Weather Tools
measures the temperature of the air and tells how hot or cold it is
Thermometer
Air masses that are associated with fair weather, such as clear skies and light winds.
HIGH PRESSURE
What starts as ice crystals in clouds, then the atmosphere temperature is above freezing, As it falls to the ground, it melts into liquid droplets?
Rain
• Fluffy, white clouds with flat bottoms
• Usually indicate fair weather
Cumulus
• May develop in humid, warm conditions
• Usually produces heavy rain for 30-60 minutes
• Lightning comes before thunder
Thunderstorms
measures the amount of rain that has fallen since the last measurement
Rain Gauge
Air masses that are associated with rainy or stormy weather and strong winds.
LOW PRESSURE
What starts as rain, but as the liquid droplets fall, they pass through a layer of very cold air, then the droplets cool below the freezing point but stay liquid, and When the droplets hit the frozen ground, they freeze?
Freezing Rain
• Feathery, wispy clouds
• Indicate fair weather now but often mean that rain or snow will fall within several hours
Cirrus
• Funnel shaped columns of air that form from thunderstorms when wind changes direction and gains strength from the height
• Air begins to rotate and turns vertical
Tornadoes
measures wind speed and direction
Anemometer
Air pressure is due to the pull of _____ on the atmosphere at a particular place on Earth.
Gravity
What starts out as ice crystals in clouds, then snowflakes fall through a small layer of air that is just above freezing, so they partially melt, and they enter a layer of freezing air and refreeze before hitting the ground?
Sleet
• Smooth, gray clouds that block sunlight and cover the sky
• Often associated with light rain or drizzle
Stratus
• Huge slow-moving storms
• Occur over warm ocean water
• Have winds equal to or greater that 74 miles per hour
Hurricanes
measures the atmospheric pressure
Barometer
Air pressure is constantly changing due to these two things
Temperature and Wind
What starts as ice crystals in clouds, then snowflakes fall through freezing air and stay frozen all the way to the ground?
Snow
• Cumulus clouds that grow in height and darken on the bottom
• May produce thunderstorms
Cumulonimbus
What type of extreme weather is most likely to occur in summer and fall?
Hurricanes
This person uses weather data to forecast weather.
Meteorologist
What kind of weather is likely to happen if the air pressure drops?
Rainy, stormy weather
What is the biggest factor in determining if it will rain or snow?
Temperature
Which type of cloud most likely indicates a thunderstorm is approaching?
Cumulonimbus
Name the 2 types of extreme weather that are most likely to occur in spring and summer.
Thunderstorms and Tornadoes