Vocabulary
Define hypothesis
An educated guess or prediction
If the _____ (IV) is _____ (increased/decreased), then the _____ (DV) will _____ (increase/decrease) because ________________.
What is the IV of "Will an egg float higher in water with more salt?"
IV: Salt (amount)
What is the Metric System acronym?
Kites
Have
Dirt
On
Dem.
Clean
More
"DRY MIX" for line graph
d=dependent m=manipulate
r=responding i=independent
y=y axis x=x axis
What is scientific notation used for?
Used to get rid of zeros in very big or very small numbers
ex. 1.9 x 1019 = 19000000000000000000
What is a testable question?
Get an answer and see if it's the same answer. (consistency)
It can be physically manipulated and is not an easy answer. It's ungoogleable.
NO "yes" and NO "no" answers. NOT an opinion
What is an Independent Variable? What makes something an independent variable?
Can stand on its own
You can make the changes
Main change happens during expirement
"Cause" in cause and effect
ask: "What am I changing?"
What makes the metric system better to use?
It is a base-10 structure that allows for easier conversions
It makes trading with other countries easier
Only the decimal changes
Most places in the world use it
What should a line graph include?
title-specific
x and y-axis labels
units in ()
a line
scale-data base
How do you calculate density?
Mass divided by volume, keep labels
Define Mass
Measurement of the amount of matter (measured in grams)
can be calculated by DxV
What is a dependent variable? What makes something a dependent variable?
Data will be collected from it
"effect" in cause and effect
ask: "What am I measuring or looking for?"
responds to the change in IV
1000mg = how many g
1 gram
What should a bar graph include?
title-specific
x and y-axis labels
units in ()
scale-data based
bars
12.9/8
Density = 1.61 grams/cm^3
Define volume
How much space an object takes up
Solids: regular shape: l*w*h (cm^3 is cm*cm*cm)
Solids: irregular shape: water displacement method (final volume minus initial volume) in mL
1 mL=1 cm^3
Calculate by m/d
DV: Height of plant
5 L = how many mL
5000 mL
What should a pie graph include?
Title-specific
key or legend with different colors/labels
percents calculated
total number surveyed
What is 3,240,000 after using scientific notation?
3,240,000.
move the decimal 6 places left to get the number between 1-9
3.240000
3.24 x 10^6
Define constant
Could affect results, but won't change from trial to trial.
Ex. If the independent variable is day, and the dependent variable is gallons of milk, then the constant could be the time of day the milk is bought.
The time of day from trial to trial should be the same.
Where do the IV and DV fall on a graph?
Independent = x-axis
Dependent = y-axis
480 cm = how many m
4.80 m
How do you calculate a percent?
Part (individual category) divided by Whole (total amount) x100
How to get 2.409 x 10^-4 in standard form?
S.N. -> Standard Form
2.409 x 10^-4
move the decimal four places to the left because it's a negative exponent
0.0002409
Since the decimal is in front of the 2, you only have to add three zeros