What is Science 11 notes Science is a systematic way of studying the world It is a way of learning more about the natural world and its natural events and conditions Scientists want to know ID: 499408
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Slide1
The Nature of ScienceSlide2
What is Science?
1.1 notes
Science
is
a systematic
way of studying the world. It is a way of learning more about the natural world and its natural events and conditions.
Scientists want to know
why, how, or when
something occurred. This learning process usually begins by keeping your eyes open and asking questions about what you see (
making an observation
).
Science base their explanations on evidence. Science can answer a lot of questions but there are some it can not. Questions about
art, politics, opinions, faith, or morality
can’t be answered by science.Slide3
Scientific ideas can be tested by
conducting experiments
and
observing the results.
Science can answer questions only with the information available at the time. As new information becomes available, explanations can be changed and new ones made. We are always learning, so science is always
changing
.
An
ATTEMPT
to explain
a pattern that occurs over and over
again is called a scientific
theory
. Theories must be
supported by facts and tested many times
. Theories are the
best explanations
to a problem that we have so far. They are not necessarily right and they can change.Slide4
Example: Big Bang TheorySlide5
A
RULE
that describes a pattern is called a
scientific law
.
For something to become a law, it must be
tested and tested
many times to be sure it is correct. If and experiment’s results are
inconsistent
in other words, the
results are varied
each time it is conducted, it cannot be accepted.
Laws are
different
from theories because they don’t tell
why
something happens, or
how
it happens. Laws just simply
describe
it happening. Laws
do not
usually change
.Slide6
Example: Law of GravitySlide7
1.2 notes
Scientific explanations are
testable
and
refutable
(to prove to be false)
Scientist carry out investigations to learn about the about the natural world. Investigations often follow a general pattern. There is a certain way and certain steps you take to find the answer to a question. This can be called the
scientific method. Slide8
1.3
notes
A model is any
representation of an object
or an event used as a tool for better understanding something. Models can help you
visualize
something that is too big, too small, or too difficult to understand.
Most models fall into three basic types:
Physical models
: you can see and touch.
Computer models
: built using computers, can’t touch but can see on a computer screen.
Idea models
: ideas or concepts that describe how someone thinks about something in the world.Slide9
Physical, Idea, or Computer?Slide10
Models have the following uses:
They communicate with people.
They test predictions.
They save time, money, and lives.Slide11
A
controlled experiment
is one of the most used experiments in science. It is an experiment where you
change only one variable
and watch the effects caused by the change.
Variables are
factors that can change
in a controlled experiment.Slide12
Three types of variables:
Independent variable
: the variable that you change in the experiment.
Dependent variable
: the variable that changes due to the change of the independent variable.
Constants
: these are the variables that do NOT change in the experiment.
Slide13
1.4 notes
Critical thinking means
combining what you already know
with the
new facts
that you are given to decide if you should agree with something or not. You use critical thinking skills everyday without even knowing it.
The
facts
that you gather during your experiments are called
data
. You should be really careful about believing any claim that is not supported by data.Slide14
Some important facts about being a good scientist:
Keep an open mind.
Is the information reliable?
Does it make sense?
Is there enough evidence to support the claim?
Is the data repeatable?
Communicate your findings with others.Slide15
A
system
is a collection of structures, cycles, and processes that relate to and interact with each other.
Science is divided into three main branches:
Life science
: the study of living systems and the way they interact with each other.
Earth science
: the study of Earth and space.
Physical science
: the study of matter and energy
.Slide16
Life, Physical, or Earth Science?
Biology
Geology
PhysicsSlide17
Physical science can also be broken up into two general fields- chemistry and
physics
. Chemistry is the study of
matter
and Physics is the
study of energy.
Slide18
Technology is the
practical use
of science. Examples:
ipad
, computer, anything that makes life easier for us
.Slide19
The End…