To observe cloud types and cover. To observe changes in clouds over time. To compare cloud coverage with temperature.
What do you notice about clouds? 2. How long do you think clouds
last? 3. Are there different kinds of clouds? 4. Do some types of
clouds signify certain types of precipitation? 5. Do certain types of
clouds correlate with geographic area? 6. Are cloud type and temperature
related? 7. Are cloud types and humidity related?
Learning objectivesStudents learn how to categorize clouds and make estimates from observation. Students correlate cloud coverage with temperature and pressure.
4. Energy from the Sun heats Earth unevenly, causing air movements that result in changing weather patterns. As a basis for understanding this concept:
a. Students know uneven heating of Earth causes air movements (convection currents).
b. Students know the influence that the ocean has on the weather and the role that the water cycle plays in weather patterns.
c. Students know the causes and effects of different types of severe weather.
c. Students know heat from Earth’s interior reaches the surface primarily through
convection. d. Students know convection currents distribute heat in the atmosphere
Grades Nine through Twelfth
Climate is the long-term average of a region’s weather and depends on
camera, stopwatch, Cloud Table (See attachment), Cloud identification
chart (See references), thermometer, graph paper on a transparency.
Choose a day that predicts cloudy weather, usually right before it
rains has changing cloud conditions. Mark a spot on the pavement outside
to place a tripod and camera. Aim at the sky, but keep a landmark visible
in the picture for comparison purposes.
Take a picture at regular intervals, such as every 5 or 10 minutes. Be
sure to not change the zoom on the camera. Take between 12 - 20
pictures. Chart temperature and/or pressure along with time intervals.
Data and graph
Weather Graphs in Northridge,CA on November 11, 2011.
View Charts in attachments below.
Analysis & Conclusions
Cloud type and percentage of coverage changed quickly, within a matter of minutes. Clouds changed quickly from 12 noon to 2pm as the barometer dropped from 29.88 to 29.82, as rain neared. Cloud coverage did increase to 100% as the barometric pressure did drop. Wind increased from 5 mph to 14 mph and the direction moved from SW to more S.
Photos & Movies
Cloud Powerpoint presentation