Download File

Vocabulary
th
5
week
7th Grade Science
Elements of Weather
• Air Temperature
• Air Pressure
• Humidity
• Precipitation (Rain, snow, hail…)
• Cloud and fog
• Wind
Warm Up
•What are the steps of
water cycle?
Hint; Get your textbook
and open page 76.
Page 76
• Water Cycle ;
• Evaporation; occurs when liquid water changes
into water vapor(Gas)
• Condensation; occurs when water vapor cools
and changes to gas to a liquid.
• Precipitation; occur when rain, snow, sleet, or hail
fall from the clouds onto Earth’s surface.
• Run off; is the water, usually from precipitation,
that flows across land and collect in rivers,
streams and eventually the ocean
Page 77
Humidity; The amount of water
vapor in the air.
Relative Humidity; The ratio of the
amount of water vapor in the air to
the maximum amount of water
vapor the air can hold at a set of
temperature.
Page 79
• Condensation; the change
of state from a gas to a
liquid.
• Dew Point; is the
temperature at which a gas
condenses into a liquid.
Page 80
•Cloud; A cloud is a
collection of millions of
tiny water droplets or
ice crystals.
Page 80
• Cumulus Cloud; Puffy white cloud
that tend to have flat bottoms are
classed cumulus cloud.
• Thunderstorms come from a kind of
cumulus cloud called cumulonimbus
cloud.
Page 80
• Stratus Cloud; are clouds that
form in layers.
• Example; Nimbostratus cloud
dark stratus cloud that produce
raining.
• Fog is stratus cloud that formed
near the ground.
Page 81
• Cirrus Clouds; are made of ice
crystals and thin, feathery, white
cloud found in the high altitude.
• Cirro use for high altitude cloud
• Alto use for middle clouds
Page 82
• Precipitation; is water in solid, or liquid form,
that falls from the air to Earth.
• Rain, Sleet and Snow, and Hail.
Summary
• Water cycle describes the
movement of water above, on
and below Earth’s surface.
• Clouds form as air cools to its
dew point. Clouds are classified
by form and the by the altitude at
which they form.