Q1 What does barometric pressure measure?

1. the increase in temperature as elevation increases
   
   
   
2. the pressure of 1 metric ton of seawater
   
   
   
3. the pressure of the atmosphere
   
   
   
4. the increase in the weight of the atmosphere as elevation increases
   
   

Q2 What instrument is used to measure barometric pressure?

1. ceilometer
   
   
   
2. barometer
   
   
   
3. anemometer
   
   
   
4. thermometer
   
   

Q3 What are the lines on a weather map that connect places of equal pressure called?

1. isobars
   
   
   
2. isotherms
   
   
   
3. pressure of gradient forces
   
   
   
4. latitude lines