Transcript Document
Chapter 1- The Nature of Science
For the first page in your notebook, illustrate what
you think science is!
How do we “do” science?
Scientific Method
State the problem
Gather information
Form a hypothesis/state the research question
Variables: dependent, independent
Constants and controls
Test the hypothesis
Analyze data
Draw conclusions
Bias-occurs when what the scientist expects changes how the
results are viewed.
Complete the flip chart on scientific method in your
notebook!
Law vs. Theory –a theory can be used
to explain a law!
Theory
Law
Explanation of things or
A statement about what
events based on knowledge
gained from many
observations and
investigations.
NOT a guess!
CAN be modified!
Examples: Big Bang
happens in nature that
seems to be true all the
time.
They do NOT explain why.
Examples: gravity
Measure up!
Precision
Accuracy
How closely measurements
Compares a measurement
are to each other and how
carefully measurement are
made.
to the real or accepted
values.
Measurement-SI Units
Based on multiples of 10
Standard is the kilogram kept in France!
Meter is base unit of length
Second is base unit for time
Kelvin is base unit for temperature
QUIZ! Write the answers in your
notebook.
A gram is about the size of a (apple, dime, pineapple)?
A meter is about the height of a (door, counter, seat)?
Water freezes at _____C and boils at _________C.
The height of a tall man is about 200 ____.
Normal body temperature is ____C
The thickness of a dime is about ________mm
Metric Prefixes
Copy Mega to nano in your notebook
Converting Metric to Metric
Video Conversion between metric
units | Metric system unit
conversion | Khan Academy
Dimensional Analysis
A conversion factor is a ratio that is equal to one and is used
to change one unit to another .
Homework!
Find your favorite recipe.
Convert from English units to metric
Turn in both the English recipe and metric version!
Volume
Volume-the amount of
space occupied by an object
V=l x w x h
1mL = 1 cm(cubed)
Mass
Mass- is a measurement of
the quantity of matter in an
object.
Density- is the mass per
unit volume of a material
Measured in a derived unit:
g/cm(cubed)
Create a density column in
your notebook!
Temperature
Celsius
0, 100
Body temp is 37
Fahrenheit
32, 212
Body temp
is 98.6
The SI unit for temperature
is Kelvin (K)
0 is coldest possible temp
also known as Absolute
Zero. (-273 C!!)
Water boils at 373 K
Graphs
A graph is a visual display of information or data
Line graph-can show any relationship where the dependent
variable changes due to a change in independent variable.
Bar graph-comparing information
Circle graph-shows how some fixed quantity is broken down
into parts.