2_energy_budget - Earths Energy Budget Earth has 2 heat...

Info iconThis preview shows pages 1–8. Sign up to view the full content.

View Full Document Right Arrow Icon
Earth’s Energy Budget Earth has 2 heat engines: Internal External Internal Heat Engine Energy that drives plate tectonics Source = radioactive decay ~1/1000 th the energy provided by the sun
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Earth’s Energy Budget Earth’s External Heat Engine Energy provided by the sun Average global surface temperature = 15°C Balance between * Incoming solar radiation (electromagnetic spectrum, mostly visible light) * Outgoing terrestrial radiation (infrared radiation)
Background image of page 2
Electromagnetic Radiation Form of energy received by the Earth from the Sun Wave/Particle duality Waves Self propagating electric and magnetic waves Wavelength (λ29 ( m 29 Frequency ( ν ) (#/sec) Speed = c = λν (m/sec)
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Electromagnetic Radiation Particles Stream of photons (particles, packets of energy) Energy of a photon * E = h ν or hc/ λ Where E = energy of a photon h = Planck’s constant (6.6 x 10 -34 kgm 2 /sec) ν = frequency c = speed λ = wavelength
Background image of page 4
Electromagnetic Radiation E = hc/ λ E = h ν ν = c/ λ Short wave radiation: - high frequency - high energy Long wave radiation: - low frequency - low energy
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Electromagnetic Radiation Ruddiman 2-1 online 700nm Shortwave Longwave
Background image of page 6
Electromagnetic Radiation Range of wavelengths emitted by any body is a function of its surface temperature
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 8
This is the end of the preview. Sign up to access the rest of the document.

This document was uploaded on 07/08/2011.

Page1 / 34

2_energy_budget - Earths Energy Budget Earth has 2 heat...

This preview shows document pages 1 - 8. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online