oceans and lakes would freeze solid and all life inthe water would die.
Vegetable oil? == == Any liquid that float over the water will make the ice sink if placed on it.Kerosene, gasoline, and some oils.
Most of earth's ice is piled up on Antarctica (the south pole). To a much lesser extent there is ice over the arctic and Greenland.
I think you may mean the Ice Age. At one point in one of the Ice Ages, the Earth was almost covered by ice/glaciers.
up your booty ////glaciers are a good example
ice ages
The earth would be like pluto a ball of Ice
The water would freeze, ice would SINK to the bottom. More water would freeze and ice would sink to the bottom again. Eventually the entire lake, river, stream, sea and ocean would be solid ice. All (or virtually all) life would cease in the waters.
on Earth
It would not be good. I don't think that life on earth could be sustained. Ice floats on top of water b/c it is less dense. This prevents the water underneath the ice from freezing. If ice sank, then nothing would stop all water from freezing. Even if these freezing cycles were reversed as earth's temperatures change, it would not bode well for life on earth. (Consider earth's many ice ages)The ice would sink and the water level will rise.Additional answerThe ice would, indeed, sink. But this would cause the water level to go down. Think about it. The bit of water that has become ice would be smaller than it was before so the level would go down.
If ice were not less dense than water, ice would form from the bottom up in bodies of water, freezing the aquatic life, and possibly killing off most of the aquatic life every winter.
The northern hemisphere
As things cool, they generally shrink and get more dense. If water continued to shrink and get more dense as it cooled from 4 degrees C, then ice would sink instead of floating, and the ice would eventually freeze the oceans solid. But water begins to EXPAND as it cools from 4 degrees C, and ice forms a crystalline structure that expands as it freezes - so ice floats. That means that when warmer weather happens, the ice can melt.
Eventually it would be come a ball of frozen ice.
Ice cream doesn't have bones.
The ice sheet that covers 98% of Antarctica acts as a heat sink, which can help regulate our climate.
The Ice Would Be Crushed
I only know one thing. When the earth warms up all the ice on the south and north pole melts and the water level increases in the sea. Small islands will then sink.