Matter
What is a new, pure substance made up of elements that are chemically combined? Examples include water, carbon dioxide and salt.
Compound
Energy in the nucleus of an atom
nuclear energy
What is the changing of position over time?
Motion
The force that causes objects with mass to attract one another.?
Gravity
wavelength
What makes up the nucleus?
Protons and Neutrons
What type of energy includes both kinetic and potential energy?
mechanical energy
Speed is different from velocity because
Velocity has a direction
For every action, there is an equal and opposite reaction.
Newton's Third Law
What are the two types of mechanical waves?
transverse and longitudinal
Texture, color, states of matter, flexibility, freezing & melting points
physical properties
On a roller coaster, where is maximum potential energy?
At the top of the hill
How far an object has traveled is what?
distance
What force slows objects down and keeps them from moving?
Friction
Which type of waves have the longest wavelength?
Radio waves
Which state of matter has tightly packed molecules?
solids
What two factors affect an object's kinetic energy?
Mass and speed
What is the SI unit for speed?
m/s
If an object is stationary (not moving) the forces acting upon it are _____________
balanced
Longitudinal waves are ______.
parallel
What might you observe that would indicate that a chemical change is taking place?
Bubbles, a color change, light, a new smell, a temperature change, a new substance produced, bt its possible that you may not notice
What two types of energy transformation we see when we use an electric keyboard?
electrical and sound energy
Which graph shows distance and time?
acceleration
Static electricity is the buildup of charges between two objects. What best explains why a balloon is attracted to hair when the two have been rubbed together?
he balloon and the hair both have opposite charges
Rarefactions