‘Miles Apart, but close at heart’

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Presentation transcript:

‘Miles Apart, but close at heart’ A plughole in the UK A cyclone in Australia Can you explain this?

Plugholes and Hurricanes – really?!?

Key idea: Tropical storms (hurricanes, cyclones, typhoons) develop as a result of particular physical conditions. Global distribution of tropical storms Causes of tropical storms and the sequence of their formation and development The structure and features of a tropical storm How climate change might affect the distribution, frequency and intensity of tropical storms.

Causes of tropical storms and the sequence of their formation and development Up to 4: Name some conditions needed for tropical storms to form, begin to describe a basic sequence of events. 5/6: Describe and explain the conditions needed for a tropical storm and the sequence of events in their formation. 7+: Describe and explain in detail the conditions needed for tropical storms and the sequence of events involved in their formation. Be able to incorporate processes such as the Coriolis effect effectively into explanations.

Causes of tropical storms and the sequence of their formation and development

Put these events into the correct order to show the formation of a tropical storm

A. When the surface winds reach an average of 75 mph the storm officially becomes a tropical storm. B. The evaporated air cools as it rises and condenses to form towering thunderstorm clouds. C. On reaching land the tropical storm’s energy supply (warm evaporated water) is cut off. Friction with the land slows it down and the tropical storm begins to weaken. D. The tropical storm develops an eye at its centre where air descends rapidly. The outer edge of the eye is the eye wall where the most weather conditions of strong winds and heavy rain are felt. E. A strong upward movement of air draws water vapour up from the warm (27⁰C+) ocean surface. F. As the air condenses it releases heat which powers the storm and draws up more and more water from the ocean. G. As the tropical storm is carried across the ocean by the prevailing winds, it continues to gather strength. H. Several smaller thunderstorms join together to form a giant storm. The Earth’s rotation deflects the paths of the winds, which causes the storms to spin. The effect of the Earth’s rotation is called the Coriolis effect.

E. A strong upward movement of air draws water vapour up from the warm (27⁰C+) ocean surface. B. The evaporated air cools as it rises and condenses to form towering thunderstorm clouds. F. As the air condenses it releases heat which powers the storm and draws up more and more water from the ocean. H. Several smaller thunderstorms join together to form a giant storm. The Earth’s rotation deflects the paths of the winds, which causes the storms to spin. The effect of the Earth’s rotation is called the Coriolis effect. A. When the surface winds reach an average of 75 mph the storm officially becomes a tropical storm. D. The tropical storm develops an eye at its centre where air descends rapidly. The outer edge of the eye is the eye wall where the most weather conditions of strong winds and heavy rain are felt. G. As the tropical storm is carried across the ocean by the prevailing winds, it continues to gather strength. C. On reaching land the tropical storm’s energy supply (warm evaporated water) is cut off. Friction with the land slows it down and the tropical storm begins to weaken.

Most tropical storms for somewhere between 5⁰ and 20⁰ north and south of the equator Tropical storms in the northern hemisphere spin clockwise Tropical storms in the southern hemisphere spin anticlockwise Tropical storms are NOT found along the equator because there is not enough ‘spin’ from the Coriolis effect.

Select the most suitable caption from your work to match with each of the 4 stages of the diagram below B H A C

Then add a 5th stage to the diagram to show what would happen next. Select the most suitable caption from your work to match with each of the 4 stages of the diagram below B H A C Next Stage? Then add a 5th stage to the diagram to show what would happen next.

Causes of tropical storms and the sequence of their formation and development

Explain the formation of a tropical storm (4) L1 1-2 marks: Some valid points, lack sequence L2 3-4 marks: Valid points, sequence of events – cause and effect are clear.

Which text structures might we use for this work?

What are the key ingredients needed for a tropical storm? Plenary Recipe for Disaster What are the key ingredients needed for a tropical storm?

Key idea: Tropical storms (hurricanes, cyclones, typhoons) develop as a result of particular physical conditions. Global distribution of tropical storms Causes of tropical storms and the sequence of their formation and development The structure and features of a tropical storm How climate change might affect the distribution, frequency and intensity of tropical storms.