lowest layer of the atmosphere (Earth’s surface to 4 miles (at the poles) to

11-12 miles (at the equator) It is the layer where weather occurs.

(a)  

layer above the troposphere. It extends from 4-12 miles above the Earth’s

surface to around 31 miles. It holds very little water vapor and location of the bottom of

this layer is readily seen by the anvil-shaped tops of cumulonimbus clouds.

(a)  

layer extends from around 31 miles above the Earth's surface to 53 miles.

Gases that comprise this layer continue to become denser as one descends. Gases in

the mesosphere are thick enough to slow down meteors hurtling into the atmosphere,

where they burn up, leaving fiery trails in the night sky

(a)  

known as the upper atmosphere; located between 53 miles and 375

miles. This layer is extremely thin, and the gases in this layer become increasingly

denser as one descends to Earth. Ultraviolet and x-ray radiation from the sun begins to

be absorbed by molecules resulting in a significant increase in temperature

(a)  

the outermost layer extending from 375 miles to 6,200 miles above the

earth. Atoms and molecules escape into space and satellites orbit the earth.

(a)  

the manner in which something is composed.

(a)  

degree of hotness or coldness measured on a definite scale

(a)  

is the mass of the object compared to its volume.

(a)  

the amount matter in an object

(a)  

measurement of how much space an object takes up

(a)  

the force exerted by an air column above a surface as gravity pulls it down.

(a)  

the height of an object above sea level

(a)  

the boundary between the thermosphere and the exosphere

(a)  

coldest part of the Earth’s atmosphere where the mesosphere and the

thermosphere meet

(a)  

the boundary between the stratosphere and the mesosphere where the

temperature of the stratosphere reaches its maximum

(a)  

the boundary between troposphere and the stratosphere

(a)  

continuous movement of water between the Earth and the atmosphere.

(a)  

the process by which plants release water vapor into the atmosphere

through their leaves.

(a)  

In a water cycle, it happens when liquid water from bodies of water heated

by the sun turns into water vapor and rises into the atmosphere.

(a)  

In a water cycle, as the water vapor rises, it cools and condenses into tiny

water droplets, forming clouds

(a)  

In a water cycle, when the water droplets in clouds become too heavy, they

fall back to the Earth as rain, snow, sleet, or hail.

(a)  

rainwater that falls on land may flow over the surface into rivers and streams.

(a)  

some rainwater seeps into ground, becoming groundwater.

(a)  

water that exists underground

(a)  

the force that pulls objects with mass toward each other.

(a)  

is composed of two hydrogen atoms, each linked by a single chemical

bond to an oxygen atom.

(a)  

is a measure of the water vapor content of air.

(a)  

the temperature at which air is saturated with water vapor, and water begins

to condense into a dew or frost.

(a)  

a large body of air with uniform temperature and humidity.

(a)  

warm and dry air masses that form over the southwestern US and

Mexico

(a)  

cold and moist air masses that form over cold ocean water in polar

regions

(a)  

warm and moist air masses that form over the warm waters of the

tropics and the gulf stream

(a)  

has higher pressure at its center than the areas around it.

(a)  

has lower air pressure at its center than areas around it.

(a)  

forms when a cold air mass runs into a warm air mass.

(a)  

forms when a fast-moving warm air mass overtakes a slower-moving cold air

mass.

(a)  

sometimes cold and warm air masses meet, but neither one can move

the other.

(a)  

sometimes a warm air mass gets caught between two cold air masses.

(a)  

low-level layers of clouds with a fairly uniform grey or white colour.

(a)  

are puffy, white, or gray clouds with flat bases that look like cotton balls.

(a)  

are short, detached, hair-like clouds found at high altitudes.

(a)  

cold and dry air masses that form over large land masses

(a)  

also known as thunderclouds, are dense, dark clouds that tower

into the sky.

(a)  

the boundary where the air masses meet

(a)  

the rate at which air is moving horizontally past a given point.

(a)  

the direction from which the wind is blowing.

(a)  

the temperature of the air surrounding an individual

(a)  

is a measure of water vapor in the air.

(a)  

a map showing the state of the weather over a large area

(a)  

a line on a map connecting points having the same atmospheric pressure at a

given time.

(a)  

an artificial body placed in orbit around the earth or moon or another planet in

order to collect information or for communication

(a)  

a device that sends out radio waves for detecting and locating an object by the

reflection of the radio waves.

(a)  

the process of heat transfer through moving air or liquid.

(a)  

is a band of strong winds that blows from west to east.

(a)  

because the Earth rotates on its axis, circulating air is deflected toward

the right in the Northern Hemisphere and toward the left in the Southern Hemisphere.

(a)  

local wind system characterized by a flow from land to water late at night.

(a)  

is when air moves from an ocean or sea onto nearby land.

(a)  

is a warm and swift Atlantic Ocean current that follows the eastern coastline

of the US and Canada before crossing the Atlantic OCean towards Europe.

(a)  

the force that occurs when there is a difference in pressure

between two areas

(a)  

the average weather conditions for a particular location over a long period of

time

(a)  

describes the current state of our atmosphere in a specific place.

(a)  

winds that blow from east

(a)  

winds that blow from west to east in the middle latitudes of the Earth.

(a)  

also known as Intertropical Convergence Zone (ITCZ), a weather pattern near

the equator with little or no wind

(a)  

powerful winds that blow from east to west near the equator

(a)  

real name of your 7th grade science teacher

(a)