The World of Physical Science
» __________ is a process of gathering knowledge about
the natural world.
» Can you give some examples of sciences?
Science
Life
Earth and Space
Physical
» 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.
2.
3.
4.
5.
6.
7.
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
˃
Metric Measurements Prefixes
Prefix Symbol Factor of Base Unit
kilohectodekaBASE
decicentimilli-
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 = 1.2345 x 104
_________
__________ – must
be between 1 and 9
˃ 0.00456 = 4.56 x 10-3
____________ – the # of
times the decimal was
moved
(+) to the left
(-) to the right
» 56934
=
» 1280 =
» 0.0345
=
» 0.0000037 =
» 2.347 x 10-3 =
» 8.98736 x
104
Reverse it!
=
» 3.48763 x 10-4 =
» 5.7654 x 105 =
(+) right
(-) left