Energy and Forces Pretest

What is an electric circuit?

• A material that does not allow electric current to flow through it.

• A type of battery used to store electrical energy.

• A device that converts electrical energy into mechanical energy.

• A closed loop or pathway that allows electric current to flow through it.

What is thermal conductivity?

• The property of a material to conduct light.

• The property of a material to conduct sound.

• The property of a material to conduct electricity.

• The property of a material to conduct heat.

What is a magnetic field?

• A magnetic field is a region in space where sound waves can be detected.

• A magnetic field is a region in space where electric charge can be detected.

• A magnetic field is a region in space where gravity can be detected.

• A magnetic field is a region in space where a magnetic force can be detected.

How does heat transfer occur?

• Absorption, reflection, and transmission

• Evaporation, condensation, and sublimation

• Expansion, compression, and diffusion

• Conduction, convection, and radiation

What is electrical resistance?

• The measure of the amount of electric current in a material.

• The measure of how easily electric current flows through a material.

• The measure of the voltage in a material.

• The measure of opposition to the flow of electric current in a material.

What are the components of an electric circuit?

• power source, conductors, resistors, capacitors, inductors, switches

• power source, conductors, resistors, capacitors, inductors, switches, transformers

• power source, conductors, resistors, capacitors, inductors, switches, diodes

• power source, conductors, resistors, capacitors, inductors, switches, transistors

How is thermal conductivity measured?

• Using a thermometer

• Using a thermal conductivity meter or analyzer

• Using a ruler

• Using a stopwatch

What are the properties of a magnetic field?

• A magnetic field is a region in space where a magnetic force can be detected.

• A magnetic field is a region in space where a gravitational force can be detected.

• A magnetic field is a region in space where an electric force can be detected.

• A magnetic field is a region in space where a sound wave can be detected.

What are the different methods of heat transfer?

• conduction, convection, and radiation

• evaporation, condensation, and sublimation

• compression, expansion, and adiabatic

• reflection, refraction, and diffraction

How does electrical resistance affect the flow of current?

• Resistance increases the flow of current.

• Resistance has no effect on the flow of current.

• Resistance decreases the flow of current.

• Resistance impedes the flow of current.