Science Ch.11 Flashcards
Earth is surrounded by a blanket of air called_________.
atmosphere
The layer of atmosphere that is closest to Earth is called________.
troposphere
Most of Earth’s weather occurs in which layer of the atmosphere.
troposphere
________ is a gas that protects Earth from ultraviolet rays.
ozone
________ is the weight of the atmosphere pressing down on Earth.
air pressure
Most of Earth’s ozone is in which layer of the atmosphere?
stratosphere
Is cold air more dense than warm air or is warm air more dense than cold air.
cold air
Why does air in the atmosphere move?
…..because cool air and warm air don’t have the same density.
What causes wind?
Air moving from areas of high pressure to areas of low pressure.
What is local wind?
Two places having slightly a different temperature.
What is a sea breeze?
A wind that blows from the water to land at day time
What is a land breeze?
A wind that blows from the land to the sea at night time.
______ are global winds that always blows in the same direction.
prevailing winds
A process which water moves from Earth’s surface to the atmosphere and continues are repeated again and again.
Water Cycle
Liquid water changing into to a gas
Evaporation
Gas changes into liquid which forms together to be clouds
Condensation
Water in the ground
Groundwater
The amount of water in the air
Humidity
Water droplets fell to the ground in the process called______.
Precipitation
When snow on the melts it becomes water which flows down the mountain. This process is called _________.
spring melt
What are the 5 weather instrument, describes it.
Thermometer : temperature Hygrometer : humidity Barometer : air pressure Anemometer : wind speed Wind vane : wind direction
An _______ is a large body of air that has the same temperature and humidity.
Air mass
The border where two air mass is called ______.
Front
A_______ forms where a cold mass moves under a warm mass.
Cold front
A ________ forms where a warm mass moves over a cold mass.
Warm front
The pattern of a weather an area experiences over a long a time is called _______.
Climate
A________ can cause one side of a mountain to have a wet climate while the other have a dry climate.
Rain shadow
