Density Demos 2014-2015. Density Objective: Observe that density is a physical property of matter by predicting behaviors of substances.

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Presentation transcript:

Density Demos

Density Objective: Observe that density is a physical property of matter by predicting behaviors of substances.

Demo #1 – Super Stackers Why do these three liquids form layers rather than mixing?

Demo #2 – Rainbows of Fun Two bottles: One warm, one cold. What happens when we put the warm on top of the cold? What happens when we put the cold on top of the warm? Colorful Convection Currents

Demo #3 – Hot Air Balloon A bag full of room temperature air is heated with a hair dryer. What will happen to the bag? Missed Class? Try it at home!

Activity:Sink or Float? 1. Your group has been given 5 unique items. Make a prediction if each item will sink or float in a bin of fresh water. Record your predictions in Data Table #1. 2. Make a prediction if each item will sink or float in a bin of salt water. Write it in data table #2 on the next page. 3. After you have made your predictions, bring your items to the TEST AREA. 4. Test the five items (one at a time) in the bin of water. Observe what happens and record your findings in data table 1. Be specific about how each item sinks or floats. (fast, slow, etc)

Form an explanation

What is density?

Extra Density Stuff! Missed Class? Check out these videos for some more density fun! Missed class? Watch a Youtube version of this ice cube experiment!