Use the table. What does the gravity model predict for Pair B compared with Pair A?

The table compares two city pairs. How should Pair D's predicted interaction compare with Pair C's?

Read the table and compare the two pairs under the gravity model. What is Pair B relative to Pair A?

Based on the table, which comparison is predicted by the gravity model?

Use the table to decide which pair has the stronger predicted interaction.

The table gives populations and distance for two pairs. What comparison does the gravity model support?

Use the table and the gravity model (population times population, divided by distance squared). What is the best prediction for Pair M compared with Pair L?

Using the table, compare the gravity-model prediction for Pair N and Pair O.

The table shows two possible city interactions. What does the gravity model predict for Pair Q compared with Pair P?

A causeway cuts the travel distance between two cities in half while their populations stay the same. What happens to predicted interaction?

One city's population doubles while the other city's population and the distance between them do not change. What does the gravity model predict?

Two cities both double in population, and the distance between them stays fixed. What is the predicted change in interaction?

The road distance between two cities triples, with both populations unchanged. What does the gravity model predict?

A city loses half its population while the paired city and the distance stay the same. What happens to predicted interaction?

A new toll route makes the effective distance between two cities twice as far while their populations stay the same. What is predicted?

Read the city populations and distances in the table. Which pair has the strongest predicted interaction?

In the table, each row gives a city pair's populations and distance. Which pair should have the greatest interaction?

Use the populations and distances in the table. The gravity model predicts the strongest interaction for which pair?

The table lists four city pairs. Which pair has the highest predicted interaction under the gravity model?

From the table, select the pair the gravity model would rank as strongest.

Use the table of city pairs. Which pair should show the greatest interaction?

A model predicts heavy shopping trips from City A to City C, but a similar mall in City B between them captures many trips. What concept explains the shortfall?

Northport has many workers looking for jobs, and nearby Metro City has many open jobs. Which concept explains why commuters flow between them?

A flow map shows many applicants to University C from nearby towns and far fewer from towns farther away. Which concept does this pattern show?

A new rail freight line cuts the cost and time of shipping goods between two large cities, and freight flow between them rises. Which concept has increased?