Tides

Tides

Mr.Mendoza

What forces and heavenly bodies cause the tides?

Tides

Tides are caused by the gravitational attraction among Earth, the Moon, and the Sun.

Tides are the periodic rise and fall of sea level.

High tide highest level to which the water rises

Low tide lowest level to which the water drops

Multiple Choice

Tides are caused by the difference in the gravitational force of the ________ and ________ across the ________.

• earth, sun, moon

• sun, mars, jupiter

• sun, moon, earth

• tide, water, sun

Multiple Choice

_______are daily changes in ocean water.

• Waters

• Tides

• Colors

• Earths

What forces & heavenly bodies cause the tides?

The gravitational pull of Moon on oceans facing it causes high tide.

The sides of Earth NOT directly facing toward or away from the Moon experience low tide.

The Cause of Tides

What motion causes tides at location to change every 6 hours?

Earth’s rotation on it’s axis

The times of tides vary each day because the moon orbits the Earth every 28 days

Spring Tide

Twice a month, the Earth, Moon, & Sun align (line up) causes the Moon & Sun to pull together on Earth’s oceans. Higher high tides / lower low tides

Multiple Choice

A[n] ___________ tide occurs when the sun, Earth, and the moon are nearly in a line.

• spring

• high

• low

• neap

Neap Tide

Twice a month, the Earth, Moon, & Sun will form a right angle which causes the Moon & Sun to pull from different directions on Earth’s oceans. Evens the tides

Multiple Choice

A[n] ______________ tide occurs when the sun is at right angles to the line between Earth and the moon.

• high

• neap

• low

• spring

https://www.youtube.com/watch?v=M3hAhNsyf7k