Question

designing an experiment
name: teighan
item: water

1. title: the affect of
2. problem/questions: how much water will there be?
3. variables:

• independent variable: time takes to evaporate 3 trials
• level of independent variable
• repeated trials and the sample size
• dependent variable: material added to water
• how will it be measured cm

1. constants: type of water, temperature of room, amount of water
2. hypothesis: if

paragraph:

Explanation:

This is a science experiment design focused on water evaporation. First, we refine the incomplete sections to align with proper experimental structure:

1. The title should clearly link the independent and dependent variables.
2. The problem question should be specific to the experiment's focus.
3. Correct variable assignments: the independent variable is what we change, dependent is what we measure.
4. The hypothesis uses an if-then structure to predict the outcome.
5. The paragraph summarizes the experiment's purpose and plan.

Answer:

1. Title: The Effect of Evaporation Time on Remaining Water Volume
2. Problem/Questions: How does the length of evaporation time affect the volume of remaining water?
3. Variables:

• Independent variable: Evaporation time (levels: 1 hour, 3 hours, 6 hours; repeated trials: 3 trials per time level, sample size = 3)
• Dependent variable: Volume of remaining water (measured in milliliters (mL) using a graduated cylinder)

1. Hypothesis: If evaporation time increases, then the volume of remaining water will decrease, because longer exposure allows more water molecules to escape into the air.
2. Paragraph: This experiment will test how evaporation time impacts the amount of water left. We will start with the same type and volume of water in identical containers, kept at a constant room temperature. We will let the water evaporate for 1, 3, and 6 hour intervals, repeating each interval 3 times. After each interval, we will measure the remaining water volume. We predict that as the evaporation time gets longer, less water will remain in the containers.