Question

question 1: identifying variables based on the video examples, complete the table below by identifying the independent and dependent variables for each experiment:

experiment	independent variable	dependent variable
tree height and water
bananas and blood pressure
tire pressure and gas mileage
water absorption (fresh vs. salt)

Explanation:

Step1: Recall variable definitions

The independent variable is what is changed or controlled in an experiment, and the dependent variable is what is measured and affected by the independent variable.

Step2: Analyze "Car color and temperature"

The car color can be chosen (controlled), so it is the independent variable. The temperature inside or around the car is what is measured and is affected by the car - color, so it is the dependent variable.

Step3: Analyze "Tree height and water"

The amount of water given to the tree can be controlled, so water is the independent variable. The height of the tree is what is measured and is affected by the amount of water, so tree height is the dependent variable.

Step4: Analyze "Bananas and blood pressure"

The number of bananas consumed can be controlled, so bananas (or amount of bananas consumed) is the independent variable. Blood pressure is what is measured and is affected by the consumption of bananas, so blood pressure is the dependent variable.

Step5: Analyze "Tire pressure and gas mileage"

Tire pressure can be adjusted (controlled), so tire pressure is the independent variable. Gas mileage is what is measured and is affected by tire pressure, so gas mileage is the dependent variable.

Step6: Analyze "Water absorption (fresh vs. salt)"

The type of water (fresh or salt) can be controlled, so the type of water is the independent variable. Water absorption is what is measured and is affected by the type of water, so water absorption is the dependent variable.

Answer:

Experiment	Independent Variable	Dependent Variable
Tree height and water	Water	Tree height
Bananas and blood pressure	Bananas (amount consumed)	Blood pressure
Tire pressure and gas mileage	Tire pressure	Gas mileage
Water absorption (fresh vs. salt)	Type of water (fresh or salt)	Water absorption