Physical Science

Mrs. Harris ~ Sept.10, 2010

In the news: Oil Spills

Let’s look at some numbers: An estimated 190,120,055 gallons of oil have

leaked into the Gulf of Mexico. Oil is sold in barrels. There are 42 gallons of oil

per barrel. How many barrels of oil have leaked into the

Gulf of Mexico?

________about 4.5 million barrels_______________

42 gallons of oil1 barrel

190,120,055 gallons of oil4,526,667 barrels

By dividing the gallons in the Gulf by the number of gallons per barrel.

190,120,055 gal of oil? barrels

What do we get from oil?

Let’s talk about gasoline: For every barrel of oil (42 gallons), we can get

19.5 gallons of gasoline. From our calculation of __________ barrels of oil

in the Gulf of Mexico, how many gallons of gas could have been produced?

___________________________________

19.5 gallons of gas1 barrel

? Gallons of gas4,500,000 barrels

4.5 million barrels divided by 19.5 gallons of gas.

230,769 gallons of gas

230,769 gal of gas4,500,000 barrels

Let’s talk about gasoline: If 19.5 gallons of gas can be made from 1

barrel (42 gal), what % of each barrel can be made into gas?

___________________________________

19.5 gallons of gas 42 gallons (per barrel) = 0.4

6= 46%

46%

Next week:

Unit 2 Characteristics of pure substances and

mixtures

Bring a picture of yourself to share with your group.

Mrs. Harris’s nickname in college.