Electricity

Sally is creating a model to show what happens when electricity is used.  She decided to show the motor spinning below as her model. How could she best explain what is happening?

• Electric energy is transformed into thermal energy

• Heat energy is transformed into electrical energy.

• Mechanical energy is transformed into electric energy.

• Electric energy is transformed into mechanical energy.

Will the light bulb light up if the switch remains open as shown?

• Yes, because the circuit will be complete.
• Yes, because the battery will push the electric current.
• No, because the electric circuit is not complete.
• No, because the battery will push the electric current.

The circuit below lit the light bulb. What is the best claim we can make from this evidence?

• The metal key is an insulator.
• The metal key is a conductor.
• The wires are not conductors.
• The circuit is not complete.

Tags

NGSS.MS-PS2-3

Jill finds that all of the electric cords in her school are covered in plastic. Why is it important to cover the electric cords with plastic?

• Plastic is an insulator.
• Plastic is a conductor.
• Plastic is strong.
• Plastic will melt.

Tasha tested several items to see if they could conduct electricity.  Her data is shown below. What is the best claim she could make from her data?

• Wood is an insulator.
• Metal is an insulator.
• Keys are insulators.
• Toothpicks are conductors.

What do you call a circuit where there are 2 or more pathways for the current?

• series circuit

• open circuit

• parallel circuit

• short circuit

Select all that are insulators.

• rubber

• plastic

• iron

• copper

• wood

Tags

NGSS.MS-PS3-3

Select all that are conductors.

• copper

• plastic

• rubber

• iron

• silver

What kind of circuits prevent the movement of electrical energy?

• open circuits

• short circuits

• closed circuits

• happy circuits

What kind of circuits allow the movement of electrical energy?

• broken circuits

• short circuits

• open circuits

• closed circuits