Question

At the coast on a summer day, the land is hotter than the ocean. Warm air over the land rises and is replaced by cooler air, causing a sea breeze. At night, the land cools quickly and the ocean is now warmer than the land. What will happen next? Winds will stop blowing as the convection current ceases to flow. The convection current will reverse direction, reversing the winds. Winds will increase as the two convection currents overlap. The convection current will move seaward, reversing the winds.

Answer 1

Sea breezes occur during hot, summer days because of the unequal heating rates of land and water. During the day, the land surface heats up faster than the water surface. Therefore, the air above the land is warmer than the air above the ocean. Now, recall that warmer air is lighter than cooler air. As a result, warm air rises. Therefore, the warmer air over the land surface is rising. As the warm air over the land is rising, the cooler air over the ocean is flowing over the land surface to replace the rising warm air. This is the sea breeze and can be seen at the top of the following image. The bottom of the following image illustrates the land breeze that occurs at night. Recall that the land surface cools quicker than the water surface at night. Therefore, the warmer air over the ocean is buoyant and is rising. The denser cool air over the land is flowing offshore to replenish the buoyant warm air and is called a land breeze.

Answer 2

Answer:

B. The winds will change direction as a result of the thermal conduction.

Convection is an autonomous single- or multiphase fluid movement that arises from the combination of the fluid's concentrated loads, most typically gravitation and density, with the diversity of its mechanical properties. Convective heat carry thermal energy from the burner to the pot, which subsequently transfers it to the water.

Explanation:

• Convection is an autonomous moving of a single- or multistage fluid due to the interactions of the fluid's contact pressure, most commonly gravity or density and mechanical properties variability.
• Mantle convection carry heat energy from the burner to the pot, which subsequently transfers it to the liquid. When sunshine hits the land, it warms up. As a result, the air nearest to the planet warms as well, lightening and ascending. Colder, denser air from higher elevations lowers down to fill the space left by warm air. As this cycle is repeated, eddy currents are produced.
• The hot air flowing to the roof of your house is a perfect illustration of a thermal conduction. Since hotter air is believed to be less dense than colder air, the process occurs. Another wonderful example of thunderstorm movement is wind.
• Convection is a heat-transfer mechanism that facilitates the activation of a heated fluid, like air or water. Many liquids tend to grow when heated, which makes them less dense and allows them to rise due to the increased buoyancy, which is what allows fluid movement.

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