January 30, 2013

As soon as you enter . . .

1. Find your newly ASSIGNED seat.2. In your NOTEBOOK, copy the F.Q. and L.G.’s

on the side board.

You have 4 minutes to complete BOTH tasks QUIETLY for a bonus point.

WHAT ARE THE 4 EARTH SYSTEMS/SPHERES?

WHAT IS DENSITY?

• How close together particles are packed in an object

• Its units are ml or g/cm3

• Size and shape do NOT affect density!!!

WHAT IS THE FORMULA FOR DENSITY?

SAMPLE DENSITY PROBLEM

What is the mass of an object with a volume of 2cm3 and a density of 10 g/cm3?

WHAT IS THE EFFECT OF DENSITY?

• Less dense objects RISE

• More dense objects SINK– Think: “Dense is down”

WHAT AFFECTS DENSITY?

1. State of matter– Most objects are most dense

as SOLIDS– Most objects are least dense

as GASES

2. Water Temperature– WARM water is LESS dense– COLD water is MORE dense

THINK!: Does cold water rise or sink?

WHAT IS THE STATE-OF-MATTER EXCEPTION?

WATER!!!Water is most dense as a liquid and least dense

as a solid.

It is why SOLID ice floats in LIQUID water!!!

WHAT IS RATE OF CHANGE?

• Rate of change = change in value time

• CHANGE what has been altered• CYCLIC CHANGE something predictable that

changes but returns to its original

SAMPLE RATE OF CHANGE PROBLEM

Four minutes after the experiment began, the car moved 800 m. Eight minutes after the experiment began, the

car moved 1,200 m. What was the rate of change?

Rate of change = 1,200 m - 800 m 8 min - 4 min = 400 m 4 min= 100 m/min

GRAPHING RELATIONSHIPS

• Direct relationship– As x increases, y increases

(BOTH INCREASE)

• Inverse/Indirect relationship– As x increases, y decreases(ONE INCREASES, ONE DECREASES)

SAMPLE PROBLEM

Do density and mass have a direct or indirect relationship?

Dynamic Equilibrium: When things are BALANCED

WHAT IS DYNAMIC EQUILIBRIUM?

WHAT IS THE BIG BANG THEORY?

The Big Bang Theory is a

theory about the beginning of the

universe.

WHAT IS THE UNIVERSE?The

UNIVERSE is

everything that exists

—all space, matter and

energy.

WHAT HAPPENED DURING THE BIG BANG?

• 14 billion years ago, all matter and energy was concentrated into an infinitely small point (singularity)

• All of a sudden, there was a gigantic expansion of space (the Big Bang)

WHAT IS THE UNIVERSE DOING NOW?

The universe has been

expanding in all directions ever since

the Big Bang.

UNIT 1 TERMS

1. Rate of Change2. Density3. Big Bang Theory4. Universe5. Direct Relationship6. Inverse/Indirect Relationship7. Dynamic Equilibrium

As you are leaving . . .

1. Throw out any scraps and/or bring any supplies to my desk.

HOMEWORK: Finish flipbook and study for quiz tomorrow!

• It will be given in the first 7 minutes of class• You cannot make it up if you are late without a

note• The quiz will only involve writing the definition

of 5 of the flipbook terms.