Earth's Layers
Which one of Earth's layers is completely liquid?
The outer core
When and where did the earliest sea voyage take place?
3200 B.C in Egypt
What does SCUBA stand for?
Self contained underwater breathing apparatus.
What do you call someone who studies volcanoes?
Volcanologist.
What is a divergent plate boundary?
A spreading boundary where new oceanic crust is created to fill in the space as the plates move along.
Inner corner, outer corner, mantle, asthenosphere, lithosphere, crust.
Who invented the magnetic compass?
The Chinese.
What diving equipment is necessary for SCUBA?
Mask, fins, snorkel, wet suit, weight, regulator
What is a precursor to a volcanic eruption?
Inflation
What is a convergent plate boundary?
A tectonic boundary where two plates are moving towards each other.
Which layer of the Earth do earthquakes happen in.
The lithosphere/crust.
What was the first marine expedition entirely dedicated to science?
The HMS Challenger.
Who was the first person to scuba with compressed air?
Jaques Cousteau
What type of volcano is Kilauea?
A shield volcano
What is a transform plate boundary?
Where two plates slide past each other.
What layer of the Earth do convection currents form in?
The asthenosphere/mantle.
Who invented the chronometer?
John Harrison
What are medical aspects to keep in mind with scuba?
Hypoxia, salt water aspiration syndrome, and decompression sickness.
Kazumura cave
What is a barrier reef?
A sea mount that sinks or subsides slowly and continues to grow upward.
What layer does sea floor spreading occur?
Mid-ocean ridges.
What did ancient navigators use the Phoenician star for?
To navigate at sea.
what was the worlds deepest scuba dive?
1,000 ft
What are the two types of lava flow?
Aila'au (Aa) and pahoehoe
What is a fringing reef?
A sea mount that pierces the sea surface to form an island.