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1. Anna’s body consists, roughly speaking, of 60 kg of water at human body temperature (37...

1. Anna’s body consists, roughly speaking, of 60 kg of water at human body temperature (37 C). Suppose Anna is standing next to a small frozen pond containing 200 kg of ice at 0 C. Which of the following is true?

(a) The total heat energy of Anna’s body is less than the total heat energy of the ice in the pond.

(b) The total heat energy of Anna’s body is the same as the total heat energy of the ice in the pond.

(c) The total heat energy of Anna’s body is greater than the total heat energy of the ice in the pond.

2. Lake Michigan’s average depth is about 100 m. If the temperature of the water increases by by 2.5 C, by how much (to 20% accuracy) will its depth change?

(a) 0.5 cm (b) 12 cm (c) 1.2 cm (d) 4 cm

Please explain how you got your answers. Thanks!

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