Science Inquiry Skills Revision
Define the following terms:
Term
Meaning
Independent
Variable
Dependent
Variable
Controlled
Variables
The Control
Hypothesis
Conclusion
Explain why we control variables in an experiment.
Explain why we repeat experiments using multiple trials.
State TWO things that your conclusion should discuss.
Lucy wanted to know if tennis balls bounced higher on flat hard surfaces or softer surfaces.
She dropped a tennis ball from a height of 1 metre onto four different surfaces, measuring the
rebound height each time. She recorded the following information:
concrete- 57cm, 58cm, 58cm, 57cm, 56cm.
grass- 31cm, 34cm, 30cm, 35cm, 42cm
carpet- 39cm, 41cm, 43cm, 40cm, 39 cm
lino- 55cm, 54cm, 54cm, 56cm, 55cm.
Use the following space to construct a table for Lucy’s results, make sure you include a
column for the averages.
Suggest a suitable hypothesis for this experiment.
What were the independent and dependent variables in this experiment?
INDEPENDENT: __________________________________________
DEPENDENT: ____________________________________________
Draw a suitable graph for the data recorded.
Discussion and Conclusions: Write a concluding statement that summarizes the
relationship observed between the variables in the experiment, and attempt to explain them
using any scientific principles you have studied.
Write the products of the following reactions.
Acid + Metal 
Acid + Carbonate 
Metal + Oxygen 