Tidal Heating of Moons

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Presentation transcript:

Tidal Heating of Moons /image_feature_758.html

Tides on Earth

Tides on Earth

Tides on Earth

Tides on Earth

Moons in the Solar System Earth’s Mars’ Jupiter’s Saturn’s Uranus’ Neptune’sPluto’s

Moons in the Solar System Earth’s Mars’ Jupiter’s Saturn’s Uranus’ Neptune’sPluto’s

Jupiter’s Moon Io

Jupiter’s Moon Io /image_feature_758.html science-at-nasa/2007/09mar_alienvolcano/

Jupiter’s Moon Europa

Europa’s Cracked Icy Surface EuropaEarth (Greenland)

Saturn’s Moon Enceladus

Enceladus’ Briny Geysers

Neptune’s Moon Triton

Tidal Heating Activity

Stretching elastic bands! Changing stretching = friction = heat Gravity stretches Moons = tidal force Changing tidal forces also cause heat Certain arrangements result in lots of stretching

The Rings of Saturn

The Rings of Saturn

The Rings of Saturn Enceladus & the E ring!

Summary Some moons are far from the Sun but are heated somehow Gravity stretches moons = tidal force Changing tidal forces provides heat by friction Heated moons can have volcanoes, geysers, and oceans! –Tidal heating means water can be a liquid even in places far from the Sun. Where there’s water, there might be life! Follow the water!