Motion, Forces, and Energy Unit 3 Test

what is a circuit

• A circuit is a closed path that allows electricity to flow from one point to another

• electricity

Something used to control the flow of electricity to a device

• Cost

• switch

What types of charges attract?

• Positive and Positive
• Positive and Neutral
• Negative and Neutral
• Positive and Negative

What charge does a proton have?

• negative (-)
• positive (+)
• neutral or no charge (0)

What charge does an electron have?

• negative (-)
• positive (+)
• neutral or no charge (0)

If a substance has a higher number of electrons than protons on its surface, what type of charge does it have?

• A positive charge.
• A negative charge.
• A neutral charge
• No charge at all

Tags

NGSS.MS-PS2-5

What happens when you touch a metal doorknob after rubbing your shoes on the carpet?

• The doorknob sends a burst of electric current into your body
• Millions of electrons go from your finger into the doorknob
• The doorknob sends millions of electrons into your finger
• our finger becomes negatively charged

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

What is static electricity caused by?

• A balance of power

• A balance of positive and negative charges

• An imbalance of positive and negative charges

• An imbalance of protons and neutrons

Tags

NGSS.MS-PS2-3

An object becomes postiively charged when which of the following occurs?

• loses electrons
• gains electrons
• loses protons
• gains neutrons

Lightning is _____.

• a buildup of neutrons
• harmless
• a high-voltage electric current
• a large discharge of static electricity

Tags

NGSS.MS-PS2-5