Surveys
What is a survey?
Questions used to help gather information
What is an observation?
Using your senses to notice and record what happens
What is an experiment?
A test or investigation that is used to find out if a prediction or hypothesis is correct
What is the purpose of a survey?
To see what students know about a topic
What is the purpose of an observation?
To gather information and understand what is happening
What is the purpose of an experiment?
To test a hypothesis and see if the prediction is supported or rejected by evidence
Is a survey an experiment or observational study?
a survey is an observational study
When are observations used in testing a hypothesis?
To watch what happens and see changes or outcomes to check if your prediction is right
True or False: Experiments always need a control group.
True
What should you do before giving a survey when testing a hypothesis?
Define the hypothesis clearly and come up woth questions that can be related to it
What should you do while making an observation?
Pay attention to details and write down what you actually see
If the results of an experiment do not support the hypothesis, what should a scientist do next?
Revise the hypothesis and test again
Why might a survey be valid for testing a hypothesis?
Must be unbiased and connect to the hypothesis
Why are good observations important?
They make results accurate and help others understand what happened
Do unexpected results mean an experiment failed?
No, they can still provide useful information