Let's begin with a hypothesis:
Where do you think clouds come from?
Remember what we've been learning about air movement and convection cycles, now consider how moisture in the air might be connected to that process.
What are some important safety precautions to take when conducting an experiment, like the one we did together, where fire and pressurized containers are used?
What factor was manipulated in the experiment? (What is the independent variable being tested?)
Did the cloud appear in the experiment when he squeezed the bottle or released the bottle?
Can you think of anything else we could have manipulated or changed to try and form bigger/better clouds?
Which experimental setup represented the negative control group? The one where we didn't expect a cloud to form.
Do condensation nuclei make it harder or easier for clouds to form?
Which of the following could create condensation nuclei?
In the experiment what was used as condensation nuclei?
Watch the following video to help answer questions 12 and 13.
Do clouds form in high or low atmospheric pressure systems?
Conclusion:
Cloud formation occurs when water vapor in the air condenses onto tiny particles known as condensation nuclei.
This condensation process typically happens in conditions of temperatures and pressure.
Mark the places on the rubric that reflects where you are with respect to our learning targets for this lesson.
Observations of bottle with just cold water:
Observations of the bottle with cold water plus the match:
Observations of the bottle with hot water plus the match: