Transcript www.panthercountry.org

Weather and Climate
Part 1
Day 1
Exciting slide huh?
Weather and Climate
Weather:
The condition of the atmosphere, or the air that
surrounds the Earth, at a certain place and time.
Weather @ BrainPop
Weather and Climate
Atmosphere:
The air that surrounds the Earth.
Atmosphere @ BrainPop
Weather and Climate
Troposphere:
The layer closest to the Earth.
The Layers
of the
Atmosphere
Weather and Climate
Temperature:
The measure of how hot or cold something is.
Temperature @ BrainPop
Weather and Climate
Humidity:
A measure of how much moisture is in the air.
Water Vapor:
Water in the form of a gas.
Humidity @ BrainPop
Weather and Climate
Q: How does the air feel on a hot humid day?
Why?
A: On a hot, humid day, the air feels damp and
sticky because it contains so much moisture.
Bonus Definitions:
Absolute Humidity:
How much water is actually in the air.
Relative Humidity:
The relative humidity tells how much water the air
is holding compared to how much it could hold at
a certain temperature.
Weather and Climate
Air Pressure:
The weight of the air around Earth pressing down
on Earth's surface.
How Does Air Pressure Cause Ear Popping?
“The main cause of air pressure-related ear popping is an
imbalance between the pressure within the ear and the
pressure outside of the ear. Anytime there is a huge disparity
between the two air pressures, the tympanic membrane, or
eardrum, expands or contracts in an effort to help equalize
the pressures. This contraction or expansion causes a
popping or crackling sound in the ears.”
From ehow.com
Weather and Climate
Q: Does cold or warm air have more air
pressure? Why?
A: Cold air tends to have higher air pressure than
warm air because it weighs more.
Have you ever heard that Warm Air rises?
Weather and Climate
Local Wind:
Affects weather in only a small region.
Weather and Climate
Sea Breeze:
Warmer air over the land is pushed up by cooler
air moving in from over the water.
Land Breeze:
Warmer air over the water is pushed up by cooler
air moving out from over the land.
Wind @ BrainPop
Weather and Climate
Prevailing Winds:
A pattern of moving air over large parts of Earth.
Bonus:
Prevailing Winds (global winds) are caused by
the uneven heating of large areas of Earth's
surface caused by Earth's rotation, or spin.
Prevailing Winds blow from the same general
direction.
In the United States winds called the Prevailing
Westerlies blow from west to east.
Weather and Climate
A: Sea breeze
B: Land breeze