The World of Physical Science

» __________ is a process of gathering knowledge about the natural world. » Can you give some examples of sciences?

Science LifeEarth and SpacePhysical

» Physical science is the study of _______ and ________. ˃Matter is made up of atoms and has both a _________________. ˃________ is the ability to do work. » The branches of physical science ˃__________

» Chemistry is the study of all forms of matter, including ____________________________ ____________ » Chemistry looks at the ___________and __________ of matter.

» __________ looks at energy and how that energy affects matter. » Motion, force, gravity, electricity, light, and heat are parts of physics.

» The scientific method are the ways in which scientists answer questions and solve problems

1) Observation ˃__________________________________ ˃______________ – color, odor, taste, etc. ˃______________ – measurements. ˃Instruments used:

2) Ask a question 3) Hypothesis ˃An explanation that is based on prior scientific research or observations and can be tested. ˃If – then statement.

4) Testing the Hypothesis – Experiment ˃A ______________ compares the results from a control group with the results from the experimental groups. The groups are exactly the same except for one factor. That factor is the ____________. ˃______________ is the variable you change. +Ex. Time ˃_______________ changes in response to the independent variable. +Ex. Distance

» 5) Collect, Record, and Analyze Data ˃__________ is the information gathered through your experiment. ˃All information needs to be recorded in a notebook, in a data table or other recording devices. ˃____________ material makes analyzing the data easier.

6) At the end of the investigation, you ________________________ ˃Accept or reject ˃Change your hypothesis and retest. 7) Communicate results ˃How can you do that?

» A _________ is an explanation for many hypotheses and observations. » ________________ » Can predict future results. » Can not be proven 100% » Examples ˃ » A _____ is a summary of many experimental results and observations. » Laws are ___________ and do not change. » Examples ˃ Newton’s Laws ˃Conservation of Mass

» Length ˃ » Volume ˃ » Mass ˃ » Temperature ˃ » Density ˃ » Time ˃

PrefixSymbolFactor of Base Unit kilo- hecto- deka- BASE deci- centi- milli- Metric Measurements Prefixes

» K H D __ d c m ˃1378 millimeters = ________ dekameters ˃45 centimeters = ________ decimeters ˃4 liters = ________ hectoliters ˃5 kilograms = ________ grams

» A way to express very small or very large numbers » Example: ˃12345 = x 10 4 ˃ = 4.56 x __________ – must be between 1 and 9 _________ ____________ – the # of times the decimal was moved (+) to the left (-) to the right

» 56934= » 1280 = » = » =

» x = » x 10 4 = » x = » x 10 5 = Reverse it! (+) right (-) left