Vocabulary 1
a heating unit that stores and warms water
water heater
when something stays mostly the same over time
stability
the energy that an object has because it is moving
kinetic energy
tiny organisms that are made of a single cell
bacteria
to move from one object to another or one place to another
transfer
a small part that is meant to show what the whole is like
sample
to reach a conclusion using evidence and reasoning
infer
when something becomes different over time
change
a measure of how hot or cold something is
temperature
to make something safe to eat or drink by heating it
pasteurize
water that is underground
groundwater
the moment when two objects hit each other
collision
the total kinetic energy of all the molecules that make up a sample
thermal energy
a group of atoms joined together in a particular way
molecule
a balanced state in which a system is stable, such as when two or more samples are at the same temperature
equilibrium
the ability to make things move or change
energy
a set of interacting parts forming a complex whole
system
anything that has mass and takes up space
matter
a number that summarizes a set of data and that can be computed by adding all the numbers in a list and then dividing by the number of numbers in the list
average
Ms. Zhang and Ms. Dempsey's favorite color
green