DC --- First Law of Thermodynamics

To turn the water to steam, heat is being transferred from ______.

• stove to kettle

• steam to water

• kettle to stove

• steam to stove

The first law of thermodynamics applies the conservation of energy principle to systems where heat transfer and doing work are the methods of ---

• isolating heat

• creating energy

• reacting to force

• transferring energy

The first law of thermodynamics states that the change in internal energy of a system equals ----

• the net heat transfer input minus the net work output

• the net heat transfer input plus the net work output

What does the symbol U represent?

• total work done by the system

• change in internal energy of the system

• change in temperature of the system

• total energy of the system

If Q is positive, ---

• there is a net heat transfer out of the system;

• there is a net heat transfer into the system;

• there is net work done by the system;

If W is positive, then ---

• there is net work done on the system.

• there is heat transfer within the system.

• there is total kinetic energy isolation.

What do Heat and Work have in common?

• both involve force through a distance

• both are organized processes

• both can cause a temperature increase