Chapter 14A

What is the definition of Currents?

• The alternating rise and fall of local sea level.

• A continuous, directed movement of seawater generated by a number of forces acting upon the water.

• Transfer energy over great distances and help shape shorelines through erosion.

What is the definition of Tides?

• A) A continuous, directed movement of seawater generated by a number of forces acting upon the water.

• B) Transfer energy over great distances and help shape shorelines through erosion.

• C) The alternating rise and fall of local sea level.

Waves ______ energy over great distances and help shape shorelines through erosion.

• transfer

• absorb

• reflect

• dissipate

What usually has the greatest influence on tides?

• The sun

• The moon

• The wind

• Ocean currents

What is the main force causing tides?

• The main force causing tides is the gravitational pull of the moon and the sun.

• The main force causing tides is the wind blowing across the ocean surface.

• The main force causing tides is the rotation of the Earth.

• The main force causing tides is the ocean currents.

High tides occur on the side facing the moon and the opposite side due to the combined effect of gravity and ____.

• inertia

• magnetic force

• electromagnetic force

• nuclear force

What do the areas between the bulges experience?

• Low tide

• High tide

• No change

• Extreme weather

As the Earth rotates, different parts experience high and low tides.

• True

• False

How many high tides and low tides occur along most coasts each day?

• One high tide and one low tide

• Two high tides and two low tides

• Three high tides and three low tides

• Four high tides and four low tides

A spring tide is:

• higher than usual tides caused by the sun, moon, and earth arranged in a straight line

• a tide that occurs at the first and third quarters of the moon.

• a tide that occurs when the sun and moon are at right angles to each other.

• a tide that occurs during a solar eclipse.