Unit 4 Lesson 1: Earth’s Atmosphere

Unit 4 Lesson 1: Earth’s Atmosphere

Lesson target:

Students will recognize the different components of air and the different layers of Earth’s atmosphere.

Lesson objectives:

1) Identify the components of air

2) Identify the different layers of earth’s atmosphere

 

Importance of air for all living things without any exceptions.

What might the air we breathe consist of?

The elements of air.

Atmosphere is a mixture of gases.

The different layers of Earth’s atmosphere. Which appears to be the widest?

(The ozone layer).

Do you think that each layer has an effect on our Earth’s temperature?

(Answer: It should have an effect on the temperature)

ultraviolet radiation

 

a. Air is mostly nitrogen. (true)

b. The ozone layer is the thickest layer in the   atmosphere. (false)

 

Exercise 1: 

Name the 3 gases that form the air .

1. 78% Nitrogen

2. 21% Oxygen

3. 1% Other gases

Exercise 2: 

List the layers of Earth’s atmosphere.

1. Troposphere

2. Stratosphere

3. Mesosphere

4. Thermosphere

5. Exosphere

 

Exercise 3: 

Give short answers.

1. How can we obtain oxygen?

 We can obtain oxygen by breathing air.

2. What is the atmosphere made of?

The atmosphere is a gaseous mixture. It is made up of many layers.

3. What do fish breathe?

Fish breathe the oxygen dissolved in water.

4. What does the ionosphere refer to?

It is the Aurora, which is the Thermosphere+ Mesosphere.