Vocab
This part of a speaker is thin, cone shaped, and vibrates to make sound louder.
The strongest parts of a magnet are found at the ends, called the _____.
Poles
Stored energy due to position or distance is called ____ energy.
Potential Energy
Which three parts are essential for a speaker to work?
Magnet, Copper/voice coil, Speaker Cone
A complete circular path that electricity flows through is called a _____.
Circuit
The force that pulls certain objects toward a magnet.
Attraction
What do iron filings show when sprinkled around a magnet?
The Pattern/Shape of the magnetic field
The energy an object has because it is moving is called ____ energy.
Kinetic energy
What causes the copper coil in a speaker to become magnetic?
Electric current running through it
Which part of a circuit stores potential energy?
Battery
This type of magnet is created when electric current flows through a coil of wire.
Electromagnet
Which way/direction do magnetic field lines move around a bar magnet?
North to South
When two repelling magnets are very close together, they have more _____ energy.
Potential Energy
Why does the copper coil both attract and repel the magnet when music plays?
The direction of the electric current switches
Electrons flow and deliver energy only when a circuit is _____.
Closed
The area around a magnet where magnetic forces cause objects to move.
Magnetic Field
When two north poles are pushed close together, the force between them is called _____.
Repulsion
In the magnet cart investigation, when did potential energy turn into kinetic energy?
When the cart is released and starts to move
In an experiment, what is the dependent variable?
The outcome or data collected
Where is kinetic energy found in an electric circuit?
In the wires or device being powered (like a light bulb)
The movement of charged particles, usually electrons, through a circuit.
Current
How does the strength of a magnetic field change as you move farther away from a magnet?
It becomes Weaker
Why does starting with more potential energy lead to more kinetic energy in the cart?
More stored energy causes a stronger push, making the cart move farther
In the magnet cart investigation, what was one independent variable
how far we pull back the cart each trial
Why does an electric current power a device?
Moving electrons transfer energy through the circuit