# MET 1010: Chapter Two

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Intro to Atmosphere

Kirchhoff's law.

larger than

### A red shirt:

selectively scatters red wavelengths of visible light and absorbs the rest.

### According to Wein's displacement law, the wavelength at which maximum radiation occurs is:

inversely proportional to the temperature.

decrease

### Charged particles from the sun that travel through space at high speeds are called,

plasma, or solar winds/flares.

absorb, reflect

visible light.

kinetic energy.

cooling

### Heat is energy in the process of being transferred from:

one object to another because of the difference in temperature between them.

### How do red light and blue light differ?

Red wavelengths are much longer than blue wavelengths.

None.

### If the amount of energy lost by the earth to space each year were not approximately equal to that received,

the average surface temperature would change.

decrease.

### If the average surface temperature were to increase, the amount of radiation emitted from the earth's surface would ______, and the wavelength of peak emission would shift toward ______ wavelengths.

increase, shorter

### If the temperature of the air is said to be at absolute zero, one might conclude that:

the molecules contain a minimum amount of energy.

### If you want to keep an object cool while exposed to direct sunlight,

wrap it in aluminum foil with the shiny side facing outward.

an aurora.

50 percent.

expansion.

compression.

### Solar radiation reaches the earth's surface as:

visible light (but also ultraviolet light and infrared light).

### Sunlight passes through a thicker portion of the atmosphere at:

sunrise and sunset.

reflected

### Suppose you are outside in very cold temperatures, wearing a winter coat that is effective at keeping you warm. Which of the following is true?

The coat is the source of heat that keeps you warm, the coat prevents your body's heat from escaping to the surrounding

### The albedo of the earth's surface is only about 4 percent, yet the combined albedo of the earth and the atmosphere is about 30 percent. Which set of conditions BEST explains why?

High albedo of clouds, low albedo of water.

specific heat.

### The atmospheric greenhouse effect is produced mainly by the:

absorption and re-emission of infrared radiation by the atmosphere.

### The blueness of the sky is mainly due to:

the scattering of shorter wavelengths of sunlight by air molecules.

sublimation.

latent heat.

### The earth emits radiation with the greatest intensity at:

infrared wavelengths.

longwave, shortwave

### The earth's radiative equilibrium temperature is:

the temperature at which the earth is absorbing solar radiation and emitting infrared radiation at equal rates.

latent heat.

### The major process that warms the lower atmosphere is:

the earth's radiation of infrared energy.

### The processes of condensation and freezing:

both release sensible heat into the environment.

### The proper order from shortest to longest wavelengths is:

ultraviolet, visible light, infrared.

### The sun emits a maximum amount of radiation at wavelengths near ______, while the the earth emits maximum radiation near wavelengths of ______.

0.5 micrometers (visible light), 10 micrometers (infrared)

### The sun emits it greatest intensity of radiation in:

the visible region of the spectrum.

### The temperature of a rising parcel:

cools as its molecules expand in less dense air.

### The term "latent" means:

hidden, or stored.

conduction.

### What is released as sensible heat during the formation of clouds?

Latent heat of condensation.

evaporation.

Temperature.

Still air.

Temperature.

### Without the atmospheric greenhouse effect, the average surface temperature would be:

lower than at present.

Example: