Quiz: What You Don't Know About Oil Spills
Oil from the Gulf spill coats beach sand at the mouth of the Mississippi River, south of Venice, Louisiana. Photograph by Jordan Burke, Bloomberg/Getty Images
You know that the Gulf of Mexico is now the scene of one of the worst environmental disasters in U.S. history, but how much do you really know about oil spills?
Why is the orange color of some of the oil a cause for worry?
- The oil scatters light and produces the color as it moves close to shore.
- The oil particles have combined with the chemical dispersant.
- The oil has emulsified with water and increased in volume.
- The color signals that deep plumes are floating beneath the surface.
Emulsification, which occurs more quickly in heavy wind and waves, significantly increases oil volume and viscosity.
Why hasn’t observation of the water surface yielded an accurate size of the BP spill?
- The spill is so deep underwater.
- Chemical dispersants are mixing oil into the water.
- The physical properties of the oil are changing in the water.
- All of the above
All of the above are true. Scientists have confirmed that some oil is beneath the water surface, which is believed to be due to a variety of factors.
In the Gulf of Mexico, ultra-deepwater wells like the BP spill site (5,000 feet/1,524 meters or more below the surface) only began to ramp up production in 2004. How much of Gulf oil production came from ultra-deepwater wells in 2009?
- Less than 10 percent
- About 25 percent
- About 33 percent
- About 75 percent
Ultra-deepwater production ramped up quickly to nearly a third of Gulf of Mexico production by 2009.
Evaporation is a major mechanism for removing petroleum spills. But why would evaporation happen more slowly from the BP spill than from many other spills?
- Because it is crude oil, not refined gasoline that evaporates easily
- Because the oil has been mixed with chemical dispersant
- Because of the rate at which the oil is flowing from the well
- Because it is coming from a deepwater well
Crude oil directly from a well evaporates less easily than lighter refined products like gasoline.
What is the main action of the chemical dispersants being used?
- They allow the oil to spread on the surface.
- They allow the oil to mix with the water.
- They help the oil to evaporate more readily.
- They spread the oil on the sea bottom.
The purpose of chemical dispersants is to cause oil to mix into the water column, to reduce the potential that a slick will reach the shore.
What safety measure is required for offshore drilling operations in Norway and Brazil, but not in the United States?
- Blowout preventers for wells
- Relief wells drilled at same time as primary wells
- Oil dispersant on hand
- Remote-control shut-off systems
Norway and Brazil both require drilling operations to have acoustic remote-control shut-off systems. This has not been required in the United States.
How much oil naturally seeps into the Gulf of Mexico every day, according to the National Research Council?
- 30,000 barrels
- 1,300 barrels
- 13 barrels
- 3 barrels
About 1,300 barrels naturally seep into the Gulf every day, which is a tiny fraction of the spill rate from the BP site.
Oil spilled from offshore production facilities in the Gulf of Mexico during the 2005 hurricanes Katrina and Rita was equivalent to how many days of flow from the BP spill?
- A little less than 1 hour
- A little less than 1 day
- A little less than 1 month
- A little less than 1 year
The oil spilled from offshore facilities in 2005 was about 14,676 barrels—less than one day’s flow from the BP site.
How much oil was recovered from the 1989
- 2 percent
- 14 percent
- 31 percent
- 54 percent
Only 14 percent of the
What was the final compensation and damages received per person for the Alaska fisheries and other businesses that sued Exxon over the losses they suffered in the
- $3 million
They received $15,000 in compensatory damages and $15,000 in punitive damages after the U.S. Supreme Court in 2008 greatly reduced the punitive award.
Excellent work. Your spill knowledge runs deep.
Good start. See if the answers flow when you try the quiz again.
Your spill awareness needs work. Watch out for slicks and try the quiz again.
Don't worry if you’ve taken a spill on this quiz. Try learning more by visiting The Great Energy Challenge, and then retake the quiz to see how much you’ve learned.Retake Quiz
More Energy Quizzes
You know that demand in Asia is moving energy markets around the world, but how much do you really know about the needs and resources of the world's most populous continent?
Historians say the modern era of energy began on October 17, 1973, when Arab exporters unleashed the "oil weapon" with an embargo against the United States and its allies. How much do you know about the global oil shocks of the past 40 years and how they changed the world?
Every few years, the Intergovernmental Panel on Climate Change (IPCC) releases a new summary of the scientific consensus on climate change. How much do you know about the forces altering the Earth's temperature, according to the IPCC's September 2013 report?
You know that climate change is reshaping the Arctic, but how much do you really know about how shrinking sea ice is opening up the resources at the top of the world for exploration and development?
You know how often you need to charge your smartphone, but how much do you really know about the batteries we rely on for energy storage?
Great Energy Challenge Blog
@NatGeoGreen on TwitterTweets by @NatGeoGreen
Great Energy Challenge Blog
Working Toward Smarter Cities
From better mass transit to a stronger mix of renewable energy, what is the most important thing we can do to make cities smarter when it comes to energy use?
Istanbul, the only city in the world that spans two continents, is a perfect setting for a close look at the energy and sustainability challenges of our increasingly urban planet.