Why is the plant releasing bubbles when the light is turned on?

• respiration

• breathing

• photosynthesis

If you increased the light, what will happen to the amount of bubbles?

• more bubbles

• same number of bubbles

• less bubbles

What gas is contained in the bubbles?

• carbon

• carbon dioxide

• oxygen

• methane

What is the independent variable in this experiment (what are we deliberately changing)?

• The amount of light

• the number of bubbles

• temperature

• distance

What is the dependent variable in this experiment (what are we measuring and counting)?

• The amount of light

• the number of bubbles

• temperature

• distance

A similar experiment is done to see how the colour of light affects the number of bubbles. What is the independent variable in this experiment?

• colour of light

• number of bubbles

• temperature

• power of light

A similar experiment is done to see how the colour of light affects the number of bubbles. What is the dependent variable in this experiment?

• distance between lamp and plant

• number of bubbles

• temperature

• power of light

What are the control variables in this experiment (what are we deliberately keeping the same to make a fair test)?

• colour of light

• temperature

• distance