Lesson 4.4 Thermodynamics and Energy Conservation

Multiple Choice

The study of the relationship between heat and

_____________ is called thermodynamics.

• thermal energy

• friction

• work

• friction

Multiple Choice

When work is done an object, there is a

transfer of energy.

• true

• false

Multiple Choice

The 1st law of thermodynamics is basically a

restatement of the law of conservation of

_____________.

• Heat

• Energy

• Convection

• Forces

Multiple Choice

Which of the following are examples of the 1st law of

thermodynamics? (pick more than one)

• you rub your hands together and they get warmer

• a chandelier hangs suspended from the ceiling

• the brakes cause a car's tires to skid on the road

• a person gets tired holding a tray above their head

Multiple Choice

The 2nd law of thermodynamics states that heat

flows from colder objects to hotter objects.

• True

• False

Multiple Choice

Entropy is the measure of order a system has. The

more entropy a system has the more ordered it is.

• True

• False

Multiple Choice

Heat engines convert thermal energy (or heat) into

_____________ energy.

• Thermal

• Mechanical

• Potential

• Convection