Electricity

What might create static electricity?

• Rubbing an inflated balloon in someone's hair

• plugging an extension cord into a wall outlet.

• wind blowing through the trees

• water flowing through rocks

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

What will create static electricity?

• flipping on a light switch in your classroom

• allowing like forces to attract (negative attracts negative)

• rubbing a plastic comb on a piece of wool

• wrapping wire around iron and sending a charge through the wire

A balloon is sticking to a wall.What is the most likely reason?

• The balloon has a static electric charge from rubbing someone's hair.

• The wall has been electrically charged and so attracts the balloon.

• The balloon lost its static electric charge by rubbing in in someone's hair.

• Balloons always stick to walls.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

During a storm, the power went out at Bailey’s house. She had no electricity. What could she use as an alternate form of electrical energy?

• candles

• a fire in the fireplace

• a battery-operated lamp

• a light in the refrigerator

Which statement is true?

• The light bulb will light up because the  circuit is complete.

• The light bulb will light up because the  circuit is broken.

• The light bulb will not light up because the  circuit is complete.

• The light bulb will not light up because the  circuit is broken.

In a simple series circuit with a battery, a bulb, and a switch, what happens when the switch is turned off?

• The bulb receives more power.

• The bulb continues to glow.

• The electrical flow stops and the bulb goes out.

• The battery charges itself.

Tags

DOK Level 2: Skill/Concept

A student constructs the circuit shown for a science demonstration. With the switches in these positions, which lights are on? (a)  

• All the lights

• 1 and 2 only

• 3 and 4 only

• none of the lights

What type of energy transformation occurs when a battery powers a flashlight?

• Light energy to chemical energy

• Chemical energy to electrical energy to light energy

• Electrical energy to chemical energy to light energy

• Thermal energy to electrical energy to light energy

Why is it important for a circuit to have a complete loop?

• To prevent the battery from running out.

• To allow electricity to flow from one end to another.

• To make the devices connected to it operate faster.

• To increase the resistance in the circuit.

Tags

DOK Level 2: Skill/Concept

In a simple circuit, what is the role of a switch?

• To provide energy to the circuit

• To open or close the circuit

• To increase the voltage

• To decrease the resistance