climate patterns and processes
DESCRIPTION
Year 12 - Natural landscapes - introTRANSCRIPT
Wed 27th Feb
DO NOW:
1. Name 3 aspects of climateTemperature, rainfall, sunshine, wind, seasons,
humidity, weather, droughts, hurricanes, monsoons
Level 2 Geography
Skills – pg48
Due: Friday 29th Feb
No essay practice this week.
Homework for Week 5:
Learning Intention:
To be able to describe different climatic processes
Climatic Patterns and Processes
Climate… look at an atlas
Climatic Processes: heating of the earth
The sun heats the earth- Temperatures are warmer at the equator where the sun’s rays are more concentrated.How could the sun affect natural landscapes?
• Latitude: Generally the closer to the Equator the warmer the temperature. This is because light at the Equator hits at less of an angle than at the poles. Northland at 36°S has an average temp of 14°C, whereas at Tongariro at 39°S has an average temp of 7°C.
• Altitude: Saturated air cools at the rate of 0.6°C per 100 vertical metres.
• Relief: This can cause orographic rain (Rangipo Desert) and cause wind funnelling (e.g. Cook Strait).
Climate Controls copy
Climatic Processes: Aeolian ProcessesWind – occurs through the heating and
cooling of air. Air rises because it’s warm, then cools and falls. (convection current)
• How do you think wind could affect natural landscapes?
- Erosion (when something is warn away)
- Deposition – when particles are deposited somewhere)
Climatic Processes: Precipitation
Rain…Snow…Hail…Drizzle…
• How do you think precipitation could affect natural landscapes?
Erosion – rainfall wears away soils and rocks
Helps grow vegetationCreates flooding which erodes,
transports and deposits soil particles.
Precipitation: draw a simplified version
evaporation
Water condenses
Rainfall
This enters the rivers, glaciers, streams, lakes, ground water, oceans to complete the system
Simplified water cycle
Types of Rainfall: Orographic
Moist air forced to rise
Rain shadow on leeward side
Air warms as it descends
Air cools as it rises
Rain Dry
•Where could orographic rainfall occur in NZ?- West side of the mountain ranges•Where would the rain shadows be?- Eastern side of the mountain ranges•What does leeward mean?lee – shelterd areaLeeward – the sheltered side of something. Eg the Desert Road is the sheltered (leeward) side of Mt Ruapehu.
Write generalisations to answer these questions
Warm Surface
Warm moist air rising
Altitude
Convectional Rainfall
Types of Rainfall: Convectional
Types of Rainfall: Frontal – cold front
Narrow bank of heavy rain
Cumulus
Cumulonimbus
Squalls
Cold air (denser)
Warm air (less dense)
Frontal surface
Types of Rainfall: Frontal – warm front
Drizzle
Warmer air nimbostratus
Frontal surface
Wide band of heavy rain
Cooler air (denser)
Vegetation:Complete a word square for TUSSOCK
TUSSOCK Write the word in a sentence.
Write your own definition of the word.
Draw a picture of the word.
Vegetation:Complete a word square for Beech Forest
Vegetation:Complete a word square for Lichens
Tell the person beside you how orographic rainfall
occurs.
Reflection• Have you achieved today’s Learning
Intention?
• Write down any questions that you have from today’s lesson.
• In your groups, work out the question you can’t answer.
Learning Intention:
To be able to describe different climatic processes
• ?Answer:
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