PS.5 Unit Test Review

Front

What is radiation?

Back

Radiation is the transfer of energy through space in the form of waves or particles. An example is sunlight, which can cause a person to get a tan.

Front

What is potential energy?

Back

Potential energy is the energy stored in an object due to its position or state. For example, a ball held at a height has potential energy.

Front

What happens during melting?

Back

Melting is the phase change where a solid turns into a liquid as it absorbs heat. For example, ice melting into water.

Front

What type of energy does a kitchen mixer convert?

Back

A kitchen mixer converts electric energy into kinetic energy, which is the energy of motion.

Front

What type of energy is released to the environment during energy conversion?

Back

Thermal energy is released to the environment as heat during energy conversion processes.

Front

What is the process of vaporization?

Back

Vaporization is the phase change from liquid to gas, occurring when a liquid is heated.

Front

What is the difference between mechanical energy and chemical energy?

Back

Mechanical energy is the energy of motion, while chemical energy is stored in the bonds of chemical compounds.

Front

What is an example of energy transfer?

Back

An example of energy transfer is when chemical energy in food is converted into mechanical energy when we move.

Front

What is the significance of point A in a phase change graph?

Back

Point A typically represents the temperature at which a substance begins to change phase, such as melting.

Front

What is the definition of thermal energy?

Back

Thermal energy is the energy that comes from the temperature of matter, related to the motion of particles.