Tuesday, January 5, 2010 - Commack Schools

IntroductionReview Note Cards

Tuesday, January 5, 2010

Introduction

Reference Table Page 1

Much of the information from this chapter is found on Page 1 in the Reference Table


Introduction

Observation

Interaction with the environment with your senses

Taste Smell Touch Hear See Example: This rock is black and shiny


Introduction

Instruments

Makes observations more reliable and accurate. They extend all 5 senses Examples: Ruler, graduated

cylinder, balance, etc.


Introduction

Inference

An interpretation of your observations Can be a conclusion or

explanation Example: This rock formed 10

million years ago


Introduction

Prediction

An inference regarding the future

A weather forecast is an example


Introduction

Classification

To organize data based on observable characteristics or common properties Animals are classified by fur,

feathers, scales, etc.


Introduction

Measurements

Describes observations using numbers Always has a unit

Basic (g, cm, mm, inches) Derived-Combination

(g/cm3, m/hr) Round to the TENTHS place!!!


Introduction

Percent Deviation

Measures how much you messed up a calculation Remember to put Accepted in

Denominator!!!!!!

Diff. b/w Accepted and Measured Value X 100%Accepted Value


Introduction

Graphs Provides the observer a visual

representation of data Direct Indirect Static Cyclic


Introduction

Graphs

Look at the Slope of Line... Steep Slope-Fast Change Gentle Slope-Slow Change


Introduction

Direct

As Independent Variable Increases, Dependent Variable IncreasesAs Latitude Increases, The Altitude of Polaris

Increases


Introduction

Indirect

As Independent Variable increases, Dependent Variable decreasesAs distance decreases between the Earth and Sun,

Gravity Increases between them


Introduction

StaticAs Independent Variable Increases, Dependent Variable

stays the sameDensity stays the same regardless of size and shape of

uniform substance


Introduction

CyclicRepeating PatternTides, Sun Rising and Setting


Introduction

Never Choose This Graph!!!


Introduction

Volume

How much space an object takes up


Introduction

How to determine

VolumeRegular sided objects:

V=L x W x H

Irregular objects: Water Displacement


Introduction

Density

How much material is contained in a certain amount of space

V

M

D


Introduction

Density (more)

D = Mass / Volume V = Mass / Density M = Density x Volume

The more dense something is, the more it is going to weigh...the heavier it will feel


Introduction

Mass vs. Weight

Mass is the amount of matter crammed into an objectWeight is the gravitational pull

on the matter


Introduction

Density and size/shape of object

Regardless of size and shape, substances of same material will have the same density!


Introduction

Water and Density

Most substances are most dense in the solid phase But water is the exception Liquid Water-Most Dense Solid Water (ice)-Middle Density Gas Water (Water Vapor)-Least

Dense


Introduction

Water and Density (more)

Water is most dense in the Liquid phase at 4 degrees C.

Density of water is 1.0g/cm3 Density greater than 1.0 will sink Density less than 1.0 will float


Introduction

Density and Pressure

As Pressure Increases, Density Increases...Direct Relationship


Introduction

Density and Temperature

As Temperature Increases, Density Decreases

Indirect Relationship


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Tuesday, January 5, 2010 - Commack Schools