Ocean Tides

The diagram models four lunar phases.

During which lunar phase is the tide highest?

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112.20.b.7.C

Different relative positions of the sun, the moon, and Earth have different effects on Earth's oceans. Which model shows the positions of the sun, the moon, and Earth that have the greatest effect on ocean tides?

• 
• 
• 
• 

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During the moon phase shown in the image Earth will experience a -

• Spring Tide

• Neap Tide

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What type of tide would this arrangement of earth-moon-sun create?

• neap tide
• spring tide

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112.20.b.7.C

During the moon phase shown in the image Earth will experience a -

• Spring Tide

• Neap Tide

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112.20.b.7.C

What type of tide will occur at 9:30 a.m.?

• low 
• high 
• none
• high and low

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The diagram provided depicts tidal height related to four moon phases. Which points in the diagram could represent the height of tides during the full Moon and the new Moon?

• W and X

• W and Y

• X and Z

• X and Y

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112.20.b.7.C

What are the two main factors that create the tides on Earth?

• Gravitational forces and rotation of Earth on its axis.

• Phases of the Moon and distance from the Moon.

• Distance from the Sun and distance from the Moon.

• Gravitational forces and rotations of Moon on its axis.

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112.20.b.7.C

Look at the diagram provided. How many points on Earth, as indicated by the arrows, will be experiencing high tides?

• 1

• 2

• 3

• 4

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112.20.b.7.C

High tides are created on Earth when nearby celestial bodies create what change in the oceans?

• Electromagnetic waves reverse the direction of ocean currents.

• Water is warmed by the Sun and then rises to higher levels.

• Radiation striking the water increases salt content.

• Gravity pulls on the water creating bulges on two sides of Earth.

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