SCIENCE 8 TOPIC 8a. HOW IS THE ATMOSPHERE PRIMARILY HEATED?

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Presentation transcript:

SCIENCE 8 TOPIC 8a

HOW IS THE ATMOSPHERE PRIMARILY HEATED?

Reradiated solar energy given off of the earth’s surface

WHAT ARE SOME MINOR SOURCES OF HEAT FOR THE EARTH?

Combustion (burning things)

WHAT ARE SOME MINOR SOURCES OF HEAT FOR THE EARTH? Combustion (burning things) Oxidation (changing food to energy)

WHAT ARE SOME MINOR SOURCES OF HEAT FOR THE EARTH? Combustion (burning things) Oxidation (changing food to energy) Winds (friction against objects

WHAT ARE SOME MINOR SOURCES OF HEAT FOR THE EARTH? Combustion (burning things) Oxidation (changing food to energy) Winds (friction against objects Volcanoes (erupting hot gases)

WHAT IS THE DEFINITION TO EVAPORATION

When liquid water turns to water vapor below the boiling point

WHAT IS THE DEFINITION TO TRANSPIRATION? When living plants transfer liquid water to the atmosphere as water vapor

WHY ARE THE OCEANS PRIMARY SOURCES OF MOISTURE FOR THE EARTH’S ATMOSPHERE? Their great surface areas for evaporation

WHAT FACTORS EFFECT EVAPORATION AND TRANSPIRATION?

Amount of energy present

WHAT FACTORS EFFECT EVAPORATION AND TRANSPIRATION? Amount of energy present Amount of surface area

WHAT FACTORS EFFECT EVAPORATION AND TRANSPIRATION? Amount of energy present Amount of surface area Moisture content of the air

WHY IS HEAT LOST IN THE PROCESS OF EVAPORATION? Heat is lost in the process of evaporation because the molecules of water vapor that break away from the liquid state take with them a great amount of heat (kinetic) energy

WHY IS HEAT LOST IN THE PROCESS OF EVAPORATION?

WHAT IS SATURATION VAPOR PRESSURE?

Well, first you need to know what vapor pressure is… It’s the part of the total air pressure attributed to the weight of the water vapor only

WHAT IS SATURATION VAPOR PRESSURE? Then you need to know what saturation is… Or…the rate of evaporation and the rate of condensation is in a dynamic equilibrium

DRAWING AND EXPLAINING HOW AIR CIRCULATES IN THE ATMOSPHERE