ISN X: WORK, POWER, MACHINES - Mac OS X Serverasato/ISN/isn10.pdf · 2011-05-16 · ISN X: WORK,...

name:_________________________________________________per___ISN X: WORK, POWER, MACHINES

page # Item Check-inCheck-in Point Value

Points Lost

1-2 Table of Contents/Things 2 Know ☜ no check for this ✌ ---------------------☜ no check for this ✌ ---------------------☜ no check for this ✌ ---------------------☜ no check for this ✌ ---------------------

text Reading & Text Questions on 67-73 * 2

3 Eureka Work Video Guide 2

4 Work and Power Worksheet 2

text Reading & Text Questions on 74-75 2

5-6 Lab: Work and Power 35


7 Simple Machines Pre-Test 1

8 Reference: Simple Machines Overview 1

9 EdHeads Simple Machines Interactive Web Site 2


10 Eureka! Simple Machines Notes 1

11 Reference: Three Classes of Lever 1


12 Notes: Mechanical Advantage Calculations 1

13-14 Lab: Mechanical Advantage 26


15-16 Lab: Lego Madness 22

17 Simple Machines Matching 2

text Study Guide on 98-101 4

18 Mind Map 10

19 Parent Signature & date day before quiz 5

*MAke up A,N & I work asap *A = absent N= Not Handed in i= incomplete TOTAL:*MAke up A,N & I work asap *A = absent N= Not Handed in i= incomplete TOTAL:*MAke up A,N & I work asap *A = absent N= Not Handed in i= incomplete TOTAL: 131

If it’s green, it’s biology. If it smells 1 its chemistry. If it doesn’t work its physics.

Parent signature ____________________________________________date_____

Updated Things 2 Know1. SAFETY FIRST!! (lab walk, fragile things, P.A.S.S., etc)2. You are required to have a pencil or erasable pen, ISN with cover, calculator,

ruler, and red or green pen everyday. 3. on-line textbook my.hrw.com, username: nbjh3 password: science4. Satoʼs email address: [email protected]. Matter is anything with mass and volume.6. Matter is made of tiny particles that are always in some motion.7. Matter can exist in several states(or phases), the most common are solid,

liquid, gas and plasma.8. Temperature is how fast the particles are vibrating and ...9. Heat is how many particles there are and how fast they are moving.10. An element is the most basic type of matter that is still unique.11. Atoms are composed of protons, neutrons and electrons.12. The number of protons(atomic number) determines the identity of an element13. Matter is described by its physical and chemical properties.14. The periodic table is organized on several levels, including by: atomic number,

electron configuration, similar properties.15. Elements can bond together to form chemicals other than elements.16. There are three types of bond: ionic, covalent and metallic.17. The valence electrons determine how an substance bonds.18. We studied 4 types of reactions: synthesis, decomposition, single replacement

and double replacement.19. Chemical equations are balanced using coefficients.20. pH levels of acids are less than 7, bases are greater than 7, neutral is 7.21. Polymers are composed of many monomers linked together.22. Speed = Distance÷Time23. Velocity is speed with a direction.24. Slope can be a useful tool to understand information.25. Newtonʼs 1st law: Things do what they are doing unless acted on by

unbalanced force.26. Newtonʼs 2nd law: Force= mass x acceleration27. Newtonʼs 3rd law: every action force has an equal and opposite reaction force.28. Weight is different than mass. Mass units are grams.29. Force is any push or pull. 30. Buoyancy is caused by the weight of the fluid displaced31. Pressure is Force ÷ area


mailto:[email protected]

mailto:[email protected]

Eureka Video Guide: Work

The Story So Far...

1. _____________ refers to how much “stuff”a

thing contains.

2. _____________refers to the rate at which that amount of stuff is being

accelerated towards the earth (or force of gravity)

3.An objectʼs _________________ never varies, but its ______________ can go

up or down depending on the force of ______________ acting on it in various

parts of the universe.

4. The barbell weighs ______________ newtons so it would take

_______________ newtons to hold it up?

5.WORK = ______________ x ________________

6.Work is measured in ___________________ named for James Prescott

_____________

7. How much work is done to lift the barbell 2 m up? Show Work.

8. How much work is done to lift the barbell 1 m up? Show Work.


Wor

k an

d Po

wer

, con

tinu

ed

Copyright © by Holt, Rinehart and Winston. All rights reserved.

80

HO

LTSC

IEN

CE

AN

DTE

CH

NO

LOG

Y

Na

me

Date

Cla

ss

Par

t 2:

Wor

k a

nd

Pow

erW

ork

is c

lose

ly r

elat

ed t

o th

e co

nce

pt

of p

ower

. Pow

eris

a m

easu

re o

f h

ow m

uch

wor

kis

don

e in

a c

erta

in t

ime.

Th

e fa

ster

wor

k is

don

e, t

he

mor

e p

ower

is

pro

du

ced

.

EQU

AT

ION

:p

ower

! P!

Th

e un

it f

or p

ower

is

the watt

(W

).O

ne

wat

t (W

) is

equ

al t

o 1 J

of w

ork

don

e for

1 se

c-on

d.

Use

th

e d

ata

give

n in

th

e d

iagr

am b

elow

to

det

erm

ine

how

mu

ch w

ork

and

pow

erar

e in

volv

ed in

eac

h s

tep

. R

emem

ber

to s

how

you

r w

ork.

Ch

alle

nge

You

rsel

f!4.

A cra

ne

lift

s a

load

of

stee

l th

at w

eigh

s 9.

3"

105

N a

dis

tan

ce o

f 10

0 m

. It

tak

es 5

min

ute

s to

com

ple

te t

he

task

.

a.H

ow m

uch

wor

k is

don

e by

th

e cr

ane?

b.H

ow m

uch

pow

er d

oes

the

cran

e pro

du

ce?W # tw

ork

# time

Step

1: A

50

N g

irl

clim

bs t

he

flig

ht

of

stairs

in

3 s

econ

ds.

Work

!

Pow

er !

Step

2: Th

e girl

lifts

a p

ainti

ng

to a

hei

ght

of

0.5

m in

0.7

5 se

con

ds.

Work

!

Pow

er!

Step

3: Th

e girl

cli

mbs

th

e la

dd

er w

ith

the

pai

nti

ng

in 5

sec

on

ds.

Work

!

Pow

er!

He

igh

t o

fla

dd

er

= 2

m

Forc

e n

ece

ssary t

o

lift

pa

intin

g =

60

N

He

igh

t o

fst

airs

= 3

m

Work and

Pow

erM

AT

H I

N S

CIE

NC

E:

PH

YS

ICA

LS

CIE

NC

E

WO

RK

SHEE

T

51

Copyright © by Holt, Rinehart and Winston. All rights reserved.

MAT

HSK

ILLS

FOR

SCIE

NC

E79

MATHINSCIENCE: PHYSICAL SCIENCE !!!

Na

me

Date

Cla

ss

Use

the eq

uatio

ns fo

r work

and

power

.P

art

1:A

n E

qu

atio

n f

or W

ork

As

you

sit

an

d r

ead

th

is w

orks

hee

t, are

you

doi

ng

wor

k? Y

ou m

ight

say,

“Ye

s, o

f co

urs

e.”

But

are

you

doi

ng

wor

k in

th

e sc

ienti

fic

sen

se? Sc

ienti

sts

use

th

e w

ord

work

to d

escr

ibe

ave

ry s

pec

ific

con

cept.

In

ph

ysic

s, w

ork

is

a forc

e ap

pli

ed o

ver

a d

ista

nce

.

EQU

AT

ION

:w

ork

!Fo

rce

"d

ista

nce

W!

F"

d

Th

e SI

un

it f

or w

ork

is t

he

new

ton-m

eter

(N

#m

), a

lso

know

n a

s a jo

ule

(J)

.Yo

u c

anca

lcu

late

th

e am

ount

of w

ork

acco

mp

lish

ed w

ith

th

e eq

uat

ion

abo

ve. Le

t’s s

ee h

ow it’s

don

e! SAM

PLE

PR

OB

LEM

: H

ow

mu

ch w

ork

is

don

e on

a 1

6 N

sac

k o

f p

ota

toes

wh

enyo

u l

ift

the

sack

1.5

m?

W!

16

N"

1.5

mW

!24J

Wor

k I

t O

ut!

Bas

ed o

n w

hat

you

kn

ow a

bout

wor

k, a

nsw

er t

he

foll

owin

g qu

esti

ons.

Be

sure

to

show

your

wor

k.

1.A

defl

ated

hot-a

ir b

allo

on w

eigh

s a

tota

l of

800

0 N

. Fi

lled

wit

h h

ot a

ir, th

e ba

lloo

nri

ses

to a

hei

ght

of 1

000

m.

How

mu

ch w

ork

is a

ccom

pli

shed

by

the

hot

air?

2.A

rop

e is

thro

wn

ove

r a

beam

, an

d o

ne

end

is

tied

to

a 30

0 N

bun

dle

of

lum

ber. Yo

upu

ll t

he

free

en

d o

f th

e ro

pe

2 m

wit

h a

for

ce o

f 40

0 N

to

lift

th

e lu

mbe

r of

f th

egr

oun

d.

How

mu

ch w

ork

hav

e yo

u d

one?

3.A

150

N b

oy r

ides

a 6

0 N

bic

ycle

a t

otal

of

200

m a

t a

con

stan

t sp

eed

. Th

e fr

icti

onal

forc

e ag

ain

st t

he

forw

ard

mot

ion

of th

e bi

cycl

e eq

ual

s 35

N.

How

mu

ch w

ork

doe

sth

e bo

y d

o? E

xpla

in y

our

answ

er.

(Hin

t: R

emem

ber

that

wor

k is

on

ly d

one

wh

en t

he

mot

ion

is

in t

he

sam

e d

irec

tion

th

at t

he

forc

e is

app

lied

.)

MA

TH

SK

ILLS

US

ED

Ad

dit

ion

Mu

ltip

licat

ion

Div

isio

nD

ecim

als

Sci

en

tifi

c N

ota

tio

n


Graded by: ___________________________________________________________________ score:______

LAB: Work & PowerPURPOSES๏ to describe power and its

measurements๏ to explain the units of power๏ to calculate power, work, and time using

the formulas

HYPOTHESIS(4 pts)

---------------------------------------------

---------------------------------------------

--------------------------------------------------------------------------------------------

--------------------------------------------------------------------------------------------

--------------------------------------------------------------------------------------------

MATERIALS! Stopwatch, meter stick, pencil,calculator

PROCEDURES round all to 0.01, include the correct UNITS for each

DATA TABLE (2 pts each box):

1. Determine your weight in newtons, this will be the force(Multiply your weight in pounds by 4.5.)

2. Determine how many seconds it takes you to walk up a flight of stairs.

3. Determine how many seconds it takes you to

walk up a flight of stairs backwards

4. Determine how many seconds it takes you to run up the flight of stairs (no skipping steps).

5. Determine how many seconds it takes you to run up the flight of stairs (skipping allowed)

6. Determine the vertical height of the stairs in meters

work = force x distance power= work ÷ time


7. Determine how much work was done to walk up the stairs.

8. Determine how much work was done to walk up the stairs backwards.

9. Determine how much work was done to run up the stairs.

10.Determine how much work was done to run up the stairs with skipping.

11.Determine how much power was produced to walk up the stairs.

12.Determine how much power was produced to walk up the stairs backwards.

13.Determine how much power was produced to run up the stairs.

14.Determine how much power was produced to run up the stairs with skipping.

Questions(complete sentences):

1. Why was work the same for all tests? 1pt

2. When did you produce the most power and why? 2pts


C

opyr

ight

20

03

Wri

te th

e na

me

of th

e sim

ple

mac

hine

that

is d

escr

ibed

in th

e se

nten

ces b

elow

: W

ord

Bank

:

Wed

ge

| G

ear

|

Whe

el a

nd A

xle

|

Scre

w

| P

ulle

y |

In

clin

ed P

lane

|

Leve

r Th

ese

two

parts

act

as o

ne si

mpl

e m

achi

ne.

They

roll

and

are

foun

d on

car

s, bi

kes a

nd

whe

elba

rrow

s. _

____

____

____

___

A

rope

, a w

heel

with

a g

roov

e in

it a

nd a

wei

ght m

ake

up th

is sim

ple

mac

hine

. Y

ou c

an

pull

dow

n on

the

rope

to li

ft th

e w

eigh

t. _

____

____

____

____

_ Th

is sim

ple

mac

hine

can

be

used

to li

ft a

wei

ght.

It h

as a

fulc

rum

, or p

ivot

poi

nt, w

hich

ca

n be

loca

ted

in th

e ce

nter

, nea

r the

end

or a

t the

end

of t

his s

impl

e m

achi

ne.

____

____

____

____

Th

ese

simpl

e m

achi

nes a

re w

heel

s with

teet

h on

them

that

fit t

oget

her w

hen

the

simpl

e m

achi

nes

are

turn

ed.

Thes

e sim

ple

mac

hine

s ar

e us

ed to

incr

ease

or d

ecre

ase

turn

ing

pow

er b

y ch

angi

ng th

eir s

ize.

___

____

____

____

____

_ Th

is sim

ple

mac

hine

can

be

used

to sp

lit th

ings

apa

rt or

hol

d a

door

ope

n.

____

____

____

___

Exam

ples

of t

his s

impl

e m

achi

ne a

re u

sed

to h

old

thin

gs to

geth

er.

It is

mad

e up

of a

n in

clin

ed p

lane

wra

pped

aro

und

a cy

linde

r. _

____

____

____

____

____

___

A h

eavy

obj

ect c

ould

be

rolle

d up

this

simpl

e m

achi

ne, i

nste

ad o

f lift

ing

it str

aigh

t up.

U

sing

this

simpl

e m

achi

ne c

an sa

ve e

ffort,

alth

ough

the

obje

ct m

ust u

sual

ly c

over

mor

e di

stanc

e if

this

simpl

e m

achi

ne is

use

d. _

____

____

____

____

____

__

C

opyr

ight

20

03

Sim

ple

Mac

hine

s Pre

-Tes

t Y

our N

ame

____

____

____

____

___

Teac

her’s

nam

e __

____

____

____

____

___

Wri

te th

e le

tter

of th

e pi

ctur

e be

low

nex

t to

the

nam

e of

the

simpl

e m

achi

ne it

m

atch

es.

A.

__

___

Pul

ley

____

_ G

ear

B.

____

_ W

heel

and

axl

e C.

____

_ W

edge

__

___

Incl

ined

pla

ne

D.

____

_ L

ever

E.

__

___

Scr

ew

F.

G.


Simple Machines Overview


Use the EdHeads Link on Mr. Satoʼs Links Page

Circle One Kitchen or GarageCircle One Kitchen or GarageCircle One Kitchen or Garage

Object Machine(s)Machine(s)

1

2

3

4

5

6

7

8

9

10

Circle One Bedroom or BathroomCircle One Bedroom or BathroomCircle One Bedroom or Bathroom

Object Machine(s)Machine(s)

1

2

3

4

5

6

7

8

9

10


Eureka! Simple Machines

(inclined plane, lever, pulley)

1. When you use a machine to use less

force you must increase the

___________________ that you

apply the force.

2.Machines allow you to use less energy. True or False

3.The sloping flat thing is called an _________________________.

4.The pivot point on a lever is called the ____________________.

5.The name of the “teeter-totter” simple machine is a _________________.

6.The principle of the lever states “the longer the arm of the lever to which

force is applied the less that ______________ need be.

7.Mechanical advantage can be determined by dividing the __________ force

by the ___________ force.

8.Pulleys that stay in one place are called _________________ and those that

change position are called _____________________.


THREE CLASSES OF LEVERS


Notes on Mechanical Advantage


Graded by:_____________________________________________________________

LAB: Mechanical Advantage score:Purpose (1pt):

Information (1pt):

Materials: Legos, scale, ruler, calculator

Build Simple Machines Completed?

A(1 pt)

Inclined plane with a mechanical advantage of 5.

height=______ hyp. length= ________ MA=_______

B(1pt)

Inclined plane with a mechanical advantage of 40.

height=______ hyp. length= ________ MA=_______

C(1pt)

Lever with a mechanical advantage of 2.

Input Dist. =_____ Output Dist.= _______ MA=______

D(1pt)

Lever with a mechanical advantage of 10.


E(1pt)

Lever with a mechanical advantage of 0.1


F(1pt) What is the MA of the Pulley System? MA=_________

G (2pt)

Build a lever with the most MA possible (must be >10)


H (2pt)

What is the weight of the load? ____________(round to 0.1, minus 1 pt if you ask Mr. Sato how to do this)

Questions: SHOW WORK (round to 1st significant figure, ex: 0.0154 becomes 0.02)

1.How much force would be needed to push(input force) the load(output force) up your inclined plane in build A(use MA=5)? (2pt)

answer:________________

Show work


2. How much force would be needed to push the load up your inclined plane in build B? (use MA=40) (2pt)

answer:________________

3. How much input force would be needed to lift the load up with your lever in build C? (use MA=2) (2pt)

answer:________________

4. How much input force would be needed to lift the load up with your lever in build D? (use MA=10)(2pt)

answer:________________

5. How much input force would be needed to lift the load up with your lever in build E? use MA=0.1)(2pt)

answer:________________

6. How much input force would be needed to move our red load up with the pulley system? (2pt)

answer:________________

7. How would you set up to lift a load with the least amount of input force?, draw a picture or explain with words. (2pt)

Fulcrum

Load

Bar

Input Force

Draw or explain

Show work

Show work

Show work

Show work

Show work


Graded by:________________________________________________________

LEGO Madness score: ____/22

Card Number Point value Type(s) of Machine(s) Completed?

open 2 1st class lever, MA=4

open 2 2nd class lever, MA = 2

open 2 3rd Class lever, MA = 0.5

open 2 wheel and axle

open 2 Inclined Plane with height of 5 cm and a

MA= 4

open 4 fixed pulley

open 4 movable pulley

6 back top 1

6 back bottom

1

7 inside top or bottom

1

7 back 3

8 inside to #5 1

8 back 1

9 inside to #6 1


Card Number Point value Type(s) of Machine(s) Completed?

9 back 6

10 back top 1

10 back bottom

1

11 inside 1

11 back 1

12 back 1

13 inside to #6

1

13 back 4

14 back 3

15 inside to #6

1

15 back 1

16 inside to #6

2

16 Back 3

17 inside to #6

2

18 inside to #5

1

18 back 2

19 back 3


Mind Map

Use Word Processing and the following terms to create a concept map: machine, mechanical advantage, lever, input force, output force, work


ISN X: WORK, POWER, MACHINES - Mac OS X Serverasato/ISN/isn10.pdf · 2011-05-16 · ISN X: WORK,...

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Transcript of ISN X: WORK, POWER, MACHINES - Mac OS X Serverasato/ISN/isn10.pdf · 2011-05-16 · ISN X: WORK,...