Q.1.8
Question
Identify each activity, a to f, as an observation, a hypothesis, an experiment, or a conclusion. Lucia wants to develop a process for dyeing shirts so that the color will not fade when the shirt is washed. She proceeds with the following activities:
a. Lucia notices that the dye in a design fades when the shirt is washed.
b. Lucia decides that the dye needs something to help it combine with the fabric.
c. She places a spot of dye on each of the four shirts and then places each one separately in water, saltwater, vinegar, and baking soda and water. d. After one hour, all the shirts are removed and washed with a detergent.
e. Lucia notices that the dye has faded on the shirts in water, saltwater, and baking soda, whereas the dye did not fade on the shirt soaked in vinegar.
f. Lucia thinks that the vinegar binds with the dye so it does
not fade when the shirt is washed.
Step-by-Step Solution
Verifieda. Observation
b. Hypothesis
c. Experiment
d. Experiment
e. Observation
f. Conclusion
We need to determine observation, experiment, hypothesis, and conclusion for the given events.
The scientific method is a process that scientists use to make observations to explain natural phenomena. It includes:
- Observation
- Experiment
- Hypothesis
- Conclusion
Observations: It is considered as the first step of the scientific method about what you observe.
Hypothesis: It gives an explanation for an observation.
Experiments: To determine if a hypothesis is true or false, experiments are done to find a relationship between the hypothesis and the observations.
Conclusion/Theory: A conclusion is made after the experiments are analyzed.
a. It is an observation.
b. It is a hypothesis.
c. It is an experiment.
d. It is an experiment.
e. It is an observation.
f. It is a conclusion.