Scientific Working

• What is an independent variable?

  The variable which is changed
• What is a dependent variable?

  What we measure
• What is a control variable?

  What is kept the same throughout the investigation
• Examples of an independent variable.

  . The weight applied to the spring.

  . Amount of water.
• Examples of dependent variables.

  . Extension of spring.

  . Size of plants.

  . Amount of something.
• Examples of control variables.

  . Same spring.

  . Temperature.