October 30

Create a mini lab for the experiment below.  The title for this experiment is “How Water Vs Cold Water Convection”.

Now that you have completed observing the experiment you should watch this video prior to completing your conclusion.

 

 

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October 29

Science – Explaining Air Pressure

Today we are discussing air pressure.  We will be observing a few demonstrations and then attempting to explain the Science behind them.

First: review the video below that we tried a few weeks ago.  Do you remember how to explain it?

Second: Take a look at the expanding air experiment below.  But, be sure that you have your mini-lab ready first.  This means that you need to have a piece of lined paper with the date, your name, Science, and Mr. Ewert in the top right hand corner.  The title is “Balloon and Bottle Experiment”.  You need to have the question, “what will happen to the bottle with the balloon on it when the bottle is heated?”.  For materials and procedure just write, “see class blog post”.  Make absolute sure that your hypothesis is detailed and completed before watching the video.

Third: Complete a mini lab for the final demonstration.  This one is called “Egg and Bottle Experiment”.

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October 28

Change of State and the Heating Curve

Today we boiled water and took temperature readings each minute to observe how the two interact.  When we graphed our results we found that there is a “curve” whenever there is a change of state.  See our results below and watch the video that explain this concept.

Here is a copy of the assignment in class.  Attach this to your existing formal lab.  Use your lab template if you need.

19.10.23 change of state and the heating curve

Here are all our results

19.10.24 change of state heating curve results

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May 27

Fluids – Mini Labs

Cartesian Diver

Assignment: complete an exit slip that answers the question, “Why does the dropper sink when the bottle is squeezed and then rise when the bottle is released?”

Can an egg float in Water?

Assignment: complete an exit slip that answers the question, “Why does one egg sink, one hover in the middle, and one float?”

Students are to complete both exit slips, attach a rubric provided in class and submit into the Science folders.

 

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May 14

Air Pressure VS Gravity Pull

Today we are discussing air pressure vs the pull of gravity.  We are looking at an experiment where a bottle of water has holes poked into it, predicting what will happen and then scientifically explaining the results.

The first experiment is to fill a bottle with water, put on the cap, put a hole in the side with a pin, and then pull out the pin.  What do you think will happen and why do you think that will happen?

The second experiment is to take the bottle and put 3 holes in it in a row from top to bottom.  What will happen when we pull the pins out?  What happened? Explain.

Students are completing mini labs for this with this structure:

title, problem, materials, hypothesis, result/observation, conclusion.

This is being submitted as one assignment (2 mini-labs), is an in-class assignment, and will be submitted no later than the following day.

NOTE: you should ask Mr. Ewert to show you some of the diagrams that were used in class to explain what we observed in the labs.

 

…and here is another fun video of this concept.

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February 13

Mythbusters – Archimedes Death Ray – Optics – Science

Today we are watching some Mythbusters and looking specifically at how Archimedes attempted to make a death ray using soldier’s shields as reflective surfaces.  Do you think it is possible to use the reflected sun as a weapon?  Check out the worksheet from class and the episode below. Note: The video watched in class was regular speed and streamed from discovery education (which requires further passwords).  However, the video below also has the segments covered in this lesson (but you have to skip through a bit).

19.01.23 mythbusters – myth of the death ray – questions and exit slip-1s782gx

 

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