1. Atmosphere Vocabulary 7 th Grade Earth Science

2. Directions Make 3 columns in your science notebook Title the columns WORD, DEFINITION, & SENTENCE Write the word in the heading Write the sentence in the 3 rd column Write the definition in the 2 nd column

3. Atmosphere Meteors often burn up in Earth’s atmosphere.

4. Atmosphere The mixture of gases that surrounds the Earth. The outermost layer of Earth.

5. Weather Today’s weather report states that it will be sunny.

6. Weather the condition of the Earth’s atmosphere at a particular time and place.

7. Ozone Scientists are worried that the Earth’s ozone layer is being depleted.

8. Ozone A form of oxygen that has 3 oxygen atoms in each molecule instead of 2.

9. Water Vapor The water vapor in the air is very heavy today.

10. Water Vapor the invisible gaseous form of water

11. Pollutants Cars put a lot of pollutants into the air.

12. Pollutants harmful substances in the air, water, and soil

13. Photochemical Smog The photochemical smog is really bad in Los Angeles.

14. Photochemical Smog a brownish haze that is a mixture of ozone & other chemicals, formed when the chemicals interact with sunlight.

15. Temperature Inversion Las Vegas often has a temperature inversion due to it’s topography.

16. Temperature Inversion weather condition where a layer of warm air prevents the rising air from escaping which traps the polluted air near the Earth’s surface.

17. Acid Rain Acid rain is responsible for the damage to marble statues.

18. Acid Rain rain that is more acidic than normal caused by the release of molecules of sulfur dioxide & nitrogen oxide in the air.

19. Pressure The pressure of air in a balloon makes it expand.

20. Pressure the amount of force pushing on a surface or area.

21. Air Pressure The air pressure is what helps planes to fly.

22. Air Pressure a force that is the result of the weight of a column of air pushing down on an area.

23. Altitude The city of Denver is at a high altitude.

24. Altitude elevation above sea level

25. Barometer A meteorologist uses a barometer to check for thunderstorms.

26. Barometer an instrument used to measure changes in air pressure.