Prin. Of Science- Test 1

Front 1

3 main gases in atmosphere in order of abundance

Back 1

Nitrogen, oxygen, and argon

Front 2

3 additional constituents of atmosphere (question 1)

Back 2

Water vapor, carbon dioxide, and other inert gases

Front 3

Only first step of Nitrogen cycle (question 2)

Back 3

Bacteria in the soil remove Nitrogen from the atmosphere to be used for plant growth

Front 4

Only second step of oxygen cycle (3)

Back 4

Oxygen is returned to the atmosphere by green plants as a result of photosynthesis

Front 5

What inert gas exists due to radioactive decay (4)

Back 5

Argon

Front 6

def. of water vapor and how it exists in atmosphere (question 5)

Back 6

Water vapor is the invisible, molecular form of water in its gaseous state.

Water vapor rises into the atmosphere through the process of evaporation and returns to earth as precipitation.

Front 7

relationship between density of atmos. and altitude (8)

Back 7

Atmosphere DECREASES in density as altitude INCREASES

Front 8

def of atmospheric pressure, pressure at sea level, how it's measured (9)

Back 8

It is the pressure exerted on the earth by the atmosphere. At sea level, atmospheric pressure measures 14.7 lbs/inT^2. Atmospheric pressure is measured with a barometer.

Front 9

first step only of how sun warms earth's surface, and greenhouse effect (11)

Back 9

Soil, water, and rock absorb sunlight and emit the energy as infrared radiation

Front 10

relationship between altitude and temperature (12)

Back 10

As temperature DECREASES, altitude INCREASES

Front 11

parts of atmosphere and everything about ozone (13)

Back 11

Troposphere- layer from the earth’s surface up to where temperature stops getting colder with height. This is where weather occurs due to colder air ontop. It’s an unstable configuration.

Stratosphere- (Stratified means layers) warm air ontop and cold air on the bottom. This is very stable. It has no weather. The ozone is in the stratosphere.

Exosphere- outermost layer of the atmosphere where molecules merge with outer space.

OZONE- Triatomic oxygen (O^3) in the stratosphere and protects us from the sun (UV radiation). UV radiation in high doses can cause skin cancer, mutations (abnormal cell growth) and destroy DNA.

Causes of loss of ozone- CFC’s, found in propellants, Styrofoam, and Freon.

Front 12

Def. of wind (14)

Back 12

Horizontal movement between hot and cold air. Wind direction is given by the direction from which it originates.

Front 13

All parts of question 15

Back 13

Temp. air Density Direction Expands/Contracts Atm. Pressure
Warm less rises expands lower (less)
Cool more sinks contracts higher (more)

Front 14

Air moves from an area of _____ pressure to an area of _____ pressure (16)

Back 14

High, Low

Front 15

Only one reason why soil heats faster than water (17)

Back 15

Water is cooled by evaporation and soil is not

Front 16

def. of sea breeze and mountain breeze

Back 16

Sea breeze- when air over land warms faster than air over water and rises. Cool, denser air over water rolls inward

Mountain breeze- air over a mountain slope gets more sunlight than the valley floor, so it heats/rises. Cooler, denser air from the valley blows up the slope.