Question

the jet stream
the jet stream is a narrow current of air that moves around the northern and southern hemisphere of the earth in wavelike patterns.

• it generally flows west to east.
• it moves very rapidly.
• it migrates with the seasons.
• the strongest winds are usually encountered above 30,000 feet.

fill in the blank.

1. the __________ is a narrow current of air that moves around the northern and southern hemisphere of the earth in wavelike patterns.
2. the jet stream generally flows from ________ to ________.
3. does the jet stream move fast or slow? __________
4. the strongest winds in the jet stream are usually encountered above __________ feet.
5. explain the land - sea breeze phenomena. __________

moisture

• water can be found in the atmosphere as a solid, liquid or a gas.
• relative humidity is the ratio of the existing water vapor in the air to its possible saturation point. dew point is the temperature at which the water vapor in the air condenses and becomes liquid.

1. __________ is the ratio of the existing water vapor in the air to its possible saturation point.
2. __________ is the temperature at which the water vapor in the air condenses and becomes liquid.

Explanation:

1. The text clearly states that the jet - stream is a narrow current of air moving in wavelike patterns around the Earth's hemispheres.
2. It is mentioned that the jet - stream generally flows west to east.
3. The text says it moves very rapidly.
4. It is stated that the strongest winds are usually encountered above 30,000 feet.
5. During the day, land heats up faster than water. Warm air over land rises, and cooler air from the sea moves in to replace it, creating a sea - breeze. At night, land cools faster than water. Warm air over the sea rises, and cooler air from the land moves towards the sea, creating a land - breeze.

For the moisture part:

1. The text defines relative humidity as the ratio of the existing water vapor in the air to its possible saturation point.
2. The text defines dew point as the temperature at which the water vapor in the air condenses and becomes liquid.

Answer:

1. jet stream
2. west; east
3. fast
4. 30,000
5. During the day, land heats up faster than water. Warm air over land rises, and cooler air from the sea moves in to replace it, creating a sea - breeze. At night, land cools faster than water. Warm air over the sea rises, and cooler air from the land moves towards the sea, creating a land - breeze.
6. Relative humidity
7. Dew point