Matter & Energy
The three common states of matter.
What are solid, liquid, and gas?
The law stating that energy cannot be created or destroyed, only transformed from one form to another.
What is the law of conservation of energy?
The rate at which an object changes its position.
What is speed?
The principle states that for every action, there is an equal and opposite reaction.
What is Newton's third aw of motion?
A rigid bar that pivots around a fixed point called a fulcrum.
What is a lever?
This is the process by which plants convert light energy into chemical energy.
What is photosynthesis?
When a substance changes state from a liquid to a gas, this type of energy is absorbed.
What is latent heat of vaporization?
Newton's first law of motion is also known as the law of ___?
What is inertia?
The rate at which work is done or energy is transferred.
What is power?
A machine consisting of a grooved wheel with a rope or cable passing over it.
What is a pulley?
Energy that is stored due to an object's position or condition.
What is potential energy?
The measure of the average kinetic energy of the particles in a substance.
What is temperature?
When two objects rub against each other, this force opposes their motion.
What is friction?
The product of force and the distance over which the force is applied.
What is work?
A doorknob is a common example of this simple machine.
What is a wheel and axle?
The sum of all the kinetic and potential energy in a system.
What is mechanical energy?
What are the three observable signs that indicate a chemical reaction has taken place rather than a physical change.
What is gas production, precipitate formation, and temperature change?
This is the change in velocity of an object over time.
What is acceleration?
This phenomenon occurs when light bends as it passes from one medium to another.
What is refraction?
This simple machine is essentially two inclined planes back-to-back, used for splitting or cutting.
What is a wedge?
Which state of matter has the highest amount of kinetic energy?
What is plasma?
Determine whether cooking an egg is a physical or a chemical change and explain why.
What is a chemical change because heat causes the proteins in the egg to denature and this creates a new structure, texture, and color?
True or false? If an object is moving at a constant speed in a straight line, the net force acting on it must be zero.
What is true?
If two identical marbles are pushed off the edge of a table simultaneously, but Marble A is pushed with twice the velocity of Marble B, which marble hits the ground first?
What is both marbles hit the ground at the exact same time?
What is force?