Vocabulary
What is the Independent variable?
The variable that we control and has an effect on the dependent variable.
What is a bar graph?
Includes a descriptive title, x and y axis labels, (units), scale, and data listed on top of bars.
When is scientific notation used?
Used to get rid of zeros in very big or small numbers.
What is Density?
How compact the matter is.
How to solve for:
density=mass/volume
How do you write a proper Hypothesis?
If the IV is (increases/decreases), then the DV will (increases/decreases) because (background info.)
ex. If the length of the wings is shortened, then the distance flown will decrease because of aerodynamics.
What is the Dependent variable?
The variable that changes as a result of changes in the Independent variable.
What is a Line graph?
Includes a descriptive title, x and y-axis labels, units(numbers years ext.), has a line, and a scale based on data points.
What is the equation?
N*10^n
What is mass?
Measurement of the amount of matter. It's measured in grams.
Solve by:
density* volume=mass
What are the Metric Prefixes?
Kilo-Hecto-Deka-Base or One (grams, liters, or seconds)-Deci-Cinti-Milli
Ex. Kids hate dinner because dads cook mice.
What is a Hypothesis?
An educated guess, or prediction
Is the x-intercept independent of the dependent?
The independent variable, which determines the dependent variable the y-axis.
What do "N" and "n" represent?
"N" is the number that is between 1 and 9. There has to be one number left of the decimal.
"n" is the number of places moved. If standard form is greater than 1 and is a positive exponent. If standard form is less than 1, the exponent is negative.
What is volume?
Measurement of how much space an object occupies.
How to solve for:
mass/density=volume
What are the advantages of the Metric system?
Multiply or divide by 10 to make bigger or smaller.
Only 7 different measures.
What is a Testable Question?
You're able to test it and get the same answer, and you can't look it up on Google. It also cannot be an opinion.
ex. Which sandwich bag will stretch the most before ripping in half?
What is a Pie graph?
Has a descriptive title, has percentages, a key or legend, and a total amount.
Problem: 2.47*10^-3
0.00247
move the decimal 3 times to the left.
What is the mass of the object if the density is 2.5 g/mL and the volume is 15mL?
2.5g/mL*15mL
=37.5g
The mL cancels out
Convert each number in regular notation to scientific notation.
Problem: 0.0024
2.4*10^-3
What is Control?
It is what needs to stay the same in every trial so it doesn't mess up the data.
What do all good graphs need?
Descriptive title, data, and labels.
Problem: 9.3*10^7
93,000,000
Move the decimal to the right 7 times.
What is the density of the oil if the chef fills a 50mL container with 43.5g of cooking oil?
=0.87g/mL
43.5g/50mL
the mass(g) is always on top
Convert each number in regular notation to scientific notation.
Problem: 45,995
4.5995*10^4