Currents
Labs
Tides
Vocabulary
Gyres
100
What causes surface currents?
Wind
100

Where in the world has the strongest winds? Explain how the model of the Earth demonstrated this. 

Antarctica and the model demonstrated it by the bright/neon green lines.
100

What is a tide?

(+/-)

Periodic rise and fall of a body of water due to gravitational interactions between the sun, moon, and Earth

100

The constant motion of the ocean that is responsible for distributing heat throughout the world is known as what?

Ocean Conveyor Belt

100
What is an ocean gyre?
A large circular pattern of ocean movement caused by the meeting up of several currents
200

What causes deep ocean circulation?

(+/-)

Differences in water mass density (thermohaline circulation)

200

Does wind move from high to low pressure or low to high pressure? Explain how the Earth model demonstrated this.

High --> low. It demonstrated it by the pressure overlay. White = high and purple = low. Wind was moving from white areas to purple.

200

How long does it take for one single tidal cycle? Explain why.

24 hours and 50 minutes because by the time the Earth has completed one full rotation, the moon has moved and Earth takes 50 minutes to catch up.

200

A pressure difference where hot air rises and cold air sinks

Hadley cell

200
How many major world gyres are there?
5
300

When you are playing in the ocean you must watch out for __________, a spot where the longshore current carries water back into the ocean.

rip current

300

According to the data, during which moon phase does the greatest spring tide occur? Explain why.

(+/-)

New moon because the Earth and Sun are exerting both of it's gravitational forces in the same direction.

300
True or false: higher tides occur when the Earth's orbit is closer to the sun. 

False

300

Regular movements of large amounts of water along defined paths are called __________

Currents

300
What direction do gyres move in the northern hemisphere?
Right / Clockwise
400

Explain the Coriolis effect and its impact on global wind patterns.

The Coriolis effect is the phenomenon where objects travelling in a straight line will appear to be deflecting due to the rotation of the mass underneath. Wind patterns follow this trend and move in a clockwise or counter clockwise direction depending on the hemisphere.

400

According to the data, which two moon phases showed to have high tides that are lower than normal and low tides that are higher than usual and explain why.

First and last quarter. The Moon and Sun have conflicting gravitational forces on the Earth. 

400
A _______ _______ is when the ocean is pulled into huge waves with a wavelength the size of the entire ocean basin.
Tidal Bulge
400

What are mixed semidiurnal tides?

(+/-)

2 high tides and 2 low tides occurring in a a day with varying heights.

400
Name the major world gyres.
North Atlantic, South Atlantic, North Pacific, South Pacific, and Indian
500
How does ocean circulation effect world climate?
Ocean circulation is responsible for moving heat throughout the world and therefore determines climate.
500
This location has what kind of tides? Explain. 

Semidurnal because there are 2 high and 2 low tides a day.

500

Spring tides and neap tides occur in patterns governed by what?

Moon phases

500

What causes upwelling and why is it beneficial?

It occurs when water is pushed away from an area forcing surface rise and takes its place. Upwelling is a key component to distributing nutrients to the oceans layers.

500

What are the two currents that bound gyres?

Equatorial currents and boundary currents

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