Write a hypothesis about the effect of increasing resistance on the current in the circuit. Use the "if . . . then . . . because . . ." format and be sure to answer the lesson question: "How do changes in voltage or resistance affect current in an electric circuit?"

When the magnetic domains in a material can be aligned, but eventually drift out of alignment, the material is

Beryl states that insulation with the smallest possible thermal conductivity is best to keep a house warm in winter, but worst for keeping a house cool in summer. sapphire insists the reverse is true: low thermal conductivity is good in the summer, but bad in the winter. which one, if either is correct? a. beryl, because low thermal conductivity results in low heat transfer. b. beryl, because low thermal conductivity results in high heat transfer. d. sapphire, because low thermal conductivity results in high heat transfer. e. neither, because low heat transfer is desirable both in summer and in winter.

The first law of thermodynamics states that heat added to a system is neither created nor destroyed but is as it changes into other forms of energy.