review #3 tragedy of the commons

Which of the following is NOT an example of commons?

• air
• ocean
• private beach
• forest

You can float a paper clip on top of water if you very carefully place it flat on the water surface because of the molecular skin created by the interaction of air molecules with the top layer of water molecules on the surface.

• true
• false

A water molecule is 'polar' because it looks like a seesaw: The oxygen atom is in the middle and hydrogen atoms are at opposite ends of the oxygen atom.

• true
• false

Which of the following is NOT a property of water?

• It is a universal solvent
• it expands when it freezes
• It can erode rock
• It can change temperature quickly

What is the y-axis scale for the graph below?

• hours per day
• time alone
• people with children
• 10 year age span

What type of chemical bond occurs when a hydrogen atom in one water molecule is bound to the oxygen in another water molecule ?

• Ionic bond
• Covalent bond
• Municipal bond
• Hydrogen bond

What explains why a water strider can skate along the top of a pond?

• water has a low surface tension
• covalent bonds result in surface tension
• hydrogen bonds result in surface tension
• none of the above

The ocean is a common area that all countries share- which country has the highest consumption of fish PER person?

• JAPAN
• CHINA
• UNITED STATES
• UNITED KINGDOM

Which historical example is used to illustrate the Tragedy of the Commons?

• Overfishing in modern oceans
• Air pollution in urban areas
• Overgrazing in medieval European villages
• global warming because of CFC's

What year was the peak of catching cod in Atlantic Northwest?

• 1965
• 1980
• 1999
• 2010