Hello! BELL Work (3 min.) Set up today’s pages – Copy these questions under the IN to answer during a video clip: Intro to Greenhouse effectIntro to Greenhouse effect 1.List two possible outcomes of rising global temperatures. 2.What simple changes can we make? **Attach your quiz and update your grade log Then, Get your book from the back cabinet.

Explain how the atmosphere protects life on Earth using the greenhouse effect. Describe the possible effects of increased temperatures on Earth caused by trapping of “greenhouse gases.” Level 4 I can compare and contrast the four major layers of the atmosphere (troposphere, stratosphere, mesosphere, and thermosphere) in terms of temperature and pressure and explain how they contribute to life on Earth. Level 3 I can list the four layers of the atmosphere, explain how temperature and pressure change in each layer, and describe how it protects life and insulates our planet. Level 2 I can list the layers of the atmosphere and how they protect life on our planet. Level 1With help I can explain how the atmosphere protects our planet.

Let’s discuss Intro to Greenhouse effect 1.List two possible outcomes of rising global temperatures. 2.What simple changes can we make?

Quick Review – yesterday’s THROUGH It protects us from Sun’s harmful radiation and maintains “just right” temperature range. We must have the right temperature to have liquid water. It is held in place by gravity. The measure of the force with which air molecules push on an area of a surface. Air pressure decreases with increasing altitude. There are fewer molecules of air so the amount of Oxygen is less. Uppermost layer where gases absorb high energy solar radiation. (X-rays, Gamma rays) decreases increases Middle layer and one of coldest. Meteoroids burn up at the bottom. decreases Ozone absorbs UV radiation. decreases increases Densest layer that contains all water vapor, clouds, weather, pollution. decreases Tape this to Through p. 15

Let’s read – turn to p. 572

Quick Video – Cartoon version of global warmingCartoon version of global warming

Complete Lesson Review on p.575 and attach to “THROUGH” page 17 in notebook.

atmosphere Air pressure Greenhouse effect Nitrogen (78%), Oxygen (21%), carbon dioxide (< 1%) stratosphere No Ozone = no life Due to no protection from the sun No, gases absorbing solar radiation cause temperatures to increase or decrease. It’s like adding a thicker blanket which would trap more heat.

Troposphere (our layer) Highest pressure on surface because of gravity and total mass of gases above. Pressure decreases as you go upwards. Thermosphere It feels cold because the density of particles that transfer energy is very small (Very low pressure) X -30 ° C About 35 degrees

Level 4 I can compare and contrast the four major layers of the atmosphere (troposphere, stratosphere, mesosphere, and thermosphere) in terms of temperature and pressure and explain how they contribute to life on Earth. Level 3 I can list the four layers of the atmosphere, explain how temperature and pressure change in each layer, and describe how it protects life and insulates our planet. Level 2 I can list the layers of the atmosphere and how they protect life on our planet. Level 1With help I can explain how the atmosphere protects our planet. Greenhouse Venus? Why is Venus the hottest planet in our Solar system even though it’s not the closest to the Sun?

 Deadly space weather - Venus Deadly space weather - Venus

Level 4 I can compare and contrast the four major layers of the atmosphere (troposphere, stratosphere, mesosphere, and thermosphere) in terms of temperature and pressure and explain how they contribute to life on Earth.

Level 3 I can list the four layers of the atmosphere, explain how temperature and pressure change in each layer, and describe how it protects life and insulates our planet.

Level 2 I can list the layers of the atmosphere and how they protect life on our planet.

Level 1 With help I can explain how the atmosphere protects our planet.