WONDER #799: What Is a Cold Front?

Question 1 of 3

The boundary between air masses of different temperatures is known as a what?

  1. airline
  2. front
  3. airlock
  4. cloudline

Question 2 of 3

Colder air is more what compared to warm air?

  1. dense
  2. polluted
  3. pure
  4. oxygenated

Question 3 of 3

Cold fronts usually move from northwest to which direction?

  1. northwest
  2. northeast
  3. southwest
  4. southeast

Check your answers online at https://wonderopolis.org/wonder/what-is-a-cold-front.