Energy and Thermodynamics Worksheet

What is energy described as in the context of physical systems?

• A conserved, substance-like quantity with the capability to produce change in physical systems.

• A type of matter that can only be created, not destroyed.

• A force that only exists in living organisms.

• A property that cannot be measured or transferred.

What is the SI unit for measuring energy?

• Joule (J)

• Watt (W)

• Newton (N)

• Kelvin (K)

The temperature of an object is a measure of which of the following?

• The average kinetic energy of the particles that make up the object.

• The total mass of the object.

• The color of the object.

• The volume of the object.

What is the sum of the kinetic and potential energies of all the particles in an object called?

• Thermal energy or internal energy

• Mechanical energy

• Electrical energy

• Nuclear energy

How is heat transferred between two objects or systems?

• Due to a temperature difference between them

• By chemical reactions only

• By gravitational force

• By magnetic fields

What does the specific heat of a material represent?

• The amount of heat needed to raise the temperature of 1 kg of the material by 1°C

• The total energy stored in the material

• The speed at which heat travels through the material

• The amount of light the material can absorb

Which method of thermal energy transfer involves collisions between more energetic and less energetic particles?

• Conduction

• Convection

• Radiation

• Evaporation

How is thermal energy transferred by the movement of warmer and cooler materials?

• Convection

• Conduction

• Radiation

• Reflection

Which method of energy transfer occurs by electromagnetic waves?

• Radiation

• Conduction

• Convection

• Absorption

What is the purpose of thermal insulators?

• To reduce the transfer of thermal energy from one place to another

• To increase the speed of heat transfer

• To convert heat into light

• To store electrical energy