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41.

Alfred Wegener and Continental Drift

Geophysicist and geologist Tanya Atwater discusses the role of Alfred Wegener in bringing together a variety of evidence in support of the theory of continental drift.
Online
2015; 2011
42.

Internal Waves

Renowned oceanographer and geophysicist Walter Munk talks about the role of internal waves in ocean dynamics. He notes that only in recent years have oceanographers come to understand that internal waves can have a profound impact on what happens near the shore.
Online
2015; 2011
43.

Scripps Institution #3

Professor Trujillo interviews Dr. Dimitri Deheyn who discusses bioluminescence.
Online
2018; 2010
44.

Scripps Institution #1

Professor Trujillo interviews Dr. Michael Latz from the Scripps Institution of Oceanography who gives an overview of the institution's programs and facilities and discusses bioluminescence.
Online
2018; 2010
45.

Octopus

While exploring the intertidal zone at a San Diego beach, Professor Trujillo focuses on the octopus.
Online
2018; 2010
46.

Pangaea

Geophysicist and geologist Tanya Atwater talks about the super continent Pangaea, thought to have broken up into the continents as we know them today beginning about 200 million years ago.
Online
2015; 2011
47.

Plate Tectonics and Earthquake Distribution

Geophysicist and geologist Tanya Atwater talks about the correlation between plate boundaries and earthquake distribution.
Online
2015; 2011
48.

Children's Pool

While exploring the intertidal zone at a San Diego beach, Professor Trujillo focuses on the children's pool.
Online
2018; 2010
49.

Wavy Turban Snail

While exploring the intertidal zone at a San Diego beach, Professor Trujillo focuses on the wavy turban snail.
Online
2018; 2010
50.

How Tides Work

Renowned oceanographer and geophysicist Walter Munk talks about the role of gravity and the Moon in tidal processes. He also discusses early ideas about tides in the days before Sir Isaac Newton developed his theory of gravity.
Online
2015; 2011
51.

Sea Anemone

While exploring the intertidal zone at a San Diego beach, Professor Trujillo focuses on the sea anemone.
Online
2018; 2010
52.

Ocean as a Sound Channel, the

Renowned oceanographer and geophysicist Walter Munk talks about differences in the ways sound travels in the ocean as compared to through the air. He observes that the ocean is an ideal medium through which sound can travel.
Online
2015; 2011
53.

Sea Level Change Over Time

Renowned oceanographer and geophysicist Walter Munk talks about the rise in sea level since the last Ice Age. Professor Munk notes that the geologic record indicates that sea level has risen by one hundred and twenty meters since that time--an amount Dr. Munk calls "enormous."
Online
2015; 2011
54.

Oceanic Crust vs. Continental Crust

Geophysicist and geologist Tanya Atwater discusses the differences between continental and oceanic crust. Continental crust tends to be much thicker and would be thicker still were it not for the forces of gravity and erosion. In addition, oceanic crust forms as a result of seafloor spreading, while continental crust is made at subduction zones from the same melting material that rises to make volcanoes.
Online
2015; 2011
55.

Moon, the Sun and Tides, the

Renowned oceanographer and geophysicist Walter Munk talks about the relative roles of the Sun and the Moon in tidal processes. He observes that, over time, the Moon is moving further away from the Earth. While the gravitational impact of the Moon is now greater than that of the Sun, eventually, the ratio will be reversed.
Online
2015; 2011
56.

Plate Tectonics and Heat

Geophysicist and geologist Tanya Atwater talks about plate tectonics as a mechanism by which Earth's interior sheds the tremendous heat that builds up as a result of radioactive decay.
Online
2015; 2011
57.

Sea World #1

Senior Animal Care Specialist, Alaina Jasso, talks about Sea World's animal rescue program and the steps she took to pursue a career at Sea World.
Online
2018; 2010
58.

Wave Prediction and Military Operations

Renowned oceanographer and geophysicist Walter Munk talks about the role wave prediction played in the planning of amphibious landings during World War II.
Online
2015; 2011
59.

Whale Barnacles

Professor Trujillo discusses the barnacles and lice that attach themselves the skin of gray whales.
Online
2018; 2010
60.

Mussels

While exploring the intertidal zone at a San Diego beach, Professor Trujillo focuses on mussels.
Online
2018; 2010