Science (Weather) #1
Instrument that measures air pressure
What is a barometer?
Layer of the atmosphere closest to Earth
What is the troposphere
Does air pressure increase or decrease the higher it is in the atmosphere?
Decreases
When vapor comes into contact with lower (cooler) temperatures, the vapor is forced to change from gas state to liquid state. This process is called?
What is know as condensation.
A person who studies weather is known as a _______.
Meteorologist
Particles of air pressing down on Earth's surface
What is air pressure
Animals (and people!) release water vapor into the air every time they breathe out, or exhale.
This is known as respiration.
The energy of the sun causes the water molecules to speed up and collide more often. As the molecules collide, some of them "escape" and enter the surrounding air. What is this process called?
This process is called evaporation
As water vapor rises into the atmosphere, they mix up with very tiny particles of dust, soot, and salt, which are all particulate matter in the atmosphere. These particles are called aerosols. As the surrounding temperatures fall, the water vapor turns into very tiny particles of water and ice crystals. The water particles bump into the aerosols and stick together. As more and more water particles and aerosols stick together, what is formed.
Clouds
Relative humidity can be measured by using a a device made up of two thermometers, a wet-bulb thermometer and a dry-bulb thermometer. This device is called a __________.
psychrometer
The layer of air that surrounds our planet
What is the atmosphere
The layer of the atmosphere in which most weather occurs
What is the troposphere
The kind of front that forms when a warm air mass catches up with a cold air mass
What is a cold front
When water vapor condenses near ground level, it is called?
Dew
If the relative humidity is high, evaporation occurs ______ and the wet-bulb temperature does not change much.
A. Slowly
B. Rapidly
Slowly
Layer of air that contains ozone and is located above the troposphere
What is the stratosphere
The type of air mass that forms over land near the north pole
What is dry and cold
Water is always moving between the surface of Earth and the atmosphere. What is this process known as?
This process is known as the water cycle.
Humidity is a measure of the amount of water vapor in the air. The ability of air to hold water vapor depends on temperature. Which holds more water, cool air or warm air?
Warm Air
If the relative humidity is low, evaporation occurs _____ and the wet-bulb temperature drops by a large amount.
A. Slowly
B. Rapidly
Rapidly
The amount of moisture in the air
What is humidity
The type of air mass that forms over a body of water near the equator
What is moist and warm
Plants and animals also release water vapor into the air. In plants, water enters through the roots, rises to the leaves, and is released into the air as water vapor. This process is known as?
This is known as transpiration.
How much water is in the air compared to the temperature of the air is called?
Relative Humidity
If the temperature gets cold enough, the air gets to the point that it is holding the most water vapor it can hold. The relative humidity for this temperature would be 100 percent. This is also known as the ________.
dew point temperature.