Local Wind
What causes wind?
Unequal heating of the Earth's surface.
What weather condition will most likely occur if isobars are spaced widely apart?
lighter wind, calm weather
What do we call a stream of water that flows in the oceans?
current
What happens to the air pressure as you go to the top of a mountain?
it decreases
A barometer measures ____________-
air pressure
The apparent curving of the global winds due to the Earth's rotation is called the
Coriolis Effect
What will most likely be the weather condition if isobars are close together?
strong winds, stormy weather
Benjamin Franklin discovered that the water below the ocean's surface is colder than the water on the ocean's surface. What is the reason for this?
cold water is more dense than warm water
The amount (percentage) of water vapor present in the air at a certain temperature is called
humidity
The weather instrument shown in the picture is a(n) ______, which measures _______.
wind vane, wind direction
In the figure below, what type of air pressure is over the water?
high pressure
Cold air is more dense so it take up more space than warm air; therefore, it has ______ pressure.
higher
What is the name of the warm ocean current that impacts Eastern USA?
Gulf Stream
When the humidity in the air is 100% what occurs?
condensation (clouds, fog, dew)
Which instrument could tell you that conditions are right for flying a kite?
anemometer
At night during a land breeze, what type of pressure is over the water?
low pressure
When air pressure rapidly falls, what weather change usually occurs?
a storm is approaching
What is the name of the ocean current bringing cold water down along the coast of California?
California Current
In order for a strong wind to blow from one location to another, what factor must differ between the two locations?
air pressure
Tommy is trying to decide is he needs to wear a jacket to the park today. What weather instrument would be most helpful for him to make this decision?
thermometer
Why does the cool air over the water move towards the land where the warm air is rising?
the ocean is colder and has high pressure and moves towards the warm land that has low pressure
How are climate conditions on the windward side of the mountain compared to the leeward side of the mountain?
cooler and wetter on the windward side
Where do cold currents originate from (come from)?
the poles
High pressure = what type of weather?
Low pressure = what type of weather?
happy highs (clear, dry)
lame lows (rain, storms)
If laundry that was hung outside to dry is still damp after several hours, what is most likely the explanation?
high humidity