Welcome Back! Greet your partner and silently read through the short script and answer the three questions provided

Goldilocks and the Three Bears

7.E.1.1 Compare the composition, properties and structure of Earth’s atmosphere to include mixtures of gases and differences in temperature and pressure within layers.

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I will be able to understand Goldilocks Principle in relation to the importance of the Earth’s atmosphere and how it sustains life

I will be able to answer the following questions:•Compare and contrast Earth’s atmosphere to that of Venus and Mars. You may draw pictures to describe the difference, create a Venn diagram, draw a chart, or just write a description.•Explain how Earth’s atmosphere functions to keep us alive.•Predict what would happen to an astronaut if he were to take off his mask on the three different planets(Earth, Venus, and Mars)

Today’s Purpose

The mixture of gases surrounding the Earth or other celestial body, held in place by gravity

What does it mean by mixture?Different types of gases blended together. For example, oxygen, nitrogen, carbon dioxide, water vapor, etc.

Mixture can be separated.For example, trail mix is a mixture. You can separate the raisins from the almonds and M&M’s

How do you separate a mixture of air? It’s gases mixed together. Through a process called fractional distillation, the gases are cooled and compressed and expanded to liquefy them. Elements and compounds have different temperatures that they liquefy. http://scifun.chem.wisc.edu/chemweek/pdf/airgas.pdf

What is an atmosphere?

Place the correct pie chart with the correct planet.

Hint: Think about what gas should be present or absent to make a planet too hot, too cold, and just right

It’s All About the Percentages

Venus (too hot)•2nd planet from the sunSimilar atmosphere composition to Mars•96.5% CO2

•3.5% N2

•trace O2

Very dense atmosphere•CO2 concentration causes hot temperature and very hot greenhouse effect•Too hot to sustain life•Very high pressure

Image found at: https://encrypted-tbn3.gstatic.com/images?q=tbn:ANd9GcS92biLdEv7Pk71X1U1veD207z1bqfLqm1_PeLYtP8cxSynm7V2

Greenhouse Effect

•Trapping of the sun’s radiation by the combination of gases found in the atmosphere, which causes a planet to warm•CO2 concentration usually behind the trapping of infrared radiation•Other gases include water vapor, methane, and CFC’s

Mars (too cold)

•4th planet from the sunVery thin atmosphere•95% CO2

•2.7% N2

•0.13% O2

Due to thin atmosphere CO2 concentration has no effect on warming the planet, very low surface temperature•Too cold to sustain life•Very low pressure

Image found at: https://encrypted-tbn3.gstatic.com/images?q=tbn:ANd9GcS92biLdEv7Pk71X1U1veD207z1bqfLqm1_PeLYtP8cxSynm7V2

Earth (just right)•Just the right amount of greenhouse gases (CO2, water vapor, methane) to warm the planet to sustain lifeComposition of atmosphere•78% N2

•21% O2

•0.9% Ar•Trace amount of greenhouse gasesLife on Earth helps sustain our atmosphere through the cycling of oxygen via photosynthesis •Without life Earth would either be like Mars or Venus•Pressure in between Mars and Venus

Image found at: https://encrypted-tbn3.gstatic.com/images?q=tbn:ANd9GcS92biLdEv7Pk71X1U1veD207z1bqfLqm1_PeLYtP8cxSynm7V2

Wrapping it Up

•At the bottom of your notes answer the three questions that were asked at the beginning of the period with the correct answer in complete sentences•In the left margin of your paper come up with three questions to ask about the notes you just taken For example, Compare and contrast the atmosphere of Venus and Mars Worksheet found at: http://kristinbergsagel.edublogs.org/files/2010/11/Cornell-Note

s-Levels-of-Questions-WITH-ANSWERS-pkix1j.pdf

Homework

Complete the reading dealing with the composition of the Earth’s atmosphere and complete the worksheet comparing cakes and the atmospheric gases

Document found at: http://betterlesson.com/document/36678/activity-2-cake-ingredients-and-gases-in-the-atmosphere

Quick WriteFor the next two

minutes, write as many facts that you recall from

yesterday. Be sure write the entire

two minutes

I will be able to understand how the chemical composition of the atmosphere allows for life on Earth

Tasks for today1. Bellringer dealing with quick write of what you

remember from previous day2. Complete notes dealing with chemical composition of

Earth’s atmosphere3. Whiteboard review-you will be working with group to

recall definitions, answer questions about atmosphere chemical composition

Today’s Purpose

Image found at : https://encrypted-tbn1.gstatic.com/images?q=tbn:ANd9GcS0zTom1FjVxoaDHBBAm-JN2oj2q12zetv3W5CzFvoOvsAcNTBxqQ

•Too much—more than 40% is toxic to humans begins to destroy cell structure and function•Too little— less than 16.5% humans blackout•Just write—21% human body functions properly

Oxygen Concentration

O2

O2

O2O2

O2

O2

O2

Whiteboard Review1. Define the terms (picture, definition, context clue

sentence)a. Atmosphereb. Chemical compositionc. Mixtured. Greenhouse Effect

2. Compare and Contraste. Earth’s atmosphere vs. Venus’f. Earth’s atmosphere vs. Mars’

3. Explain why Earth’s atmosphere allows life on Earth4. Explain what needs to happen to Venus’ atmosphere

for it to be suitable for life5. Explain what needs to happen to Mars’ atmosphere

for it be suitable for life

Ticket OutWrite 3 test questions and the answer for each dealing with Earth’s atmospheric composition.

Glad to Have You!!! Please fill out the check off sheet

HomeworkFind a news article about the atmosphere. Complete the graphic organizer about what you read.

Welcome Back! Discuss with your partner the article that you read from the previous night. Write 3 facts from each article discussed.

Goldilocks and the Three Bears

7.E.1.1 Compare the composition, properties and structure of Earth’s atmosphere to include mixtures of gases and differences in temperature and pressure within layers.

Goldilocks Principle

Goldilocks' Principle

Atmosphere Display

Create a titlePlace the appropriate amount of cotton balls in each bagLabel the bag with the planet it representsCreate a pie chart that represents the correct amounts of gasesAnswer the questions at the end Complete the presentation completely

Colors for GHGs

Nitrogen= red

Oxygen= green

Argon=purple

Carbon dioxide = yellow

Methane =white

HomeworkComplete 2 on the clock homework questions dealing with the atmosphere

Glad to Have You!!! Please fill out the check off sheet

Think about the composition of the Earth’s atmosphere. Fill in the handout with the role that the atmosphere plays for the various human life necessities

Human Survival

Today’s PurposeI will be observing the effect of the amount of atmospheric gases on life on earth

I will be completing a module that simulates what happens when the various gas levels change

Questions to answer by the endList the atmospheric conditions necessary for life on Earth. Explain the importance of each.Predict what happens to the Earth if each condition was not present.

Atmosphere’s Role for LifeHuman Needs Reason What factors of the atmosphere

provide this? Food Gives us energy so that we can

move, grow, and function. It also gives us nutrients to build and mend bones, teeth, nails, skin, hair, flesh, and organs.

Oxygen Helps us to obtain energy from sugars.

Water Allows nutrients to circulate through the body. Helps to regulate body temperature. The cells that make up our bodies are made mainly of water.

Moderate temperature (Average global temperature above 0°C and below 50°C)

Allows us to maintain an average body temperature of 98.6°F/37°C and to maintain water in a liquid state at all times.

Protection from poisonous gases and high levels of radiation

To prevent cancer, disease and damage to the body.

Gravity Allows our biological systems to develop and function normally. Holds the atmosphere to the Earth so it doesn’t escape into space.

Astro-Venture Tasks1. First , you are going to complete a Training Module2. You are going to be changing the amount of gases 3. You are going to write detailed observation s about

what happened ex. When the _____ was lowered first, the fish

died. Then the grass and trees died. And finally all the animals died. The temperature dropped. Lowering ____made life on Earth cease and lowered the temperature.

3. Your second module is a Challenger module. You may need to refer to your notes for assistance for completion.

http://astroventure.arc.nasa.gov/teachers/pdf/AV-Atmoslesson-1.pdf

Teach your parent/guardian/sibling about what you have learned this week. You must teach them for 15 minutes. After you have taught them for 15 minutes, they must write a summary about what they learned, how well you taught them, and how you can improve teaching them. Parent must sign and date it.

Homework