Aquarium Systems
What is the primary function of an aquarium filter?
To clean the water and maintain fish health
What is the definition of seafaring according to the text?
One who travels regularly
What is the atomic structure of a pure water molecule?
2 hydrogen atoms and 1 oxygen atom
What principle did Alexander Marcet discover in 1819 regarding seawater chemistry?
All main chemical ions maintain the same proportions throughout the world's oceans
Calculate the weight difference between an empty and filled 29-gallon aquarium
290 Lbs
What were the three main reasons for seafaring mentioned in the document?
Trade, Exploration and Food
Why are water molecules considered polar?
They have a positive end and a negative end
How is salinity typically expressed in marine science?
PPT Parts Per Thousands
How much water should be removed every few weeks from the aquarium?
1/4 of the tank
What material were Egyptian boats primarily constructed from?
Papyrus (grass and reeds)
What is the maximum number of hydrogen bonds that a single water molecule can form with neighboring water molecules?
Four
What action in nature would lead to diluted the salinity in the ocean
A river draining in to the ocean
What is the primary purpose of a heater in an aquarium?
To maintain proper temperature for tropical fish
How did ancient Phoenicians differ from Egyptians in their boat construction?
They used wood instead of papyrus
What property of water allows it to move upward in plants without the aid of gravity?
Capillary Action
What occurs in the halocline region of the ocean?
How does aquarium size correlate with maintenance requirements?
Larger tanks are better at staying clean and require less frequent maintenance
What tools did Polynesians use for navigation?
Sticks, shells, stars, and wave patterns
What happens to water's density when it freezes?
It decreases
What is the first step in the nitrogen cycle in marine environments?
Nitrogen Fixation