1. Science Chapter 6B Lesson 4

2. Climate Weather: – Usual – Year after year

3. Recall: Weather – Temperature – Air pressure – Water Ocean currents move – Warm water to cold lands – Cold water to warm lands Water heats more slowly than land!

4. Meteorologists Scientist that studies weather Thermometer – Measures air temperature

5. Measuring Air Pressure Barometer – Measures air pressure Higher reading – Higher pressure » Dry and clear weather Lower reading – Lower pressure » Damp and cloudy weather

6. Taking Measurements Anemometer – Measures wind speed Wind vane – Shows direction wind is blowing Rain gauge – Measures rain fall Hygrometer – Measures humidity

7. Predicting Weather Forecast – A prediction of weather – Using: Temperature, precipitation, air pressure and wind To predict Use computer models: Weather radar – Tracks precipitation

8. Tracking Weather Recording measurements on: – Charts – Maps From information on: – weather satellites – radar

9. Earth’s Climate Both warm and cold periods – Alternating periods of warm and cold Scientists study past – Drill into ice – Examine Earth’s crust – Study rings on trees

10. In the Future In the right amounts: – Carbon dioxide and water vapor – Keep Earth warm Too much Make Earth too warm – Ice melts – Flooding – Climate changes