Download - Main Idea: What is a Force What is a Force? How do Forces Combine? FORCES ACTING IN THE SAME DIRECTION FORCES ACTING THE OPPOSITE DIRECTION What Happens

Main Idea: What is a Force

What is a Force?How do Forces Combine? FORCES ACTING IN THE SAME DIRECTION

FORCES ACTING THE OPPOSITE DIRECTION

What Happens to an Object When Forces Are Balanced?

What Happens to an Object When Forces are Not Balanced?

MOVING OBJECTS NONMOVING OBJECTS

DIRECTION OF MOVEMENT

Your Completed outline should look like this.

Really Reading Notes• Volunteer Read, pg 169– “Before You Read”– These are the questions you should be able

to answer by the time we finish reading

• Volunteer Read, pg 169– First paragraph of “What is a Force”–What would you underline & why– Nothing• This is to get you thinking about how you have

heard the word “force” used before

Really Reading Notes• Volunteer Read, pg 169– Second paragraph of “What is a Force”–What would you underline?• We’re only asking the question• Do NOT underline anything YET

– I would underline• force is a push or a pull• direction• magnitude• newton • unit

Really Reading Notes• Volunteer Read– Third paragraph of “What is a Force” pg 169–What would you underline?• We’re only asking the question• Do NOT underline anything YET

– I would underline• act on• objects around us• can see

Really Reading Notes• Volunteer Read– Fourth paragraph of “What is a Force” pg 169–What would you underline?– I would underline• can not see

Really Reading Notes• Volunteer Read– Fifth paragraph of “What is a Force” pg 169–What would you underline?– I would underline• when the forces• are balanced• object does not move

Really Reading Notes• Skip 1 line on your sheet of paper

• Mark 3 columns on your paper

• Title the first “What I already know”

• Title the second “Interesting Facts”

• Title the third “What I still don’t Understand”

What Happens to an Object When Forces are Not Balanced?

MOVING OBJECTS

NONMOVING OBJECTS

DIRECTION OF MOVEMENT

What I Already Know

Interesting FactsWhat I Still Don’tUnderstand

Really Reading Notes• How would you use the words you have

underlined on page 169 to make statements about what you have read?

• I would write:– Force is a push or pull with direction and

magnitude– Has units of Newtons– Act on objects around us in ways that we

can and can not see–When the forces are balanced the object

does not move

Really Reading Notes• How would you classify the 1st statement?– Force is a push or pull with direction and

magnitude

• “Already Knew” column?• “Interesting Fact” column?• “Still don’t understand” column?

Really Reading Notes• How would you classify the 2nd

statement?– Has units of Newtons

• “Already Knew” column?

• “Interesting Fact” column?

• “Still don’t understand” column?

Really Reading Notes• Do your columns need to have an equal

number of statements?– No

• Which 2 columns will probably have more?– “Already Know”– “Interesting Facts”

• “Still Don’t Understand” may only have 1 or 2 statements for the whole reading assignment

Really Reading Notes• How would you classify the 3rd statement?– Act on objects around us in ways that we can and

can not see


Really Reading Notes• How would you classify the 4th statement?– When the forces are balanced the object does not

move


Really Reading Notes• From the section ”What is a Force”

• Are there any things that you “Still Don’t Understand” ?

• If there are–Write the statement in this column– I’ll be able to answer the question & help

you learn

Really Reading Notes• Turn to page 170

• Volunteer Read– “How Do Forces Combine”– Underline• more than one force acts on an object• result is• combined effect• net force

Really Reading Notes• How would you use the words you have

underlined in this section to make statements about what you have read?

• more than one force acts on an object• result is• combined effect• net force

• I would write these as:– A net force is when more than one force

acts on an object– The result is a combined effect

Really Reading Notes• How would you classify these statements?– A net force is when more than one force acts on an

object– The result is a combined effect


Really Reading Notes• Those who have already demonstrated

you can make RRN– Have the choice of working independently – Or continuing to work with the group to help

you understand what to do

• Group by tables if you want to

• If you finish early– Do the margin questions for extra credit– Do the questions on page 173 for extra credit

Really Reading Notes• Volunteer Read– “Forces Acting in the Same Direction” pg 170– Underline• forces• in the same direction • add

• Work as a table group – Use the words you have underlined to make

statements about what you have read– I would write:• Forces going in the same direction always add

Really Reading Notes• How would you classify this statement?

• Forces going in the same direction always add

• “Already Knew” column?

• “Interesting Fact” column?

• “Still don’t understand” column?

Really Reading Notes• Volunteer Read– “Forces Acting in the Opposite Directions” pg 170– Underline

• forces• in opposite directions • subtract• direction• net force• same as• the larger force

• Work as a table group – Use the words you have underlined to make

statements about what you have read

Really Reading Notes• How would you classify your statements?– Forces going in opposite directions always

subtract– Net force direction is the same as the larger force


Really Reading Notes• From the section ”How Do Forces

Combine”

• Are there any things that you “Still Don’t Understand” ?

• If there are–Write the statement in this column– I’ll be able to answer the question & help

you learn

Really Reading Notes• Volunteer Read– “What Happens to an Object When Forces

Are Balanced?” pg 171– Underline•not moving•static•balanced forces•act•on•static object•balanced

•no change in •motion•net force is 0N•tension force•pulled or stretched•compression force •pushed or squeezed

Really Reading Notes• Work with your shoulder partner – Use the words you have underlined to make

statements about what you have read

• Then write the statements in the correct column on your RRN paper

Really Reading Notes• For your homework– Complete your RRN for to the end of page

172– Due on Friday, 1/15/10

• For extra credit– Do the Margin Questions – Answer the questions on page 173

Download - Main Idea: What is a Force What is a Force? How do Forces Combine? FORCES ACTING IN THE SAME DIRECTION FORCES ACTING THE OPPOSITE DIRECTION What Happens

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