measurements and scientific method unit 1.

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mrs.griffin... first unit

matter

Anything that occupies space and has mass

gravity

A force of attraction of the earth for a given object, or of one mass to another

weight

A measure of the force of gravity acting on an object

spring scale

The tool used to measure force

Newton (N)

The basic metric unit of measure of force

mass

A measure of the amount of matter in an object

balance

The tool used to measure mass

kilogram (kg)

The basic metric unit of measure of mass

length

The measure of the distance from one point to another

meter stick

A tool used to measure length

meter (m)

The basic metric unit of measure for length

volume

A measure of the amount of space occupied by an object

graduate

A tool used to measure volume

liter (L)

The basic metric unit of measure of volume

meniscus

The curved surface found at the top of a contained liquid

energy

The ability to do work or cause change

kinetic energy

Energy of motion

potential energy

Energy an object has due to position or state

Law of Conservation of Energy

Energy cannot be created or destroyed, but can change from one form to another

scientific method

A process used for gathering evidence that leads to understanding

observation

An examination of something using your senses

hypothesis

A possible answer to a problem and a statement that can be tested

experiment

A controlled procedure designed to test a hypothesis with measurable results

data

Carefully documented results of an experiment used to draw a conclusion

conclusion

A statement that proves if the data supports the hypothesis

control group

The group in which all variables remain the same

experimental group

The group in which one variable has been changed

infer

The process of drawing conclusions based on experience and prior knowledge

variables

All factors that can influence the outcome of an experiment

independent variable

The variable that is deliberately changed by the experimenter; the manipulated variable (x-axis)

dependent variable

The variable being measured and observed; the responding variable (y-axis)

constant variables

The variables that remain the same throughout The variables that remain the same throughout the experiment; constants or controlled variables

inversely proportional

A relationship where two variables change by the same factor in opposite directions

directly proportional

A relationship where two variables change by the same factor in the same direction

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