ESS Test 3 (11th) 21-22

The First Law of Thermodynamics describes the conservation of energy

• True

• False

The type of system that can exchange mass and energy, usually in the form of heat with its surroundings.

• isolated system

• open system

• closed system

The first law of thermodynamics states that energy is

• created

• destroyed

• conserved

2000 calories are taken by a person through food. 800 calories are used for respiration. Then

• 1200 calories were taken by the body

• 2000 calories were taken by the body

• None of the above

What type of system is this?

• Open system

• Closed system

• Isolated system

The second law of thermodynamics states that energy in systems is never wasted in heat form.

• True

• False

Heat energy in system is sometimes called

• waste energy

• clean energy

• concentrated energy

The second law of thermodynamics states that physical, chemical and biological processes are irreversible

• True

• False

 $E_1=E_2+Waste\ Energy$  

According to the first law of thermodynamics we have the following expression. Therfore

•  $E_1>E_2$  

•  $E_1<E_2$  

•  $E_1=E_2$  

Energy becomes dispersed when transferred in systems

• True

• False