Graphs
This is a tool used in science to analyze data and determine relationships.
What is a graph?
This relationship is characterized by an increase in the independent variable leading to an increase in the dependent variable.
What is positive or direct?
Describe the difference between mass and volume without using the term matter.
Volume: the amount of space an object takes up.
Mass: the amount of "stuff" an object has (number of particles, atoms, molecules, etc.)
This is the quantitative description of density (mathematical equation).
What is density = mass/volume?
Models can help to make ____________ about what will happen in the future.
What is predictions?
Typically, we only want to compare this many things at a time.
What is 2?
A constant relationship would look something like this if graphed.
What is a horizontal line or a series of dots that resembles a horizontal line?
This is a qualitative description of density.
What is how compacted or condensed an object is?
If a pillow were to be vacuum sealed in a bag, what would happen to its mass, volume, and density?
Mass: unchanged
Volume: decreased
Density: increased
Models aid not only in representing parts of a system, but in _____________ how a system works.
What is explaining?
This variable is the manipulated variable and should be graphed on the x-axis.
What is the independent variable?
"As the distance between particles increases, the electric force decreases." This is an example of a ___________ relationship.
What is a negative or inverse relationship?
A water balloon and an air ballon are the same size. How do their masses compare? How do their volumes compare?
The water balloon has a greater mass. They both have the same volume.
This is the density of a 10.0 g barium sample with a volume of 2.5 mL.
What is 4.0 g/mL? (density = mass/volume)
This refers to the model that is polished and refined, having had many revisions and many people collaborate on.
What is the consensus model?
This variable is the responding variable and should be graphed on the y-axis.
What is the dependent variable?
"As the speed of an object increases, the potential energy is not affected. It appears to change sometimes, but no prediction can be made." This is an example of a ________________ relationship.
What is NO relationship?
This is the relationship between mass and density.
What is positive or direct?
This is the mass of a wood chip with a density of 0.55 g/cm3 and a volume of 3.20 cm3.
What is 1.76 g? (mass = density x volume)
This is a mathematical representation of a real-world scenario to make a prediction or provide insight.
What is a mathematical model?
"How does vitamin C affect the immune response?"
If this question were to be investigated, what would be the independent variable and what would be the dependent variable?
IV: vitamin C
DV: immune response
"As the mass on the end of a pendulum increases, the frequency of the pendulum remains unchanged." This is an example of a ____________ relationship.
What is a constant relationship?
This is the relationship between volume and density.
What is negative or inverse?
This is the volume of a 5.00 g sample of osmium. The density of osmium is 22.59 g/cm3.
What is 0.22 cm3 (volume = mass/density)?
This symbol means "is related to" or "is proportional to".
What is "~"?