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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January 24

Today in Science – Optics

Today we introduced optics and did two experiments.  For the first we created a lab format complete with title, problem, materials, procedure, and hypothesis taking educated guesses about what would happen when we looked at the arrow through a glass of water.  See the video from class below and the similar one found online.

For the second experiment we used ray boxes to create shadow with umbra and penumbra.  We drew and labelled these.

Here is a copy of the work sheet for this from class.

19.01.23 ray diagrams-zls4iy

Then we started watching Bill Nye the Science Guy – Optics

Here is the work sheet from class and the video itself.

19.01.23 bill_nye_light_optics_video_worksheet_with_key (1)-2mxwn89

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