Unique Nature of Pure Water
This is the temperature at which pure water freezes.
What is 0°C (32°F)?
This term describes the amount of dissolved salts in seawater.
What is salinity?
The pH of seawater is usually slightly what.
What is alkaline?
Ocean acidification is mainly caused by this gas entering seawater.
What is carbon dioxide (CO₂)?
Plants and algae use this process to remove CO₂ from the atmosphere.
What is photosynthesis?
Water is known as the "universal" one of these because many substances dissolve in it.
What is solvent?
Warm water has (more/less) density than cold water.
What is less density?
These two ions make up most of the dissolved salts in seawater.
What are sodium and chloride?
When CO₂ dissolves in seawater, it forms this weak acid.
What is carbonic acid?
This large body of water is one of Earth's biggest carbon “sinks.”
What is the ocean?
This property allows some insects to walk on water because of the “film” on the surface.
What is surface tension?
When salinity increases, this physical property also increases.
What is density?
What number on the ph scale is the ocean water?
What is 8.0-8.3?
Ocean acidification makes it harder for organisms like corals to build shells made of this mineral.
What is calcium carbonate?
Animals return carbon to the atmosphere when they do this.
What is respiration?
This is the reason ice floats—its molecules spread out as it gets colder.
What is lower density in solid form?
iIs there an increase or decrease in pressure with ocean depth.
What is increase?
Rainfall can lower ocean salinity, while evaporation does this to salinity.
What is increase it?
Ocean acidification can weaken coral reefs, making them more vulnerable to this natural event.
What is erosion?
The ocean is called a carbon "sink" because it does this to atmospheric carbon.
What is absorbs it?
Water can absorb a lot of heat without changing temperature quickly. This is known as high ________.
What is high specific heat capacity?
The speed and sound of seawater is affected by which three factors.
What is temperature, pressure, and salinity
When seawater becomes more acidic, carbonate ions react to form more of this substance, reducing the carbonate available for shells.
What is bicarbonate?
Name one marine organism that is highly threatened by ocean acidification.
What are corals / shellfish / plankton?
This global cycle connects the atmosphere, oceans, land, and living organisms through carbon exchange.
What is the carbon cycle?