Population Math Practice Quiz - Sue O'Bannon | Library

Instructions

Choose the best answer to each question. You may use the "Show your work" area to do your calculations.

1

The country of Burundi is doubling its population about every 28 years, what is its growth rate?

1

If 2000 wolves live in an area of about 500 square kilometers, what is the population density of those wolves?

1

A small country has 400,000 people. 4000 babies are born and 1000 people die. 1500 people immigrate to that country and 500 people emigrate. What is the growth rate?

1

Singapore’s area of land is 130 square kilometers and its population density is 8,350 people per square km. The number of people in Singapore is closest to:

1

The United States growth rate is about 0.7%. About how long to double?

1

Idaho’s growth rate in 2017 was 2% with 1.75 million people. In how many years will Idaho reach 7 million people if it continues to grow at this rate?

1

A species of bird populated a new breeding ground. The first year, 350 birds bred there. 2800 birds bred there 21 years later. What was the growth rate for this breeding ground?

1

Ohio is growing slowly at 0.67%. Ohio had 11.7 million people in 2019. How many people is Ohio expected to add the following year?

FRQ
Elkhorn Slough is a tidal salt marsh just north of Monterey, California. Many species live in the slough including a population of the endangered Southern Sea Otter. There are about 2800 Southern Sea Otters left in the wild. About 5% of the total population live in the slough. Each year, about 15 otter pups are born, and about 2 die in Elkhorn Slough. Otters move in and out of the slough to hunt, give birth or sleep. Over the course of a year, about 50 otters move into the slough and about 60 leave.

1

Calculate how many Southern Sea Otters live in Elkhorn Slough.

1

Calculate the overall annual growth rate of Southern Sea Otters in Elkhorn Slough.

1

Calculate the doubling time of the population of Southern Sea Otters in Elkhorn Slough.

Elkhorn Slough only has enough resources for a limited number of otters.

1

Define carrying capacity.

1

Identify TWO density-dependent limiting factors and ONE density-independent limiting factors that could limit the population of otters in Elkhorn Slough.