TCI Unit 3 Lesson 3-4

You can use an anemometer to measure the

• direction of the wind
• temperature of the air
• speed of the wind
• distance air moves

Which of these is true about a wind that blows from north to south?

• It is a north wind
• It is a south wind
• It is a summer wind
• It is a winter wind

How is warm air different from cool air?

• Warm air sinks, cool air rises
• Warm air is lighter than cool air
• Warm air moves more slowly than cool air
• Warm air has a lower temperature 

What are clouds made of?

• very light cotton
• small animals
• slow moving wind
• tiny droplets of water

Which example show that the time of year can affect wind patterns?

• Westerlies blow from west to east
• Wind speeds can increase during a storm
• The Santa Ana winds blow from the dessert to the ocean from fall to spring
• Easterlies blow from east to west across tropical areas

During the day, which is cooler?

• water
• land
• neither
• both

What does radar do?

• finds the distance of objects
• track precipitation
• show the type of precipitation
• all of the above

A rain guage

• measures how hard rain is falling
• measures how much rain has fallen
• tracks precipitation
• shows the type of precipitation

This form of precipitation melts as it falls and freezes again before it lands

• ice
• rain
• sleet
• snow

Precipitation happens when water 

• falls to the ground
• changes into a liquid
• turns into water vapor
• becomes part of the air