10/8/13
31st Day of School
Learning Goal (7.E.1.3): I will be able to explain how the
difference in high- and low-pressure systems affect our
weather.
Due Today: Flashcards and Questions #4, 5 & 6 page A85.
Evening Assignment: Finish flashcards & questions #5 & 6
page A96.
Use Intellicast.com to
answer the following:
1) What type of pressure
system is over Kansas
City, MO?
2) What type of weather will
they have?
3) Why was this morning
cooler than yesterday
morning?
Do Now
Use Intellicast.com to
answer the following:
1) What type of pressure
system is over Kansas
City, MO? High Pressure
2) What type of weather will
they have? Sunny, calm
3) Why was this morning
cooler than yesterday
morning? Cold front
arrived yesterday
Do Now
4. Explain how air moves differently in low- and highpressure systems.
Knowledge Check
4. Explain how air moves differently in low- and highpressure systems.
Low-Pressure System
Air spirals around a lowpressure center.
Moves inward and up
Counter-clockwise
High-Pressure System
Air sinks into a highpressure center.
Spreads outward
Clock-wise
Knowledge Check
5. If the weather becomes stormy for a short time and
then becomes colder, which type of front has
passed?
Knowledge Check
5. If the weather becomes stormy for a short time and
then becomes colder, which type of front has
passed?
A cold front has passed which leaves cooler, dry air.
Knowledge Check
6. You check a barometer and observe that the air
pressure has been dropping all day. Is tonight’s
weather more likely to be calm or stormy?
Knowledge Check
6. You check a barometer and observe that the air
pressure has been dropping all day. Is tonight’s
weather more likely to be calm or stormy?
It is likely to be stormy. Decreasing pressure indicates
that a low-pressure system or front is approaching.
Both are associated with clouds and possible storms.
Knowledge Check
A thunderstorm is a storm with lightning and thunder.
Watch the animation to help you
visualize how thunderstorms
form.
http://www.canadiangeographic.ca/atlas/themes.aspx?id=weather&sub=weath
er_phenomena_thunderstorm
Thunderstorm formation
A lightning is an electrical discharged produce by
friction between air molecules moving in a
thunderstorm.
Watch the animation
to help you learn more
about lightning.
http://video.nationalgeographic.com/video/kids/forces-of-nature-kids/lightning-101-kids/
Lightning
A tornado is a violently rotating column of air stretching
from a cloud to the ground.
Watch the animation
to help you learn more
about tornadoes
http://video.nationalgeographic.com/video/kids/forces-of-nature-kids/tornadoes-101-kids/
Tornadoes
On the front of three cards write the following terms in
big, bold letters:
On the back side of the index card
• Thunderstorm
• Lightning
• Tornado
write in your own words the following
information about each one:
1. Description:
2. How it forms:
3. Effects and dangers:
http://t2.gstatic.com/images?q=tbn:ANd9GcSAiYiVODGAVdEYh8_sTLcTLdKVjieqyzhhwWO2mCi4MuJzx9AXA
Thunderstorm, Lightning, and Tornado
1)Finish flashcards for:
• Lightning
• Thunderstorm
• Tornado
2)Complete questions # 5 & 6 page A96.
Evening Assignment