Friday, January 29, 2010

Physical science window pane terms for Wednesday

PHYSICAL SCIENCE TERMS:

Window pane terms for physical science- second list- chapter 1
(I’m reducing the amount you have to do to 15, I think the vocabulary is a little less intense in physical science than it is in Biology, so this is a permanent reduction to 15 terms a week).
*****remember to simplify the definitions- the examples are for your benefit, you are not expected to include them on the notecards.--- HAVE A GREAT WEEKEND AND “ LET IT SNOW, LET IT SNOW, LET IT SNOW”
1. standard- the exact amount people use to compare measurements.
2. SI units- these are the base units or standards used to measure different types of substances. (SI literally stands for Le Systeme Internationale d’Unites that’s French for international system of units). Ex. Meter, Gram, Liter, Second, Kelvin
3. Converting- when you change the units you have measured or obtained into different units, ex. Going from grams to kilograms.
4. Volume- the amount of space occupied by an object .
5. Mass- a measurement of the amount of matter in an object.
6. Density- is the mass of an object within a given space (volume). Explanation: a feather pillow in a normal pillow case is less dense than the same pillow that has been vacuum sealed in a plastic bag simply because it takes up less space but has the same mass! Sit with that one for a while!!!
7. Celsius scale- measures temperature using O degrees as the Freezing point of water and 100 degrees as the boiling point of water, your normal body temp. in Celsius would be 37 degrees.
8. Kelvin- the temperature scale used as the SI unit of measuring temperature. It uses the coldest temperature known as O degrees Kelvin- we call this “absolute zero” (in Celsius it would be -273 degrees , now that’s cold!!!
9. Line graph- a way to visually represent information that shows a change in one variable (dependent variable) as a result of the change of another variable (independent variable).
10. Bar graph- this is used to compare different amounts of items in different situations. We use this a lot when we compare EOC scores at the end of a semester – the different schools would be on one axis and the bars representing the number of students who are proficient would be on the other axis ( the bottom).
11. Circle graph – also known as a pie chart, shows how an overall quantity is broken down into smaller pieces. A home income can be broken down by monthly bills or other expenses.
12. Bias- when someone’s personal experience or feelings affects how data is collected and/or understood.
13. Technology- when science is used to help people.
14. Model- a representation of an idea, event or object that is used to increase a persons understanding of that idea, event or object.
15. Conclusion- after you analyze your data from an experiment you have to make a decision as to whether or not this data supports or disproves your hypothesis- this is your conclusion>