Rivers part 3 - Delta, meanders, positive and negative impacts

Important - to know the positive and negative impacts of how rivers affect us.

River 3 delta meander impacts from estee seetoh

NASA: The Water Cycle [720p]

Difference between hurricane and tornado

Hurricanes:

A hurricane (also known as a cyclone or typhoon) is a very large,swirling storm with strong winds and heavy rains

• Form only over warm ocean water.
• Last for days and sometimes well over a week.
• Produce rain and flooding in addition to powerful winds.
• Are independent, self-sustaining storm systems.
• Have winds ranging from 74 to about 200 mph

Tornadoes

A tornado is a swirling column of wind that moves across the ground in a relatively narrow path, and it extends from a cloud to the ground

• Usually form over land
• Usually last minutes, rarely a few hours
• Cause damage via wind and debris
• Are dependent on a large storm to develop and keep going
• Have winds ranging from 65 to about 300 mph

Annoucements

21st Aug Wednesday - There will be a relief teacher for both 206 and 207 as i am on course. You will be given a class quiz on weather and climate. CLOSED book quiz. 26 Aug Mon - Both 206 and 207 will have their Class Test(CA4). The topic is on weather and climate. -Describe the differences between Weather and Climate. -Different Weather Elements -Temperature, Rainfall and Wind Understand why and how the weather instruments are used. -Major Climates of the World : Tropical, Temperate and Polar -Climograph : Compare and contrast the different climates using the data provided. -Impact of Weather and Climate on people: How does weather and climate affect people positively and negatively.

Rivers vids

Delta Waterfall Floodplain

Questions and Answers

whitney: Cher, I would like to check, abt how many Six's thermometer are suppose to have in a stevenson Screen? 5 Aug 13, 08:34 PM whitney: plus the metal indices 5 Aug 13, 08:32 PM whitney: cher, the slide 7, how does the thermometer work, with mercury and alcohol(as in how does it work)??

MISS ST: There is no fixed number of thermometers to be placed inside. It depends on how big the screen is, and how many you want to put inside. The mercury-in-glass thermometer consists of a bulb containing mercury attached to a glass tube. The volume of mercury in the tube is much less than the volume in the bulb. The volume of mercury changes slightly with temperature; the small change in volume drives the narrow mercury column up the tube.

5 Aug 13, 08:16 PM whitney: Cher, what is the meaning of atmosphere?
MISS ST: Atmoshpere is the layer of gases that surrounds the Earth eg Oxygen.

How wind is formed

http://youtu.be/7OZPYghKCyc