Presentation on theme: "HYDROSPHERE - INTRODUCTION"— Presentation transcript:
1 HYDROSPHERE - INTRODUCTION TODAY:What is the Hydrosphere?Likely exam questions.The Global Hydrological Cycle.
2 1. WHAT IS THE HYDROSPHERE? Earth’s surface waters.WHY DO WE LOOK AT THE HYDROSPHERE?Water is one of the most important resources on the planet.Unevenly distributed but crucial resource.Water also has the power to shape the landscape over long periods of time / shorter bursts of activity.Water is life-giving and life-threatening.
3 HYDROSPHERE Starting Point: Earth’s Water. Distribution of fresh and salt water.
4 Earth's Water and the Hydrologic Cycle To view this animation, click “View” and then “Slide Show” on the top navigation bar.
5 HYDROSPHERE 2. Likely exam questions: OS Map question or explanations of how river features are formed roughly every 2 yearsEvery 3/4 years questions about the Hydrological Cycle and River Flow data
6 3. THE GLOBAL HYDROLOGICAL CYCLE You should be able to:Draw a diagram highlighting the main elements of the cycleDescribe the global hydrological cycle as shown on a diagramExplain how the balance is maintained within the cycleYou may have come across the Global Hydrological Cycle inBiology
8 Earth's Water and the Hydrologic Cycle To view this animation, click “View” and then “Slide Show” on the top navigation bar.
9 THE GLOBAL HYDROLOGICAL CYCLE Describe the global Hydrological Cycle and explain how thebalance is maintained. You may use a diagram to support youranswer. (10 marks)
10 THE GLOBAL HYDROLOGICAL CYCLE ACTIVITY:Use Figure 3.2 on page 39 as a basis for your diagramThe ideal diagram should include the following labels:SOLAR ENERGY (HEAT FROM THE SUN)ICECAP STORAGEEVAPORATION (FROM OCEANS AND LAKES)TRANSPIRATION (FROM PLANTS AND TREES)THE SUM OF THESE TWO ARE KNOW AS EVAPOTRANSPIRATIONCONDENSATION (INTO CLOUDS)PRECIPITATIONSURFACE RUN-OFFINFILTRATIONGROUNDWATERWATER TABLERIVERS AND LAKESCreate a word bank for the new terms above with definitions (use page 38/39)
11 THE GLOBAL HYDROLOGICAL CYCLE At the bottom of your diagram, and using page 38 39:Describe the global hydrological cycleWith a diagram this question is usually worth between 6 and 10 marks,The Earth contains a finite amount of waterThe highest % is stored in the world’s oceans (95%)Second highest % trapped in ice caps and at the polesHeat from sun results in evaporation from the oceansMoist air condenses and precipitation resultsClouds form and transport waterPrecipitation may occur as rain or snow depending on altitudeRainwater returns to oceans and seas via rivers and streamsWater can infiltrate the soil and rocks and return to the system as groundwater flowWater can also be evaporated from lakes or transpired from vegetation