EVERYDAY SCIENCE

Detailed explanation-1: -This water movement is driven by convection: The movement of water due to differences in temperature. Because the warm water is lighter than the cold water and wants to expand, it moves into the upper cup through the hole.

Detailed explanation-2: -These deep-ocean currents are driven by differences in the water’s density, which is controlled by temperature (thermo) and salinity (haline). This process is known as thermohaline circulation.

Detailed explanation-3: -Convection currents are heat-driven cycles that occur in the air, ocean, and mantle. They are caused by a difference in temperature, often due to a differing proximity to a heat source. The difference in temperature relates directly to the density of the material, causing this effect.

Detailed explanation-4: -Examples of convection can be seen in the Earth’s atmosphere and in the ocean currents.

Detailed explanation-5: -Wind causes waves to travel in the ocean and the energy is released on shorelines. The motion of the surface water seldom affects the stagnant deep bottom water of the oceans. As a wave approaches the beach, it slows down. This is due to the friction occurring between the dynamic water and the sea floor.