Located 8 to 12 degrees north of the Equator, Costa Rica enjoys a tropical climate year round with an average high of 27°C (81°F) and an average low of 18°C (64°F).
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Answer
Temperature and Salinity
Explanation:
The two key factors that determine the density of ocean water are the temperature of the water as well as the salinity of the water.
Theoretically the density of ocean water at the sea surface is usually about 1027 kg/m3. When the temperature is low then the density of ocean water increases until freezing of the water occurs.When there is also increase in Salinity if water the density of water also increases. However the temperature of an ocean have more impact on the density than the salinity of the ocean.
Density of ocean is usually calculated through the situ measurements of temperature, salinity by taking the sample of the ocean and taking it to laboratory
Answer:
The reason we on Earth have equinoxes at all is because the Earth's axis is tilted. ... Earth's axial tilt also means that our planet's equator is tilted relative to the plane of its orbit around the Sun – what astronomers call the “plane of the ecliptic”.
At the subduction zone of the Juan de Fuca and the North American tectonic plates, the Juan de Fuca plate is subductiong below the North American one, going downwards toward the mantle and being melted in it.
Once a very large tectonic plate, the Juan de Fuca plate is now only a small fraction of its peak size. It is actually not even in one piece, but it is broken down into three smaller plates, though very often all of them go under the same name. This plate is of oceanic type, making it lower and denser than the continental plates such as the North American. Because it is lower and denser, the Juan de Fuca plate is subducting below the North American plate, slowly disappearing from the face of the Earth, getting down into the mantle where it is melted and recycled.
This subduction zone is causing a lot of geological activity in the area, with the earthquakes and the volcanic activities being a regular occurrence. Also, this subduction zone is responsible for the formation of the mountain chains in the western apart of North America, such as the Rocky Mountains and the Cascade Mountains.
