Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download Inside Earth 1-2 worksheets 2013
Document related concepts
Transcript
Inside Earth 1-2 Convection Currents in the Mantle (pp. 25-27) ∆Introduction (p 25) Why does a snowflake melt in your hand? Cite details from you text to support your answer. ________________________________________________________ ________________________________________________________ ________________________________________________________ What is heat transfer and what are the three types of heat transfer? ________________________________________________________ ____________________________________________ 1. ___________________ 2. ___________________ 3. ___________________ ∆Radiation (p 25) 1. Radiation Transfer of energy through e________ s_________. ex: S_________ warms Earth’s surface, or the h______ you feel around a campfire. ∆Conduction (p 26) 2. Conduction heat transfer by d____________ c___________ ex. Spoon in a pot of hot s_________ ex. Your h_________ touching the hot spoon ex. Your tongue touching the hot soup ∆Convection (pp 26-27) 3. Convection - Heat transfer by the movement of a heated f___________ Cooler, denser, Lava lamp heavier lava sinks back down Lava heats up and rises because it is less dense Convection is caused by the d_____________ of temperature and density within a fluid. Compare the density of a very hot blob of “lava” in the lava lamp and a cold blob of the same “lava” in the lava lamp. ________________________________________________________ ________________________________________________________ ________________________________________________________ ________________________________________________________ ________________________________________________________ Use arrows to show the convection currents that would flow if the pot of hot chocolate in the drawing was heated. If the pot is no longer heated, when will the convection currents stop flowing? ___________________________________________ _____________________________________________________ ∆Convection in Earth’s Mantle(p 27) In which layer of Earth do convection currents flow? _______________________. How does the mantle get so hot that it melts the rocks that make up Earth (magma)? ________________________________________________________ ________________________________________________________ ________________________________________________________
