Energy Basics
Energy cannot be created or destroyed, only transferred or transformed
What is the law of conservation of energy?
Does a ball suspended in the air by a rope have more potential or kinetic energy?
What is potential energy?
What form of energy is stored in chemical bonds?
What is chemical potential energy(chemical energy)?
Two billiard balls colliding and bouncing apart are an example of what type of collision?
What is elastic collision?
Where does most of the energy used in nature on Earth originally come from?
What is the sun?
What type of energy comes from the internal motion of atoms and particles?
What is thermal (heat) energy.
What natural force gives an object gravitational potential energy?
What is gravity?
Gasoline burning in a car engine to help the car move is an example of what transformation?
What is chemical energy converted to kinetic energy?
Two lumps of clay colliding and sticking together are an example of what type of collision?
What is inelastic collision?
The total electric charge in an isolated system remains constant.
What is the law of conservation of electric charge?
What energy comes from the arrangement of particles in an atomic nucleus?
What is nuclear energy?
An object raised higher off the ground has more of what kind of energy?
What is gravitational potential energy?
Solar panels converting sunlight into electrical energy is an example of what energy?
What is radiant energy?
What force can prevent perpetual motion in real-world systems?
What is friction/air resistance?
The total electric charge in an isolated system remains constant.
What is the law of conservation of electric charge?
What is Einstein's equation relating energy and mass?
What is E=mc²?
As a ball falls, what happens to its potential energy?
It decreases as kinetic energy increases
When friction slows an object, what can its mechanical energy become?
What is thermal energy and/or sometimes sound?
In an isolated collision, what quantity is conserved even when kinetic energy is not?
What is linear momentum?
Why does a bouncing ball reach a lower height after each bounce?
Some mechanical energy transfers into heat, sound, and deformation.
What is the standard unit used to measure energy?
What is the Joule?
At the highest point of a ball's upward motion, what happens to its kinetic energy for an instant?
It reaches its minimum; for a ball thrown straight up, its speed and kinetic energy are momentarily zero.
When a spring is stretched and released, what energy transformation occurs?
What is elastic potential energy into kinetic energy?
In elastic and inelastic collisions, which one's kinetic energy is conserved and which one's is not conserved?
elastic-conserved, inelastic-not conserved
When a spring pushes back after being stretched, where can some of the mechanical energy go?
Converted into thermal energy through friction