Basic Concepts of Matter and Electricity

What are the tiny building blocks that make up all matter?

• Molecules

• Atoms

• Cells

• Particles

What is the term for an excess of positive or negative charge in an object?

• Magnetic force

• Kinetic energy

• Static electricity

• Gravitational pull

What is the push or pull between two charged objects called?

• Magnetic force

• Electric force

• Gravitational force

• Friction

What happens when two objects have opposite charges?

• They repel each other

• They attract each other

• They remain neutral

• They explode

Why does your hair stand on end after taking off a wool cap?

• The cap makes your hair wet

• The cap pulls your hair

• Negative charges move from your hair to the cap

• The cap is too tight

Why does a balloon stick to a wall after being rubbed against your hair?

• The balloon is sticky

• The wall is magnetic

• The balloon picks up negative particles from your hair

• The wall is wet

What does the word "static" mean in the context of static electricity?

• Moving

• Not moving

• Exploding

• Vibrating

What is lightning a result of?

• Slow release of kinetic energy

• Fast, powerful release of static electricity

• Gradual buildup of heat

• Sudden drop in temperature

Why is it safer to avoid high ground during a lightning storm?

• Lightning often strikes the tallest object

• Lightning avoids tall objects

• High ground is slippery

• High ground is colder