1.2 Scientific Investigation

A controlled variable

• The thing you change on purpose

• Can be measured to test your hypothesis

• Something in an experiment that can change but we keep the same

• Is the thing that determines how the experiment is run, in control of the experiment

A Hypothesis

• What you think will happen starting with "I predict..."

• A statement of your prediction for the outcome of the experiment

• A summary of the dependent variable

• A statement explaining what your experiment found out

What are the five steps in the Scientific Method?

• inference, hypothesis, experiment, data, conclusion

• conclusion, data, experiment, hypothesis, question

• hypothesis, experiment, data,inference,conclusion

What step does every scientific experiment begin with?

• hypothesis
• question/problem
• procedures
• conclusion

On a graph, where is the manipulated variable placed?

• X-Axis

• Y-Axis

What is an observation?

• A scientific statement based on ideas
• Using your senses to notice what is going on around you
• To be unaware of your surroundings

What is the type of graph

• A straight line that passes through the origin

• A straight line with a position gradient that does not pass through the origin

What is the relationship between y and x?

• Y is Directly proportional to x

• Y is Inversely proportional to x

• Y is Increases linearly to x

• Y increase with x

Interpretation of graph is

• Y increases linearly with x

• linear equantion y=mx + c

• y is directly proportional to x

Diagram shows the graph to summarise an investigation. The ....................... to determine the value of a physical quantity.

• Interpolation

• Extrapolation