Unit 4 Pop & Mig Practice Test

The number of years it takes a population to double in size based on its current growth rate

• death rate
• mortality rate
• birth rate
• doubling time

Which of the following is NOT a challenge to a growing population?

• Overcrowding
• Housing shortages
• Overuse of resources
• Increased food supplies

The average number of people per square mile

• population distribution
• population density
• urbanization
• population rate

Leaving one's home to live in a new place

• Emigration
• Immigration
• Urbanization
• Ruralization

Which of the following is a PULL factor for immigration?

• Natural disasters
• War
• Violence
• New job

 On remote islands, immigration and emigration usually do not have a large effect on population sizes. A bird population on a remote island remains at a relatively constant size year after year. Which of the following most likely describes the birthrate and the death rate for this population? 

•  Birthrate and death rate are both zero 
•  Birthrate and death rate are close to equal. 
• Birthrate is significantly less than death rate. 
• Birthrate is significantly greater than death rate. 

Angel was trying to explain carrying capacity to her mother.  Which of the following descriptions is accurate? Carrying capacity is :

• the maximum number of individuals that an ecosystem can sustain. 
•  the ability of an environment to accommodate a growing population. 
• the greatest number of individuals that an area can sustain over the long term. 
• the maximum number of species that can co-exist in an area. 

What is life expectancy?

• The number of years needed for one to reach 60 years.
• The number of years that a person is expected to live on his/her own.
• The number of years that a person is expected to live.
• What one expects to face in life.

What is international migration?

• When people emigrate from one place to another within the same country.
• When people emigrate from one country to another.
• When people emigrate to foreign countries.
• When people emigrate in big cities.

What is a population pyramid?

• A type of graph showing the number of males and females in different age groups.
• A type of graph showing the number of males in different age groups.
• A type of graph showing the number of females  in different age groups.
• A type of graph showing the number of males and females in only one age group.