Question

Two plants are grown using the same light and containers. One plant is given water that has been microwaved, and the other plant is given regular tap water. Their height is measured after 2 weeks. What is the independent variable?

Options:
a. Height of plant
b. Type of plant
c. Container type
d. Type of water

Answer 1

The independent variable in this experiment is the type of water - microwaved water and regular tap water. The dependent variable is the height of the plants. The other factors that need to be controlled are the amount of water, amount of light, and type of container.

Step-by-step explanation:

The independent variable in this experiment is the type of water,

1. Height of plant: This is the dependent variable because it is being measured and is expected to be affected by the type of water given to each plant.
2. Type of plant: This is not being manipulated in the experiment and does not have an effect on the growth of the plants.
3. Container type: This is not being manipulated in the experiment and does not have an effect on the growth of the plants.
4. Type of water: This is the independent variable because it is being manipulated by using microwaved water for one plant and regular tap water for the other plant.

The other factors that need to be controlled in this experiment are:

1. Amount of water: The plants should receive the same amount of water to ensure that the only difference is the type of water.
2. Amount of light: The plants should receive the same amount of light to ensure that it does not affect the growth differently in each plant.
3. Type of container: The plants should be grown in the same type of container to ensure that it does not affect the growth differently in each plant.