| A | B |
|---|
| observation | something you see,hear, smell, taste or touch to learn |
| to record an observation | to keep track of what you observe |
| a hypothesis | an educated guess that you can test |
| experiment | a controlled test |
| a variable | factors that can change in an experiment |
| to control a variable | to keep it from changing |
| data | a number of observations |
| to test a hypothesis | perform an experiment |
| motion | a change in position |
| a force | a push or a pull |
| distance | the space between 2 places, and how far an object has moved |
| speed | how fast an object moves |
| direction | the path taken as something moves |
| work | using a force to move an object a distance |
| a machine | makes work easier |
| a simple machine | a tool that makes it easier to move an object |
| lever | a bar that rests on a point |
| inclined plane | a slanted surface or a ramp |
| wheel and axle | a connected large and small wheel |
| wedge | one or more inclined planes that help you pry an object apart |
| pulley | a rope or chain around one or more wheels |
| balance | a tool for measuring mass |
| cold front | a fast-moving weather front that is followed by cooler air |
| conclusion | a decision you make based on how you interpreted your data |
| consumer | a living thing that gets energy by eating plants or animals |
| graph | a way to show data |
| interpret data | to look carefully at a collection of facts to figure out what they mean |
| length | the distance from one end of a solid to the other |
| pattern | a regular change in the data |
| revolution | the movement of the earth around the sun |
| survive | stay alive |
| table | a chart for listing numbers and facts in columns and rows |
| warm front | a weather front that often pushes clouds and rain ahead of it |
| year | the time it takes for Earth to make one revolution around the sun |
| independent variable | the variable that changes in an experiment |
| the constants | the variables that do NOT change in an experiment |
| dependent variable | the variable being measured |
| barometer | an instrument that measures air pressure |
| hygrometer | an instrument that measures water vapor in the air |
| anemometer | an instrument that measures wind speed |
| calendars | were made to explain recurring natural phenomena |
| scientific theory | an explanation backed by results obtained from repeated testing |
| steps 1,2,3,4 of an experiment | ID the problem, gather info, develop hypothesis, test it |
| steps 5,6,7 of an experiment | make observations, analyze results, draw conclusions |
| some topics in earth science | maps,climates,fossils,weather,ocean water, mountains |
| some topics NOT from earth science | zoo animals, fish, trees, human reproduction |
| earth science | the study of earth and space |
| ethics | knowing what is good or bad |
| scientific law | a rule that describes the behavior of something in nature |
| control | what you compare your results to |
