Scientific Method
7
Line, bar, pie chart, scatter plot, histogram
An educated guess based on observation and research
Hypothesis
A block of aluminum occupies a volume of 15.0 mL and weighs 45 g. What is its density?
3 g/ml
True
The step by step process scientists use to answer a question is called the _____________ ___________
Scientific method
What variable goes on the x axis? What variable goes on the y axis?
independent; dependent
The factor in an experiment that is unchanged; stays the same
constant
4) Brianna's class wants to determine if boys or girls recycled more paper each day. They set up separate recycling bins in the classroom and labeled them "Boys" and "Girls." The students then placed their paper items in the right bins. Which of the following should the students do each day before emptying the bins?
A. Make lists of the different types of paper in each bin.
B. Count and record the number of paper items recycled in each bin.
C. Make a list of which student recycled which paper item in each of the bins.
D. Record their estimate of the number of times students placed items in each bin
B. Count and record the number of paper items recycled in each bin.
Scientific theory
What are the steps of the scientific method in order?
Ask a question, research, hypothesis, test hypothesis, collect and analyze data, conclusion, communicate results
Month Temperature of water
Feb 42
March 55
Apr 69
May 75
June 79
What goes on the X axis? What goes on the Y axis?
Month; temperature
The variable that is changed or tested; the experimenter has control over this factor
Independent variable
Jonathan and Sarah have performed an experiment and are not sure their results are valid. What should they do to check their results?
A. average their data
B. change their lab report
C. perform a new experiment
D. repeat the same experiment
D. repeat the same experiment
In science, this DESCRIBES a phenomena that happens under certain conditions
Scientific law
What happens to a hypothesis if it is "not supported" by the results of the experiment?
It can be changed or modified
What type of graph is best used to record percent of a whole?
Pie chart (graph)
Control group
When conducting an investigation, a scientist's main goal should be which of the following?
A. The scientist should include his opinions in the results.
B. The scientist should aim to become famous for his work.
C. The scientist should follow a very specific scientific method.
D. The scientist should aim to answer questions about the natural world
D. The scientist should aim to answer questions about the natural world
Name two things a theory and a law have in common.
They are both widely supported and are backed by evidence.
A hypothesis should be __________ and based on ________________
testable; research or observations
What type of graph is best used to represent a change over time?
Line graph
A conclusion or conclusions made about observations
Inference
Jose wants to create an excellent science fair project for the school competition. In order for his project to be valid, which of the following must happen?
A. The project must include his beliefs.
B. The results must be based on evidence.
C. The project must prove his predictions correct.
D. The results must be based on personal opinion
B. The results must be based on evidence.
What is the difference between a hypothesis and theory?
A theory has been tested many times and backed by evidence; a hypothesis is a suggestion as to what will happen