9/10/1311th Day of School

Learning Goal (7.E.1.1): I will be able to describe the composition of Earth’s atmosphere (what it’s made of)

Due Today: pocket folder

Evening Assignment: Work on atmosphere composition slides of Powerpoint

Do Now

In your composition notebook, copy and answer the following…

What is Earth’s atmosphere made of?

McDougall textbook, p. viii

Do Now

Did you get it right?

What is Earth’s atmosphere made of?• Gases (air)• Particulates• Energy (ex. Heat, radiation, etc)

Defining key words

What is the atmosphere?Look up and write down the definition for atmosphere from two different sources.• Textbook:• Science dictionary:• Webster’s dictionary:• Computer dictionary:• Online:

McDougall textbook, p. A11

Defining key words

What is the atmosphere?• Envelope of gases surrounding Earth• Layer of gases that surrounds Earth• Mixture of gases that surround Earth

McDougall textbook, p. A11

Composition of Earth’s Atmosphere

Most of the materials in Earth’s atmosphere are gases

• 78% Nitrogen• 21% Oxygen• 1% (Argon, CO2, and other

gases)• Up to 4% water vapor• Essential for life

McDougall textbook, p. A11

Composition of Earth’s Atmosphere Most of the materials in Earth’s atmosphere are gases

• 78% Nitrogen• 21% Oxygen• 1% (Argon, CO2, and other gases)• Up to 4% water vapor• Essential for life

It also contains solid & liquid particles (particulates)

• Dust• Sea salt• Fungal Spores • Viruses & bacteria• Pollen• Water droplets

http://www.dustcollectorsource.com/hepafiltration.html

The Composition makes life on Earth Possible.

1. Living things use gases in the air:• oxygen, nitrogen, argon, carbon dioxide, &

water vapor2. The atmosphere keeps Earth warm.• Transports energy to different regions of the

planet (radiation, conduction & convection).3. The atmosphere protects & supports life.4. Supplies materials that your body uses.

Major Assessment

Assignment: Earth’s Atmosphere PowerpointYou will make a Powerpoint presentation about Earth’s atmosphere. You may use information and pictures from class, the textbook, other books, and the Internet but you MUST cite your sources (ex. title, page, web address, etc). Include text in your own words explaining any images you use. Your Powerpoint should have the following slides. Final Powerpoint is due Friday 9/13/13.

• Title slide with title, your name, period, date• Slide defining atmosphere• Slide(s) about the composition of Earth’s atmosphere• Slide(s) about the properties of Earth’s atmosphere• Slide(s) about the structure of Earth’s atmosphere

Evening Assignment

Work on Title, atmosphere definition, and Earth’s atmosphere composition slides.