3.1 & 3.2
"Energy can be neither created nor destroyed, only changed in form" is definition of this law
What is the law of conservation of energy?
This term applies specifically to energy that is in transit - in the process of being transferred from a warm object to a cooler one
What is heat?
This term is a technical term that refers to a mechanical process of transferring energy from one machine or person to another
What is work?
Atoms in a substance always have this kind of energy
What is kinetic energy?
This is a device used to modify motion and the magnitude of a force in order to perform work
What is a machine?
The famous equation E=mc2 was discovered by this famous scientist
What is Albert Einstein?
Objects are in this state when they are at the same temperature and no heat is flowing in between them
What is thermal equilibrium?
When an archer stretches back a bowstring, work is being performed on the bow storing this kind of energy in the bow
What is potential energy?
This is the sum of all the kinetic energies of the particles in a substance
What is internal energy?
This type of device is made up of two or more simple machines
What is a compound machine?
This theory states that mechanical forms of energy (such as kinetic energy) and heat are the same thing.
What is mechanical equivalent of heat?
Light and heat traveling from the sun is referred to as this type of heat transfer
What is radiation?
When the archer releases the bowstring, the bow does work on the arrow transferring this kind on energy into the arrow
What is kinetic energy?
The ________ a substance is, the faster its atoms move and the more kinetic energy the atoms have
What is hotter?
An axe is an example of this kind of simple machine
What is a wedge?
In the example of a firecracker
chemical potential energy = heat and light + acoustic energy + ________ energy in flying debris
What is kinetic?
This type of heat transfer occurs by the propagation of vibrations of atoms in a solid
What is conduction?
When work is performed, an applied force causes an object to move in this direction
What is the same direction?
In the example of EM radiation from the sun warming up bricks, when the bricks are hotter than the air around it, which substance is experiencing heat transfer
What is the air?
The steeper the incline, the more
nearly the required force approaches the ________ weight of the object
For centuries scientists thought that heat was a kind of weightless gas called this
What is caloric?
This type of heat transfer occurs by molecular motion in fluids
What is convection?
After work has been completed to pick up a bucket, this amount of work is performed when the bucket carried from one place to another is this
What is no work?
Internal energy can be increased by compressing the substance into a _______ volume
What is smaller?
The pivot point of a lever is called this
What is fulcrum?