Vocabulary
The energy of a moving object.
How is sound energy produced?
It is produced by vibrations.
What happens during a collision?
Energy is transferred.
What is heat?
Heat is the transfer of thermal energy from one object to another.
Electric charges can be ______ and ______.
Positive and negative.
What is collision?
When one object bumps into another object.
Name some energy changes that happen when dominoes fall.
Kinetic energy, sound energy.
What energy changes occur when a bowling ball strikes pins?
Sound energy and kinetic energy happens, moving the pins and making a noise.
What moves faster? Cold or hot particles?
Explain why copper wire have a plastic covering.
The plastic helps the electric current not to electrocute you.
What is light?
A form of energy we can see.
Name three energies we use at home.
Light energy, heat energy and electric energy.
Whats an example of a collision that leads to energy changes?
Any example.
Where does the thermal energy flow to, if a hot cup is sitting on a cold plate?
It flows from the cup to the plate.
What happens if the electric current has a space in it?
The electric current won't flow through the circuit.
What is a conductor?
A material that allows electric current to pass through.
Why can't sound travel in a vacuum?
Because there is nothing for the sound waves to travel through.
How does a newton's cradle work? Why don't the balls in the middle move?
The balls in the middle are transferring energy so they don't move.
Name some NATURAL forms of light energy.
Jellyfish, sun, fire, fireflies etc
What does a resistor do in a light bulb?
It helps control the electric current.
What is a resistor?
What has more energy? A fast object or a slow object?
A fast object.
Name some animals with high pitched and low pitched sounds.
Any example.
Any examples.