What do you call the variable you change or manipulate in an experiment?

• The dependent variable

• The independent variable

• The controlled variable

• The scientific variable

A good controlled experiment has:

• One experimental group and control

• One experimental group and more than one control

• Multiple experimental groups and no control

• Multiple experimental groups and one control

How should you manipulate the sample size and number of trials in order to reduce error in an experiment?

• Have a large sample size and one trial

• Have a large sample size and multiple trials

• Have a small sample size and one trial

• Have a small sample size and multiple trials

A good experimental method is:

• Written in a step-by-step fashion

• Lists all the materials you need for an experiment

• States the specific measurements and observations you need to make in an experiment

• All of the above

Identify the types of relationships in the three graphs.

• Direct, indirect, constant

• Indirect, direct, constant

• Constant, direct, indirect

• Constant, indirect, direct

What is a bias?

• A judgment based on facts

• A judgment based on opinion

• A scientific observation of a natural process that occurs on Earth

• A non-scientific prediction about something in the natural world

Which form of communication would be best to provide a "snapshot" or summary of your findings in an experiment?

• A report

• A presentation

• A poster

• A poem

What should you NOT do when communicating or arguing scientific ideas?

• Back up your ideas with reliable pieces of evidence

• Credit others' ideas by citing where you obtained those ideas

• Consider and discuss alternative viewpoints and provide evidence that refutes them

• Use feeling and emotion to make a case for your argument

How is a control important to a controlled experiment?

• It represents the most "normal" conditions

• It will lead to a correct answer because it is controlled

• It will allow a scientist to make sure the experiment does what they want it to do

• None of the above

Which is a way you can reduce error in an experiment?

• Use a small sample size and one trial

• Change all of the variables

• Follow the experimental method meticulously

• If you do not have the correct lab equipment, just make do with what you have