runs into the ocean, that will increase the water level.
The water in the lake WILL rise, but the lake is so much larger, the change will not be visible to the naked eye.
The Moon's gravitational pull on our planet causes the ebb and flow, (rise and fall), of our earth's oceans.
If the ice is floating (North Pole), then water levels do NOT rise when the ice melts. If the ice is on land (Alaska, Greenland, Antarctica) then the ice melting will cause sea levels to rise.
One way to measure volume of a material is the following: Put the material in a waterproof container, e.g. a tub. Submerge the material in water, register the water level, take the material out and measure what volume of water you need to add to the tub in order to make the water rise to the level it was with the material in. The volume of water you've added equals the volume of the material.
Normally it doesn't. Any change in water level is secondary to the earthquake that causes (most) tsunamis and/or the rise or fall of the land that accompanies it.
because the ice at north and south pole has melt
An under water earthquake precedes a tsunami. Earthquake causes seismic waves which set up the water in motion with a large force. This causes a tsunami.
It is called a flood.
The anchor displaces water and the water level will rise.
The fact that they are waterproof. Partly but they take space in the water and as a result water is displaced and rises.
when glacier runs into the ocean it causes the water level to rise. just like when we add ice cubes to a glass of water. but when the icebergs melts water level remains the same. like when the ice cubes melt in a glass of water. it does not increase the amount of water in the glass. global warming is causing glaciers to run into the ocean causing water level to rise.
The cool atmosphere condenses the rising water vapor and causes it to fall back to Earth
the melting of ice or glaciers
The rise and fall is the tides.
Floating ice is already in the water, so its melting causes no rise in lake levels.
The water will be displaced, and the water level will rise.