Tides and Their Causes

What are tides?

• The cyclic rise and fall of sea levels

• The constant rise of sea levels

• The unpredictable movement of sea waves

• The seasonal change in sea currents

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NGSS.MS-ESS1-1

NGSS.MS-ESS2-4

What causes tides?

• The gravitational pull of the sun and the moon, and the rotation of the Earth

• The magnetic field of the Earth

• The wind patterns over the ocean

• The temperature differences in the ocean

Tags

NGSS.MS-ESS1-1

NGSS.MS-ESS1-2

What is the term used to describe when water levels are at their highest?

• Low tide

• High tide

• Full moon

• New moon

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NGSS.MS-ESS2-4

What do we call the state when water levels are at their lowest?

• High tide

• Low tide

• Waxing tide

• Waning tide

What is the tidal range?

• The time between two high tides

• The difference in height between high tide and low tide

• The temperature difference between high tide and low tide

• The distance between the shore and the highest point of the tide

Where is the pull of the moon's gravity strongest on Earth in relation to tides?

• At the poles

• At the equator

• At locations closest to the moon

• At locations farthest from the moon

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What is inertia?

• The force that pulls objects towards the center of the Earth

• The tendency of moving objects to continue moving in a curved path

• The tendency of moving objects to continue moving in a straight line

• The force that keeps the Earth in orbit around the sun

As Earth rotates, what happens to the water due to the tidal force?

• It freezes at the poles

• It evaporates from the surface

• It bulges out at the side closest to the moon and the opposite side farthest away

• It remains perfectly still

What causes the water on Earth to bulge out nearest to and farthest away from the moon?

• The rotation of the Earth on its axis

• The gravitational pull of the moon

• The gravitational pull of the sun

• The Earth's magnetic field

Tags

NGSS.MS-ESS1-2

What do the flat sides of the tidal bulges indicate?

• High tides

• Low tides

• Tsunamis

• Earthquakes