Saturday, March 28, 2009

Pendulum Lab

Pendulum Lab online models. In case you are absent your assignment is to create a data table, pick a variable, change it and see how it affects the period of a pendulum.

The period of pendulum is the time it takes the pendulum to go back and forth....

Online Pendulum Models:
http://www.myphysicslab.com/pendulum1.html

http://www.materialworlds.com/sims/Pendulum/netscape.html

Design your own experiment:

The first Monday we get back we'll be working on designing our own experiment.

Problem Statements; Make your own (be sure it is testable) or choose one from the list below.
Does the density of a liquid affect the boiling point of the liquid?
Does the salinity of a liquid affect the boiling point of the liquid?
Does carbonated soda pop really erode teeth?
Does the density of a liquid affect the freezing point of the liquid?
Does the starting temperature affect the boiling rate of a liquid?
Does the viscosity of a liquid affect its boiling point?
Does the temperature of a liquid affect its density?
Does the temperature of a solid affect its density?
How does temperature affect the volume of a liquid?
How does temperature affect the volume of a solid?
Does the size of a magnet affect the strength of the magnet?
Does the density of a magnet affect the strength of the magnet?
Does the amount of coils, or the amount of power, in an electromagnet affect strength the most?
Does the color of a liquid affect the refraction of light?
Does the density of a liquid affect the refraction of light?
How does height affect the potential energy of a ball?
How does the mass of an object affect the force of the object?
How does resistance affect and electrical circuit?
How does voltage affect an electrical circuit?
Does the size (gauge or diameter) of a wire affect the flow of electricity?
Does the length of a wire affect the flow of electricity?
Does the hardness of a mineral affect its density?
How does the volume of a ball affect its force?
How does the mass of a ball affect its force?
How does the elasticity of a ball affect its bounce height?
How does the size of a ball affect its bounce height?
How does the surface of a ball affect its ability to roll?
How does the mass of a ball affect its rolling distance?
How does the volume of a ball affect its rolling distance?
How does adding a solute affect the boiling point of a liquid?
Does the amount of solute affect boiling rate of a solution?
Does the pH of a liquid affect its boiling/freezing point?
Does the pH of a liquid affect its evaporation rate?
Does the size of a mineral affect its density?
How does pressure affect the volume of a gas (or liquid)?
How does pressure affect the temperature of a gas (or liquid)?
How does temperature affect the volume of a gas (or liquid)?
How does temperature affect the pressure of a gas (or liquid)?
How does temperature affect the density of water?
How does salinity affect the density of water?

Wednesday, March 18, 2009

We;re a bit behind the calendar y'all

Hi all,
We are a bit behind our own calendar. I've overbooked us for things to do... but the good news is we are catching up, getting organized. You have a large homework assignment for the break. Please finish that and check the printout at school for missing assignments.
Enjoy your break
Nina

Wednesday, March 4, 2009

Forks, Forks, Where did they go

Forks, forks, where did they go????

Our school has a problem. The forks dissapear. They just go away. We find them in the ceiling. We find them in the classrooms, but golly.... really... how silly is that. Now the reason we spend so much money buying metal forks is because plastic forks cause SO MUCH GARBAGE!!! The alternatives are biodegradable forks.

Our class wonders how do the biodegradable forks work?