Week # 5 Q.4 (4/21) Homework:Progress reports Friday

Activities/Assignments:• Atmosphere

poster• Begin graphing

activity of atmospheric layers

Today in I.S.…I.S. Learning Goal:I can analyze the factors used to explain structure and function of the various layers of the Earth

Warm Up: week 5 Which layer of atmosphere contains ozone?

Fact: The Earth is wrapped in a layer of gas called atmosphere. Atmosphere is tied to Earth by gravitation, so that it cannot disperse in the space. It is 500 km (300 mi) thick, being made of a mix of about 10 gases, called air.

http://www.ozonelayer.noaa.gov/science/basics.htm

General, Organic, and Biological Chemistry Copyright © 2010 Pearson Education, Inc.

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1. Read Article- The Earth’s Atmosphere

*only read introduction, layers and your assigned layer- write on paper.

2. Underline/highlight the main ideas3. In margin of each paragraph write the key point(s)4. In group compare #2 & 35. Put answer onto handout Data Table 1

General, Organic, and Biological Chemistry Copyright © 2010 Pearson Education, Inc.

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6. Rotate groups so that each group has a person 1 person 2 person 3 person 47. Each person is responsible to teach you about the layer of the atmosphere*Each person choose a color (different)* Each person write their name in their color on paper*teach group about your layer of the atmosphere on butcher paper and have remainder of group members

copy onto handout

Week # 5 Q.4 (4/22) Homework:Progress reports Friday

Activities/Assignments:• Complete Student

worksheet-atmosphere

• Graphing activity of atmospheric layers

Today in I.S.…I.S. Learning Goal:I can analyze the factors used to explain structure and function of the various layers of the Earth

Warm Up: What do you think happens to the pressure(force) of air as you go up in elevation from the surface of the Earth?

Fact: The Earth's atmosphere is more than just the air we breathe. It's also a buffer that keeps us from being peppered by meteorites, a screen against deadly radiation, and the reason radio waves can be bounced for long distances around the planet.

http://kids.earth.nasa.gov/archive/air_pressure/

Week # 5 Q.4 (4/24&25)

Homework:Progress reports Friday

Activities/Assignments: Complete Student

worksheet-atmosphere Graphing activity of

atmospheric layers Atmosphere history Video – atmosphere+

handout

Today in I.S.…I.S. Learning Goal:I can analyze the factors used to explain structure and function of the various layers of the Earth

Warm Up: + reflection Do you think the atmosphere has changed through Earths 4.6 billion years? Explain.

Fact: How did life evolve on Earth during the Archean, when the Sun was about 25% weaker than today? The Earth should have been glaciated, if greenhouse gas concentration was the same as today. Researchers studying the isotopic signatures of Earth's early atmosphere in rocks from Northern Australia have ruled out high levels of nitrogen as a possible way to increase warming from atmospheric carbon dioxide.

http://www.youtube.com/watch?v=dz4fgG9ZCIc

Table of Contents for Quarter 4 ISPage

Number Assignment1 Table of Contents2 Review of Space: How Big? How Far? How Old?3 Exploring Space Video handout4 Notes Life Cycle of Stars and Acrostic Poem5 Doppler Effect Notes6 Electromagnetic Spectrum ½ sheet7 Wavestown Handout8 Into the Universe with Stephen Hawking: story of

everything9 The Planets overview

10 Bill Nye: Earth Science11 Earth Atmosphere Reading + Worksheet12 Layers of the Atmosphere + Graphing Activity13 History of Earths Atmosphere notes

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What is the Atmosphere?Atmosphere – Very thin envelope of gases that surrounds Earth

– Used by living organisms for chemical compounds/nutrients (I.e., O2, CO2, H2O, N2)

– Has no outer boundary, just fades into space

Page 13

Past & Present Composition of Earth’s Atmosphere

The composition of the Earth’s atmosphere has changed since the formation of the Earth.

How old is the Earth according to the Nebular Hypothesis?Earth has had approximately 3 different atmospheres over the course of 4 billion years.

What gases made up Earth’s original atmosphere?1. Earth’s First AtmosphereThe Earth’s first atmosphere was mainly helium (He) & hydrogen (H).

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DRAW

Past & Present Composition of Earth’s

Atmosphere2. Earth’s Second Atmosphere

Volcanic emissions later added carbon dioxide CO2, nitrogen N, water H2O , sulfur dioxide SO2 & other elements.

No free O2 at this time

Large amounts of carbon dioxide (CO2) from volcanoes caused the Earth’s past climate to be warmer than today’s.

Without carbon dioxide, no life could be present on Earth.

Ocean formation occurs due to presence of H2O in atmosphere

Draw

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Past Atmospheric CompositionEarth and the Early Atmosphere | Big History Project

http://www.youtube.com/watch?v=Gyn754vw8ZQ

Past & Present Composition of

Earth’s Atmosphere3. Today’s Atmosphere– Nitrogen (N2)-

78%– Oxygen (O2)- 21%– Argon (Ar) –

0.9%– Carbon Dioxide

(CO2) - 0.03%– Other

miscellaneous gases (I.e., H2O).

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(Today’s) Atmosphere• Today’s atmosphere is

mainly Nitrogen (N2) & Oxygen (O2 & O3).

– Where did the Oxygen (O2 & O3) come from?• As plant life “blossomed” on

Earth, so did the amount of O2 & O3

because oxygen is a byproduct of photosynthesis.

• Photosynthesis: process by which plants make their own food in the form of sugars.

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• Today’s atmosphere is mainly Nitrogen (N2) & Oxygen (O2 & O3).

– Why such an increase in Nitrogen? • N2 is a byproduct of life

(decomposition, feces, cell make-up), so the more life on Earth, the more Nitrogen entering the atmosphere!

(Today’s) Atmosphere Page13

• Today’s atmosphere is mainly Nitrogen (N2) & Oxygen (O2 & O3).

– Why is there more Oxygen compared to Carbon dioxide (CO2)?• The amount of plant life far

exceeds the amount of animal life on Earth, therefore photosynthesis creates much more oxygen than respiration (process that animals do to breath) creates CO2.

(Today’s) Atmosphere Page13

Atmosphere Origins of the Atmosphere http://channel.nationalgeographic.com/channel/videos/origins-of-the-atmosphere/