Temperature Inversions

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Katina Peck 7th Grade Science

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Presentation transcript:

Temperature Inversions

Temperature Inversion

Air Molecules As you go higher in the atmosphere, air becomes less dense. The air molecules are spaced further apart 1

Air Molecule Density

Air Density That is why it is hard to breathe at high altitudes. That is also why it is colder at high altitudes

Molecule Density Verses Temperature Heat is from molecule collisions. Fewer molecules…… Fewer collisions…… Less heat! 2

Why Air Density Changes The weight of the air causes the at the ground to have high pressure. Gravity pulls the air close to the earth The high pressure pushes the air molecules close together 3

Air Molecule Density

Temperature vs Pressure As the pressure of a gas drops, it’s temperature also drops. Evidence Condensation on a Coleman lantern Warm soda cools when you open it.

Air Temperature vs Altitude SO, The higher you go. . . The less dense the air . . . The colder it gets!

Air Temperature

Smoke Rises in the Air, Normally

Why does the hot smoke rise? 4

What happens to the temperature of the hot smoke as is rises? 5

Temperature Inversion A temperature inversion is when a layer of warmer air covers the colder air at ground level. 6

Temperature Inversion It forms when the ground level air is kept cold by the cold ground. Then a warm air mass comes from another area and covers the cold air. The inversion acts like a lid over the cold ground level air 7-8

How it Happens

Smoke Stops Rising!

Why does the smoke stop rising? 9

All Over Town

The Air Gets Dirty!

Real Dirty!

Temperature Inversion

temperature inversions SO WHAT? How do temperature inversions affect us?

we can protect ourselves from the effects of temperature inversions? What Can We Do? What are some ways we can protect ourselves from the effects of temperature inversions?