Scientific Method
States of Matter
Thermal Energy
Phase Changes
100

An educated guess

hypothesis

100

type of matter with definite shape and volume

solid

100

type of thermal energy through electromagnetic waves

radiation


100

ice to water

melting

200

variable that the scientist changes

independent variable

200

gases have an ____________ shape and volume

indefinite

200

type of thermal energy when heat rises and cool air sinks creating currents

convection

200

water to water vapor

evaporation

300

variables in an experiment that do not change

constants

300

type of matter with an indefinite shape, but a definite volume

liquids

300

type of thermal energy occurring when 2 objects collide

conduction

300

water to ice

freezing

400

variable that the scientist measures as a result of the experiment

dependent

400

stars are an example of this state of matter

plasma

400

currents in the atmosphere, water, and underground

convection


400

solid directly to gas

sublimation

500

type of data using numbers

quantitative

500

__________ is added or removed to change states of matter

thermal energy

500

the sun, heat lamps, light

radiation

500

example of sublimation

dry ice