1 / 21

Earth’s Energy Transfer

Earth’s Energy Transfer. Once the sun’s energy has reached the Earth, where does it go?. Remember Energy Transfer?. Conduction solids Radiation No medium. Convection - liquids and gases. Earth’s Energy Transfer.

aya
Download Presentation

Earth’s Energy Transfer

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Earth’s Energy Transfer

  2. Once the sun’s energy has reached the Earth, where does it go?

  3. Remember Energy Transfer? Conduction • solids Radiation • No medium • Convection • - liquids and gases

  4. Earth’s Energy Transfer • The atmosphere and hydrosphere are able to absorb and store, and transfer thermal energy. • Referred to as heat sinks.

  5. Hydrosphere • Includes all water, water vapour and ice on Earth. • Water absorbs and stores more energy than land.

  6. Hydrosphere and Climate Precipitation Transpiration Evaporation Remember the Water Cycle?? Surface Run-off Ground water

  7. Water and Energy Transfer • Evaporation– • Absorbs energy from oceans and lakes • Has a cooling effect (cools surrounding area) • Condensation – • Releases energy when vapour condenses into clouds • Makes surrounding warm

  8. Effects of Water on Nearby Regions (Lithosphere) • Water heats up and cools down more slowly than land. • Regions near water are: • Summer- Cooler because the water takes longer to heat up. • Winter- Warmer in the fall as the water slowly emits stored thermal energy as it cools down.

  9. Effects of Water on Nearby Regions • Regions downwind of large bodies of water: • More snowfall due to LAKE EFFECT! • If water is not covered with ice • evaporation increases water vapour • air reaches colder land • condenses into snow!!

  10. Effects of Water on Nearby Regions • Water absorbs more energy than air. This is why water droplets on your skin make you shiver….they are absorbing energy to evaporate!

  11. Energy Transfer in the Oceans • Water travels towards the poles, Water cools, evaporates and freezes, rejectingsalt, becomes more dense and saltier. • Surrounding water becomes saltier, more dense, and sinks to the ocean floor.

  12. Energy Transfer in the Oceans • Currents draw warmer water from the equator travels to the poles to replace the water sinking and also evaporating. • Creates an ocean conveyor system called • Thermohaline Circulation

  13. Energy Transfer in Oceans

  14. Lithosphere • Includes all the solid rock, soil, and minerals on land and under the oceans.

  15. Lithosphere and Climate

  16. Energy Transfer in the Atmosphere • Movement of warm and cold air currents…. • Convection currents.

  17. Energy Transfer in the Atmosphere • Air at the equator heats up, becomes less dense and rises. • Creating low pressure underneath.

  18. Energy Transfer in the Atmosphere • Warm air spreads out towards the poles and cools down. • Cool air sinks back to Earth’s surface. • Creating a circular convection current.

  19. Energy Transfer in the Atmosphere • Air flows from high to low pressure → causes air currents which we recognize as wind. • Typical patterns become prevailing winds which help move warm air to the poles.

  20. Vocabulary Heat Sinks Hydrosphere Lithosphere Thermohaline Circulation Homework Pg. 335 # 1, 4 - 6 347 # 1 – 7.

More Related