Section+1+Review

=1. Explain how energy moves when you touch a block of ice with your hand.= A. the particles in your hand move and collide with the particles in the ice raising the temperature. =2. Describe how the thermal energy of an object changes when the object's temperature changes.= A. as the thermal energy raises so does the temperature. =3. Infer when heat flows between two objects, does the temperature increase of one object always equals the temperature decrease of the other object? Explain.= A. No, because it depends on the objects specific heat. =4. Explain why the specific heat of water of water is higher that the specific heat of most other substances.= A. The specific heat of water is so high because the chemical bonds in the water is so strong. =5. Think Critically, Explain whether or not the following statement is true: for any 2 objects, the one with the higher temperature always has more thermal energy.= A. The one with the higher temperature most likely doesn't have the most thermal energy because it take less thermal energy to heat up the smaller object. =6. Calculate the change in thermal energy of the water in a pond with a mass of 1,000 kg and a specific heat of 4,184(kg°C) if the water cools by 1°C= A. 1,000kg x -1° x 4,184= 4,184,000J =7. Calculate the specific het of a metal of .5 kg of the metal absorb 9,000J of heat as it warms by 10°C= A. .5kg x 9000J/10 =- 71,800 j/(Kg°C)