Evidence for Plate Tectonics & Magnetic Reversals.

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Presentation transcript:

Evidence for Plate Tectonics & Magnetic Reversals

Fossils of Mesosaurus are found on _______________________ and on Africa. Coastline _______ is what started the thinking on plate tectonics. The Appalachian Mts. Match mountains found in _________ when the plates are put back together. The ____________________ is diverging at a rate of 2.5 to 3cm per year. _________________ is credited for discovering Plate Tectonics.

Fossils of Mesosaurus are found on South America and on Africa. Coastline _______ is what started the thinking on plate tectonics. The Appalachian Mts. Match mountains found in _________ when the plates are put back together. The ____________________ is diverging at a rate of 2.5 to 3cm per year. _________________ is credited for discovering Plate Tectonics.

Fossils of Mesosaurus are found on South America and on Africa. Coastline Shape is what started the thinking on plate tectonics. The Appalachian Mts. Match mountains found in _________ when the plates are put back together. The ____________________ is diverging at a rate of 2.5 to 3cm per year. _________________ is credited for discovering Plate Tectonics.

Fossils of Mesosaurus are found on South America and on Africa. Coastline Shape is what started the thinking on plate tectonics. The Appalachian Mts. Match mountains found in Europe when the plates are put back together. The ____________________ is diverging at a rate of 2.5 to 3cm per year. _________________ is credited for discovering Plate Tectonics.

Fossils of Mesosaurus are found on South America and on Africa. Coastline Shape is what started the thinking on plate tectonics. The Appalachian Mts. Match mountains found in Europe when the plates are put back together. The Mid-Atlantic Ridge is diverging at a rate of 2.5 to 3cm per year. _________________ is credited for discovering Plate Tectonics.

Fossils of Mesosaurus are found on South America and on Africa. Coastline Shape is what started the thinking on plate tectonics. The Appalachian Mts. Match mountains found in Europe when the plates are put back together. The Mid-Atlantic Ridge is diverging at a rate of 2.5 to 3cm per year. Alfred Wegner is credited for discovering Plate Tectonics.

Magnetic Reversals Newly formed _____________ at spreading centers has the current polarity of Earth’s present _____________. As you go away from the _______________, the polarity of the crust changes, or alternates _____________. A rock’s ________ is defined when the rock cools (or when it is formed). This is evidence the Earth’s magnetic field has ________ many times in the past. Definite reasons for this are _________.

Magnetic Reversals Newly formed oceanic crust at spreading centers has the current polarity of Earth’s present _____________. As you go away from the _______________, the polarity of the crust changes, or alternates _____________. A rock’s ________ is defined when the rock cools (or when it is formed). This is evidence the Earth’s magnetic field has ________ many times in the past. Definite reasons for this are _________.

Magnetic Reversals Newly formed oceanic crust at spreading centers has the current polarity of Earth’s present magnetic field. As you go away from the _______________, the polarity of the crust changes, or alternates _____________. A rock’s ________ is defined when the rock cools (or when it is formed). This is evidence the Earth’s magnetic field has ________ many times in the past. Definite reasons for this are _________.

Magnetic Reversals Newly formed oceanic crust at spreading centers has the current polarity of Earth’s present magnetic field. As you go away from the spreading center, the polarity of the crust changes, or alternates ______________. A rock’s ________ is defined when the rock cools (or when it is formed). This is evidence the Earth’s magnetic field has ________ many times in the past. Definite reasons for this are _________.

Magnetic Reversals Newly formed oceanic crust at spreading centers has the current polarity of Earth’s present magnetic field. As you go away from the spreading center, the polarity of the crust changes, or alternates back and forth. A rock’s ________ is defined when the rock cools (or when it is formed). This is evidence the Earth’s magnetic field has ________ many times in the past. Definite reasons for this are _________.

Magnetic Reversals Newly formed oceanic crust at spreading centers has the current polarity of Earth’s present magnetic field. As you go away from the spreading center, the polarity of the crust changes, or alternates back and forth. A rock’s polarity is defined when the rock cools (or when it is formed). This is evidence the Earth’s magnetic field has ________ many times in the past. Definite reasons for this are _________.

Magnetic Reversals Newly formed oceanic crust at spreading centers has the current polarity of Earth’s present magnetic field. As you go away from the spreading center, the polarity of the crust changes, or alternates back and forth. A rock’s polarity is defined when the rock cools (or when it is formed). This is evidence the Earth’s magnetic field has reversed many times in the past. Definite reasons for this are ________.

Magnetic Reversals Newly formed oceanic crust at spreading centers has the current polarity of Earth’s present magnetic field. As you go away from the spreading center, the polarity of the crust changes, or alternates back and forth. A rock’s polarity is defined when the rock cools (or when it is formed). This is evidence the Earth’s magnetic field has reversed many times in the past. Definite reasons for this are unknown.