thick layer of air around our world
What is the changing of our atmosphere (hot/cold; wet/dry)?
What causes weather?
Where does only weather happen?
Where is there no weather?
Example of a dry climate:
Example of a wet climate
how hot or cold something is
Where does Earth get its heat?
Two things that soak up heat
What soaks up heat quickly?
What happens when warm air rises and meets cold air comes down to fill up the gaps the warm air left?
soaks up and gives off heat quickly
warm and give off heat slowly
object used to measure or read temperature
pushing against you
What is air doing all the time?
you have it inside you too
Why don't people feel the air pushing against them?
What is air made of?
What temperature causes low pressure?
good weather/sunny day
What weather does a "high pressure" bring?
bad weather/stormy day
What weather does a "low pressure" bring?
fluffy, white clouds; called fair weater clouds
lowest cloud you can walk through
highest cloud in the sky (8-10 miles); looks like wisps of smoke
whole sky is covered in a blanket of gray clouds; if they are low, there will be drizzle
very dark cloud, any shape, lots and lots of rain
billions of drops of water
What are clouds made of?
when drops of water grow big and heavy in clouds
When does it rain?
any type of weather (cold or hot)
When can evaporation happen?
sun heats water on Earth, and it changes to vapor
frozen water vapor
billions of flakes of frozen water vapor
What are snow clouds made of?
pieces of ice that fall during thunderstorms
raindrop in a thundercloud
What does a hailstone start as?
When do hailstorms happen?
rain that passes through a cold layer of air, freezes, and lands on the ground as beads of ice
When does sleet happen?
when air changes from hot to cold or cold to hot
what causes wind?
air that comes from the north
air that comes from the west
What winds bring warm weather?
What winds bring cold weather?
What winds bring clouds?
What winds bring blue skies?
south & west
What two winds bring nice weather?
north & east
What two winds bring bad weather?
strong storm with winds over 75 miles per hour (Atlantic Ocean)
strong storms in the Pacific Ocean
funnel cloud with winds up to 300 miles per hour; it is the fastest wind
Another name for wind storms
water on the ground in the mornings that forms when the ground is cooled during the night
What wetness does not come from clouds?
water on the ground in the mornings that forms when the ground is freezing cold at night
water vapor in the air
Where does dew come from?
What happens when water vapor comes near something cold?
What does frost look like?
when the sky is clear
When do you see dew and frost?
How tall can a thundercloud be?
clouds blowing apart
What makes lightning?
What is lightning?
crashing together of hot air from lightning and cold air
What causes thunder?
light travels faster than sound
Why do we see lightning before we hear thunder?
*takes up space
*presses on things
Three properties of air:
people who study the weather and the atmosphere
*keeps us warm
*protects us from the sun's harmful rays
How does the atmosphere help Earth?
What absorbs harmful rays from the sun?
Weather takes place in the _____.
layer of air closest to Earth
weather along a cold front is ______.
an occurance that happens in the atmosphere at a certain place
Climate of Louisiana:
the average weather condition of a place over a period of time