Continetal Margins
Why is multibeam echosounding more useful than single-beam echosounding for mapping the seafloor?
It maps a wider area in one pass
Which is usually larger in value?
Atomic Number
Atomic Mass
Atomic Mass
Biogenous sediments are formed from
Remains of living organisms
A __________________ is a layer in the ocean where temperature changes rapidly with depth.
thermocline
Which state of water has the greatest molecular motion?
Water vapor
Which part of the continental margin is the steepest
Continental slope
What happens when an atom loses electrons?
It becomes an ion
How are submarine canyons formed?
Turbidity currents carrying sediments downhill
Why does sweating cool your body?
Evaporation removes heat from the skin
Two identical containers of water are placed in a 22°C room. One is 80°C and one is 40°C. Which reaches room temperature first?
The 40°C container
Name a feature common at an active continental margin
Earthquakes, Volcanoes, Active plate boundaries
Adding a neutron to an atom creates a new...
Isotope
Cosmogenous sediments come from...
Space and extraterrestrial sources
What happens to energy when water freezes?
Energy is released into the surroundings
Explain water’s role in climate?
Water stores and moves energy through phase changes
Why are continental shelves rich in marine life?
Rivers carry nutrients into the ocean, shallow depths are high in photosynthesis
Adding a proton to an atom creates a new...
Element
Tectonic activity affects continental margins by...
Determining whether they are active or passive
Which process releases heat into the surrounding air?
Condensation
Coastal climates are moderated because water absorbs and releases heat very...
slowly
Why do passive continental margins usually have wider continental shelves?
With little tectonic activity, sediments build up over long periods
Atomic mass is found by adding together the number of...
Protons and neutrons
A marine scientist observes that a particular ocean region has high biogenous sediment accumulation. What environmental conditions would best explain this observation?
The region has high biological productivity in surface waters
During evaporation, water ___________ heat from its surroundings.
absorbs
Latent heat is the hidden energy involved in a ______ change.
phase