Physical Science-chapt 1
Terms
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- milliliter
- used to measure amounts smaller than a liter (one thousandth)
- volume
- amount of space an object takes up
- celsius thermometer
- tool used to measure temperature
- mass
- amount of matter in an object
- meniscus
- point at the bottom of the curved surface of a liquid
- theory
- most logical explanation of events that occur in nature
- hypothesis
- proposed solution to a scientific problem
- graduated cylinder
- tool used to measure volume; usually marked in milliliters
- milligrams
- used to measure the mass of very small objects (one thousandths)
- kilogram
- basic unit of mass in the metric system (one thousand); used to measure large objects; equals 2.2 pounds
- circle graphs
- used to show parts as compared to the whole
- conversion factor
- fraction that always equals 1; used in dimensional analysis
- triple beam balance
- tool used to measure mass
- meter
- basic unit of length in the metric system
- conclusion
- last step of the scientific method; states if hypothesis is correct (accepted or rejected)
- centimeter
- used to measure length of an object smaller than a meter (one hundredth)
- density
- amount of mass in a gvien volume; mass per unit volume (d= m/v)
- physics
- study of forms of energy and laws of motion
- independent variable
- part of the experiment you are testing and varying/changing in the experiment
- cubic centimeter
- equal to a milliliter-used to measure the volume of a solid
- precise
- answers close to each other
- chemistry
- study of what substances are made of and how they change and combine
- metric ruler
- used to measure length
- kilometer
- used to measure large units of length (one thousand meters)
- law
- when a theory is tested many times and generally accepted as true
- meterstick
- used to measure objects longer than a ruler
- metric system
- a decimal-based number system-based on the number 10 and multiples of 10; also called the International System of Units (SI)
- picto graphs
- uses pictures of objects to give more of a visual
- line graphs
- used to show changes over time
- celsius
- metric unit of temperature
- physical science
- study of matter and energy; divided into chemistry and physics
- gram
- used to measure the mass of small objects; a paper clip
- dimensional analysis
- converting one unit to another; involves determining in what units a problem is given, in what units the answer should be and the factor to be used to make the conversion from one unit to another
- accurate
- close to actual answer
- control setup
- part of an experiment that does not contain a variable
- millimeter
- used to measure the length of very small objects (one thousandth of a meter)
- bar graphs
- used to compare quantities
- liter
- basic unit of volume in the metric system-slightly more than a quart
- temperature
- measure of heat or cold of an object
- dependent variable
- part of the experiment that changes as a result of the independent variable