Bell work 9/23/14

You are testing an unknown chemical. You add 1 mL of the unknown solution to a test tube and 1 mL of indicator solution. The solution turns bright purple.

Tell me if the substance is acidic or basic.Give the Independent and dependent variable.

Chapter 4 Ecosystems and Communities

4-1 THE ROLE OF CLIMATE

Objectives

• Identify the causes of climate.• Explain how Earth’s temperature

range is maintained.• Identify Earth’s three main climate

zones.

Vocabulary

•Weather•Climate•Greenhouse effect•Polar zone•Temperate zone•Tropical zone

What is climate?• Weather: day-to-day (d-d) conditions of Earth’s atmosphere

(atm) at a particular time and place.• Climate: average, year-after-year (yr-yr) conditions of

temperature (temp) and precipitation (precip) in a particular region.

Compare and contrast:Climate Weather

Precipitation

Temperature

Years

days

Gasses in the atmosphere• Nitrogen (N) =78%• Oxygen (O) = 20%• Carbon Dioxide (CO2)= 0.036%• Everything Else = 1.964%

How the Earth Stays Warm

•Carbon Dioxide (CO2), methane (CH4), water vapor (H20 g), and other atmospheric (atm’c) gasses trap heat energy and maintain Earth’s temperature (temp) range.•Known as greenhouse gasses.

Greenhouse effect

•Greenhouse effect: heat is naturally trapped by the layer of greenhouse gasses.

Climate differs by latitude• As a result of the differences of latitude and angle of heating,

Earth has 3 main climate zones: Polar, temperate, and tropical.

Climate Zones• Polar: cold, (sun) rays strike at low angle• Temperate: b/w polar and tropical; temp changes over course

of yr• Tropical: very warm and wet; nearly direct rays

Effects of Wind

Effects of Oceans

Effects of Landmasses

•Mountains cause moist air to rise• It cools, and condenses• Forms clouds: precip to mountains•Areas on far side of mountains dry

Wrap it up

• Greenhouse effect: traps gasses inside atm• The 3 zones are regions with drastic

temperature differences due to latitude.• 2 factors that determine climate:

temperature, moisture, transport of heat (by wind, water, and over land).

Activity• Lets Draw!• Concept Cartoon• Draw me a cartoon (2+ scenes) to answer the following:• How might the same species of animal vary (adapt) to different

regions?• Ex: Rabbit: polar: white

• Temperate: brownNot from around here are you?

Finish Up!

•Update your table of contents and turn in your notebooks!•Great work today!