(pls me) brainlest answer too 4.) heat is transferred through a piece of metal by conduction convection radiation 5.) heat from the sun travels to earth by conduction convection radiation 6.) energy in a vacuum travels by conduction convection radiation 7.) in a convection current a.) warm fluid sinks to replace cool fluid b.)warm fluid is more dense, and therefore, rises c.)cool fluid is more dense, and therefore, sinks d.)heat flows from cooler areas to warmer areas 8.) nuclear reactions occurring in the sun select all that apply. generate light generate heat absorb a lot of energy fuse atoms of hydrogen to make helium atoms 9.) which of the following statements is true? a.) temperature is an average measure of the heat energy in a substance. b.)the transfer of heat in a fluid does not require physical contact between molecules. c.)the sun's energy comes from the nuclear reactions of changing hydrogen into helium. d.)all of the above.ω∵
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