Unit 2 Forces

_________________ electricity is the build up of charge.

• Force

• Static

• Positive

• Discharge

The closer the charges, the ___________ the force between them

• closer
• further
• stronger
• weaker

Tags

NGSS.MS-PS2-3

A balloon has a negative charge.  The glass rod has a positive charge.  What will happen when the glass rod is brought near the balloon?

• The balloon will be attracted to the rod
• The balloon will be repelled by the rod
• The balloon will remain in place
• The balloon will spin in circles

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Why do lightning rods need to be grounded?

• They don't. The rod is enough to protect the home
• to create a path for the electricity to get to the ground
• to direct the electricity to the power grid of the house
• to deflect the electricity back into the cloud

Electric charges that are different _______ each other.

• Attract
• Repel

Electric charges that are alike _______ each other.

• Attract
• Repel

Which type of charges do these balloons have?

• like charges
• opposite charges

What is a force that opposes motion?

• magnestism

• friction

• magnetic pole

• controlled experiment

The ends of a magnet where the field is strongest is called what?

• magnetic field

• dependent variable

• magnetism

• magnetic poles

The force exerted by a magnet on certain other materials is called what?

• magnetic pole

• magnetism

• magnet

• magnetic field