What is energy?
The ability to do work or change an object.
What is work?
The measurement of the energy used to perform a task.
What is the equation for work?
force x distance (the force was applied)
What do all forms of energy have in common?
They all have the ability to do work.
What is the difference between potential and kinetic energy?
Potential=stored, ready to use, latent; kinectic=moving object
A weightlifter lifts a barbell above her head and holds it there. Explain the work, energy, and force in this situation.
She used kinetic energy to do work by forcing the barbell above her head. She increased the barbell's potential energy.
What potential and kinetic energies exist when you dive into water?
Kinetic energy from the dive propels you downward in the water. Potential energy decreases as you descend.
What is the difference between thermal energy and heat?
Thermal energy is the energy due to the motion of particles in matter. Heat is the flow of thermal energy between objects due to a difference in temperature.
What is temperature?
Temperature is a measurement of the average kinetic energy of particles in an object.
When you rub your hands together, what change in energy takes place?
Friction between objects changes kinetic energy into thermal energy.
