Hypotheses & Scientific Method
This is a statement that makes a prediction about what will happen in an experiment.
What is a hypothesis?
This is the variable that a scientist intentionally changes in an experiment.
What is the independent variable?
Data that uses numbers and measurements is called this.
What is quantitative data?
The independent variable is placed on this axis of a graph.
What is the x-axis/horizontal axis?
This group does not receive the experimental treatment and is used for comparison.
What is the control group?
Scientists often follow this cycle because research can lead to new questions and investigations.
What is the scientific method/scientific inquiry cycle?
This is the variable that is measured or observed as a result of the experiment.
What is the dependent variable?
Data that describes characteristics using words rather than numbers is called this.
What is qualitative data?
The dependent variable is placed on this axis of a graph.
What is the y-axis/vertical axis?
Scientists repeat an experiment multiple times primarily to improve this.
What is reliability?
If an experiment does not support your hypothesis, you should do this instead of changing the data.
What is report the results and develop a new hypothesis or investigation?
A scientist tests whether the amount of water affects plant growth. The height of the plant after two weeks is this variable.
What is the dependent variable?
“The plant grew 4.5 centimeters in one week” is an example of this type of data.
What is quantitative data?
To find the interval for a graph, you divide the range by this.
What is the number of intervals?
A scientist wants to test whether salt affects how quickly sugar dissolves. The amount of salt added is this variable.
What is the independent variable?
A scientist notices that plants exposed to more sunlight grow taller and then predicts that more sunlight causes more growth. The prediction is this part of scientific inquiry.
What is a hypothesis?
A student tests different amounts of fertilizer on bean plants. The amount of water each plant receives should be this type of variable.
What is a controlled variable/constant?
A scientist sees that a solution changed from clear to blue. This is an example of this.
What is an observation?
A graph has a range of 73 and is divided into 12 intervals. About how many units should each interval represent if you round to the nearest whole number?
What is 6?
Plants receiving more sunlight consistently grow taller than plants receiving less sunlight over several trials. This type of evidence provides strong support for a scientist's conclusion because it is this.
What is consistent/repeated evidence?