Currents and Climate (1st 10) & Tides (Last 20)

Question Answer
Two types of Surface Currents. Warm Water Currents and Cold Water Currents.
What creates warmer climates in coastal areas that would otherwise be much cooler? Warm Water Currents.
What is a northern cold current that flows south bringing cooler waters and keeps climate along a coastal area cooler that it should be? Cold Water Currents.
What is the movement of deep cold and nutrient rich water to the surface? Upwelling.
What causes upwelling? When local current move away from the shore, the movement causes this event.
Why is upwelling important? They help tiny plants grow through photosyntheisis. It promotes the health of tiny plants and organisms which in turn affect fish and birds, et….
How often does El Nino occur? Every 2 to 12 years.
What is a change in the water temperature in the Pacific Ocean that produces a warm current causing unexpected weather events (droughts in areas that usually get rain and mudslides and flooding in areas that are usually in a drought)? El Nino.
What is a change in the eastern Pacific Ocean in which the surface water temp becomes unusually cool? La Nina.
Why is it important to study El Nino? Because of its effects on organisms and land.
What are the periodic rise and fall of the water level in the oceans and other large bodies of water? Tides.
Tides are influenced by two things? The Moon and the Sun.
Tides are most affected by the moon due it ____________pull to the Earth. Gravitational.
The moon's pull is strongest on the part of the Earth that is directly ____________________ the moon. Facing.
There are two daily tides: High and Low.
What are the bulges found on the side of the Earth directly facing the moon as well as the bulges on the direct opposite sides of the the EArth. High Tides.
What is it called when water is drawn away from the area between the high tides? Low Tides.
How much time lapses between two high tides? 24 hours 50 minutes. Once a day.
How much time lapses between a high tide and a low tide? 12 hours 25 minutes. Once a day, almost twice.
What is the difference between levels of the ocean water at high tide and low tide? Tidal Range.
If high tide occurs at 12 pm on Monday when is the next high and low tides? Low Tide – 12:25 am Tuesday
High Tide – 12:50 pm Tuesday
An area experiences high tide at 10 am on Tuesday. At about what time will there be another high and low tide? Low Tide – 10:25 pm Tuesday
High Tide = 10:50 am Wednesday
What is a tide of increased range that occurs twice a month at the new and full moons? Spring Tide.
What is a tide of minimum range that occurs during the first and third quarters of the moon? Neap Tide.
What are the tidal ranges of the Spring and Neap Tides? Spring tides have the largest daily tidal range. Neap tides have the smallest daily tidal range.
What are the two monthly tides called? Spring and Neap tides.
During which moon phases do spring tides occur? New and Full moon phases.
During which moon phases do neap tides occur? 1st and 3rd Qtr. Moons.
During a spring tide what is the positions of the Earth, Sun, and Moon? They are aligned.
During a neap tide what is the position of the Earth, Sun, and Moon? They form a 90 degree angle.

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