1. How much water is contained in the Great Lakes?

a) Six quadrillion gallons

b) Six hundred million gallons

c) Six grizillion gallons

d) Six times the water contained in the polar ice caps

2. A new invasive species is identified in the Great Lakes:

a) Every 10 to 12 days

b) Every eight months

c) Every three years

d) Every time an ocean-going ship exchanges ballast water

3. Which of the following Great Lakes organisms is native to the Lakes?

a) Perch

b) Lake trout

c) Rainbow trout

d) Jet ski

4. Retention time (time it takes water and pollutants to circulate out of the system) of Lake Superior:

a) 4.5 centuries

b) 191 years

c) 11 months

d) 18 hours

5. Percentage of Michigan's land area that drains into the Great Lakes:

a) 75

b) 95

c) 100

d) 104

Answers to Great Lakes Trivia Quiz:

1. a, 6 quadrillion gallons. That's a six with 15 zeros!

2. b, every 8 months

3. a and b, perch and lake trout

4. b, 191 years

5. c, 100 percent