Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
24 Cards in this Set
- Front
- Back
|
air pressure
|
the result of weight of a column of air pushing down on an area
|
|
|
atmosphere
|
the layer of gases that surrounds the planet that make conditions on Earth suitable for living things.
|
|
|
altitude
|
Elevation especially above sea level or above the earth's surface.
|
|
|
mass
|
the measure of how much matter an object contains
|
|
|
density
|
a physical property that relates the mass and volume of an object or material.
|
|
|
temperature
|
the average amount of energy of motion of each molecule of a substance. A measure of how hot or cold a substance is.
|
|
|
humidity
|
a measure of the amount of water vapor in the air.
|
|
|
weather
|
the condition of Earth’s atmosphere at a particular time and place
|
|
|
aurora
|
rippling sheets of light in the sky caused when solar wind (electrically charged particles normally blocked by the atmosphere and magnetic field) enter Earth’s atmosphere, where they hit gas molecules that cause them to glow. Occur near the North and South Poles.
|
|
|
ozone
|
A form of oxygen that has three oxygen atoms in each molecule instead of the usual two. A layer in the atmosphere which blocks many of the sun's ultraviolet rays from reaching the earth.
|
|
|
clouds
|
Formed when water vapor in the air becomes liquid water or ice crystals
|
|
|
cumulus
|
Clouds that look like fluffy, rounded piles of cotton
|
|
|
stratus
|
Clouds that form in flat layers
|
|
|
cirrus
|
A wispy white cloud (usually of fine ice crystals) at a high altitude (4 to 8 miles).
|
|
|
mesosphere
|
The layer of the atmosphere that occupies the space from 50 km – 80 km. It is the coldest layer at -90°C. Meteorites burn up in this layer.
|
|
|
troposphere
|
The layer of the atmosphere in which we live and most weather occurs.
|
|
|
thermosphere
|
It extends from 80 km up into space. It is the hottest layer at 1,800°C
|
|
|
stratosphere
|
Occupies the space from12 km – 50 km above Earth. Planes fly in this layer because it is above most weather and is more stable than the layer below.
|
|
|
exosphere
|
It extends from 550 km up into space. It is where satellites orbit the Earth.
|
|
|
warm front
|
occurs when a moving warm air mass collides with a slow moving cold air mass
|
|
|
cold front
|
occurs when a rapidly moving cold air mass runs into a slow moving warm air mass causing the denser cold air to slide under the lighter, warmer air. The warm air is pushed upward
|
|
|
stationary front
|
Occur when cold and warm air masses meet, but neither has the force to move the other causing a "standoff"
|
|
|
occluded front
|
Occurs when a warm air mass is caught between two cooler air masses.
|
|
|
wind
|
the horizontal movement of air from an area of high pressure to an area of lower pressure
|
