Teaching Point: “To analyze the moisture in the atmosphere”Do Now Discussion: Turn to page 14 of your ESRT. How does water vapor and altitude in the atmosphere connect? Do you think there might be some water vapor up where astronauts orbit?

Water Vapor comes from:1.evaporation from water basins (oceans and lakes)2.transpiration from plants

Air has the ability to hold water vapor.

Humidity- the water vapor content of the atmosphere

Water Vapor in the Air

TP: “To analyze the water in Earth’s atmosphere.”

Factors for evaporation include the: 1.air temperature2.surface area exposed3.water vapor currently in the air4.wind speed.

Factors for Evaporation

TP: “To analyze the water in Earth’s atmosphere.”

Filling the Air with Water Vapor

TP: “To analyze the water in Earth’s atmosphere.”

Air Saturation- when the air is full of water vapor. Warmer air can hold more water vapor than cooler air.

Dew Point- the temperature when the air is saturated with water vapor

Quick Assessments• Take out your SMART clickers, and wait

for me to “start” your class

• Then, sign into my class and wait for the assessment to start

• As soon as the assessment starts, you have one (1) minute to answer the multiple choice question

TP: “To analyze the water in Earth’s atmosphere.”

Quick Assessments1. Which process of the water cycle

returns water directly to the atmosphere?

a. evaporation and transpirationb. infiltrationc. freezing and precipitation d. water retention and runoff

TP: “To analyze the water in Earth’s atmosphere.”

Quick Assessments2. Which weather factor controls when the

air is saturated with water vapor?a. amount of transpiration b. air pressurec. air temperature d. amount of precipitation

TP: “To analyze the water in Earth’s atmosphere.”

How can the season, angle of insolation, and air saturation be connected. How might you describe the relationship between the three?

TP: “To analyze the water in Earth’s atmosphere.”

Intellectual Engagement

Instructions: Using what we just learned about moisture in the atmosphere…Task A- Compare and contrast dew point and relative humidity. Task B- Draw a graph showing the relationships between 1) temperature and how much water air can hold. Explain why you drew the graph the way you did.Task C- Using page 14 of your ESRT and the relationship between altitude and temperature shown there, predict what happens to relative humidity as you increase your altitude. Explain how you predicted this.Flexible Group- take out your portfolios and meet me at my desk

TP: “To analyze the water in Earth’s atmosphere.”

Class Activity- Moisture

Lesson SummaryIn your tables of four, go back into your notes and consider what we have just learned today, and then…

1. Identify three (3) important concepts we learned today

2. Place those the three in order from the most important concept to least important.

TP: “To analyze the water in Earth’s atmosphere.”