A1 Investigative skills 2

What is the independent variable in an experiment?

• The thing you keep the same.

• The thing you measure.

• The thing you change.

What is the dependent variable in an experiment?

• The thing you keep the same.

• The thing you change.

• The thing you measure.

What is a control variable in an experiment?

• The thing you change.

• The thing you keep the same.

• The thing you measure.

How many independent variables do you have in an experiment?

• 1

• 2

• 3

• Any number

How many control variables do you have in an experiment?

• 1

• 2

• 3

• Any amount

Your teacher is investigating whether the amount of light in the room affects how quickly their plants grow. What is the independent variable in this investigation?

• The amount of light.

• The time it takes for their plants to grow.

• The amount of water the plants get.

• The amount of plant food the plants get.

Your teacher is investigating whether the amount of light in the room affects how quickly their plants grow. What is the dependent variable in this investigation?

• The amount of light.

• The time it takes for their plants to grow.

• The amount of water the plants get.

• The amount of plant food the plants get.

What is the independent variable?

• Gas

• Relative Cost

• Helium

• Nitrogen

Is Gas a continuous or categoric variable?

• Continuous

• Categoric

What kind of graph would you plot using this results table?

• Bar chart

• Line graph