This document outlines the daily plan and activities for a science class. The class will: 1) Complete an investigation on air bags. 2) Watch a video. 3) Discuss how air bags work and take notes. 4) Solve energy and work problems. 5) Answer the question "How do air bags decrease the severity of damage in a car crash?".

1. Good
Morning!
s Today
we
will:
s complete
Investigation
3.3
s watch
a
video
s Please
do
before
the
tardy
bell:
s get
out
your
lab
notebook
&
something
to
write
with
s have
at
least
one
textbook
on
your
desk
s be
sitting
at
a
table
with
at
least
one
other
person
but
no
more
than
two
other
people

3. What
Do
You
See?

4. Investigation
3.3
s Turn
to
the
first
new
page
in
your
lab
book
and
title
this
lab,
“Why
Air
Bags?”
Be
sure
to
make
an
entry
in
your
Table
of
Contents
as
well.

5. Air
Bags
s How
does
an
air
bag
protect
you
during
an
accident?
s Copy
this
question
down
in
your
lab
notebook
and
take
5
minutes
to
jot
down
your
ideas.

6. Air
Bags
s How
does
an
air
bag
protect
you
during
an
accident?
s Now
take
three
minutes
and
share
your
ideas
with
your
table
partner
s If
you
sit
on
an
odd
number
row,
turn
around
and
share
your
ideas
with
the
table
behind
you.

7. Investigation
3.3
s Read
#
1
–
4
in
the
investigation.
s Be
looking
for
three
things:
s materials
you
will
need
s independent
variable
s dependent
variable
s In
your
lab
notebook,
record:
s the
materials
needed
s the
ind
v
s the
dep
v

8. Investigation
3.3
s Now,
read
#
5
–
7
s Be
looking
for:
s what
you
will
be
doing
differently
in
this
part
of
the
lab
s how
you
will
make
measurements
s Go
back
to
your
materials
list
and
add
the
necessary
new
materials

9. Investigation
3.3
s Create
two
data
tables
–
one
for
each
type
of
drop.
Be
sure
to
fully
label
the
tables:
s columns
s rows
s title
s units

10. Energy
and
Work
s Look
over
your
lab
data
and
the
original
question
of
the
lab,
“How
does
an
air
bag
protect
you
in
an
accident?”
s After
completing
the
lab,
is
there
anything
you
can
add
to
your
original
ideas?

11. Good
Afternoon!
s Today
we
will:
s discuss
how
air
bags
work
s take
some
notes
s solve
energy
&
work
problems
s answer
the
question,
“How
do
air
bags
decreases
the
severity
of
damage
in
a
car
crash?”
s Please
do
before
the
tardy
bell:
1. pick
up
a
whiteboard
and
a
dry
erase
marker
2. get
out
your
spiral
and
something
to
write
with
3. get
a
textbook
(your
own,
not
shared)

12. Warm-­‐Up
Part
1
s In
today’s
lesson,
we
are
going
to
be
talking
about
two
physics
concepts
we
talked
about
before
winter
break:
s kinetic
energy
s work
s You
have
three
minutes
to
find
and
write
down
in
your
notes
the
definitions
and
formulas
for
each

13. Warm-­‐Up
Part
2
Drop
Drop
A
Damage
Drop
B
Damage
Height
2
cm
none
none
4
cm
small
1
cm
crack
none
6
cm
2
cm
long
cracks
along
none
bottom
8
cm
3cm
cracks
and
leakage
none
10
cm
-­‐-­‐-­‐
small
1
cm
crack
12
cm
-­‐-­‐-­‐-­‐
2
cm
long
cracks
along
bottom
14
cm
-­‐-­‐-­‐-­‐
3cm
cracks
and
leakage

14. Effect
of
Drop
Height
on
Egg
Damage
3
2
size
of
cracks
(cm)
1
4
8
12
16
drop
height
(cm)

15. Objectives/Goals
s By
the
end
of
the
day,
you
will:
s 1.
Relate
kinetic
energy
to
the
work
required
to
stop
an
object.
s 2.
Understand
the
relationship
between
the
force
of
an
impact
and
the
stopping
distance.
s 3.
Write
a
conclusion
that
uses
scientific
language
to
answer
the
question,
“How
does
cushioning
decrease
the
severity
of
the
damage
in
a
car
crash?”

16. Kinetic
Energy
s Before
winter
break,
we
learned
about
kinetic
energy.
s Review:
What
is
kinetic
energy?
s the
energy
of
a
moving
object
s KE
=
0.5
mv2

17. Kinetic
Energy
Review
s Objects
in
motion
have
kinetic
energy.
s KE
=
½
mv2
s If
mass
is
increased,
what
happens
to
KE?
s it
increases
s If
velocity
is
increased,
what
happens
to
KE?
s it
increases

18. Kinetic
Energy
&
the
Egg
Drop
s True
or
False:
s The
egg
that
dropped
on
the
hard
surface
broke
sooner
because
it
had
more
kinetic
energy.

19. Which
Egg
had
the
greater
KE?
s The
eggs
had
approximately
the
same
mass.
s Both
eggs
were
dropped
from
the
same
height.
s What
do
we
know
about
the
velocity
they
hit
their
respective
surfaces
with?
s because
gravity
acts
on
all
objects
equally,
the
two
eggs
had
the
same
velocity
when
they
struck
their
respective
surfaces

20. Revisit:
Kinetic
Energy
&
the
Egg
Drop
s True
or
False:
s The
egg
that
dropped
on
the
hard
surface
broke
sooner
because
it
had
more
kinetic
energy.
s False
–
the
eggs
have
the
same
kinetic
energy,
so
kinetic
energy
cannot
be
the
reason
one
broke
and
the
other
did
not

21. Which
Egg
had
the
greater
KE?
s The
eggs
had
the
same
kinetic
energy
(when
dropped
from
the
same
height)
s So
why
did
one
egg
break
and
the
other
didn’t?

22. Work
&
Kinetic
Energy
s read
pg
279
–
281
s Focus
Questions:
s What
must
be
done
to
change
the
kinetic
energy
of
an
object?
s What
is
a
safe
way
to
“get
rid
of”
the
kinetic
energy
of
a
car?
s What
is
an
unsafe
way
to
“get
rid
of”
the
kinetic
energy
of
a
car?
s 7
minutes

23. The
Physics
of
Cushioning
s In
order
to
stop
an
object
with
kinetic
energy,
work
is
done.
s Do
you
remember
the
formula
for
work?
s Work
=
force
x
distance
s The
work
done
to
bring
an
object
to
a
stop
is
exactly
equal
to
the
amount
of
kinetic
energy
the
object
has

24. The
Physics
of
Cushioning
s Work
can
also
increase
the
kinetic
energy
an
object
has.
s Whether
work
increases
or
decreases
kinetic
energy
depends
on
the
direction
the
work
is
applied
from
and
the
direction
of
the
object
that
is
moving.

25. The
Physics
of
Cushioning
s Bottom
Line:
s the
amount
of
work
done
on
a
moving
object
is
equal
to
the
object’s
change
in
kinetic
energy
s We
represent
this
relationship
with
a
formula:
s W
=
ΔKE

26. Check
Yourself
s A
rolling
bowling
ball
has
1000
joules
of
kinetic
energy.
After
a
certain
amount
of
work
is
done
to
the
bowling
ball,
it
has
300
J
of
kinetic
energy.
s How
much
work
was
done?
s 700
J

27. Check
Yourself
s Our
first
objective
today
was:
s relate
the
energy
of
a
moving
object
to
the
amount
of
work
needed
to
stop
the
object.
s Explain
to
your
table
partner
how
work
done
on
an
object
and
the
object’s
kinetic
energy
are
related.
s Take
five
minutes
to
write
down
your
ideas
about
the
relationship
in
your
notes.
Be
sure
to
give
a
title!

28. Bringing
an
Object
to
a
Stop
s How
much
work
is
needed
to
stop
an
object
with
3000
joules
of
kinetic
energy?
s 3000
joules
(newton-­‐meters)
of
work
s How
much
work
is
needed
to
stop
an
object
with
1500
joules
of
kinetic
energy?
s 1500
joules
(newton-­‐meters)
of
work

29. Bringing
an
Object
to
a
Stop
s How
much
work
is
done
to
stop
an
object
with
500
joules
of
kinetic
energy?
s If
you
apply
100
N
of
force
to
stop
this
object,
how
far
will
it
travel
before
it
stops?
s Hint:
remember
the
formula
for
work

31. Mathematical
relationship
between
work
and
kinetic
energy
kinetic
energy
force
distance
work
done
500
J
100
N
5
m
500
J
500
J
250
N
2
m
500
J
500
J
500
N
1
m
500
J

32. Mathematical
relationship
between
work
and
kinetic
energy
Draw
this
table
in
your
notes
and
fill
in
the
blanks
kinetic
energy
force
distance
work
done
1000
J
100
N
_____
m
_____
J
_____
J
_____
N
2
m
1000
J
_____
J
250
N
4
m
_____
J

33. Mathematical
relationship
between
work
and
kinetic
energy
Draw
this
table
in
your
notes
and
fill
in
the
blanks
kinetic
energy
force
distance
work
done
1000
J
100
N
10
m
1000
J
1000
J
500
N
2
m
1000
J
1000
J
250
N
4
m
1000
J

34. Check
Yourself
s Look
back
in
you
notes
where
you
jotted
down
your
ideas
about
how
work
and
kinetic
energy
are
related.
s Now
add
specific
mathematical
example
to
your
list?
(Do
your
own
math,
don’t
just
copy
from
the
table!)

35. The
Physics
of
Cushioning
s If
you
look
back
on
the
table
you
just
created,
you’ll
see
that
as
long
as
kinetic
energy
remains
constant,
the
smaller
the
stopping
distance,
the
larger
the
force.
s We
saw
this
in
the
egg
drop
lab:
the
stopping
distance
in
the
flour
was
the
indentation
in
the
flour.

36. The
Physics
of
Cushioning
s re-­‐read
pg
281
in
your
textbook
s focus
on
what
an
air
bag
does
in
a
crash
s 3
minutes

37. The
Physics
of
Cushioning
s An
air
bag
works
by
increasing
the
stopping
distance
of
your
face
and
chest
in
a
car
crash.
s Increased
stopping
distance
means
there
will
be
a
decreased
force.
When
we
are
talking
about
your
face
and
chest,
this
is
a
good
thing.
J

38. Objectives/Goals
s Our
second
objective
today
was:
s demonstrate
an
understanding
about
the
relationship
between
the
force
of
an
impact
and
stopping
distance
s If
the
kinetic
energy
of
two
cars
is
the
same,
and
Car
A
has
1000
N
of
force
applied
and
Car
B
has
3000
N
of
force
applied,
which
car
stops
in
a
shorter
distance?
s Car
B
–
because
it
has
a
greater
force
applied

39. Time
to
Throw
an
Egg!

40. Relationship
between
kinetic
energy,
force
of
impact
and
stopping
distance
s True
or
False
s If
stopping
distance
is
held
constant
and
kinetic
energy
is
increased,
the
force
of
the
impact
will
increase.
s True
–
since
the
change
in
kinetic
energy
is
equal
to
the
work
done
(w
=
fd)
and
distance
is
held
constant,
increasing
the
work
done
(because
kinetic
energy
was
increased)
means
force
will
increase
as
well.

41. Relationship
between
force
of
an
impact
and
stopping
distance
s Copy
down
these
sentences
and
finish
them
in
your
notes:
s If
kinetic
energy
is
held
constant,
the
greater
the
stopping
distance…(what
happens
to
force
of
impact?)
s If
kinetic
energy
is
held
constant,
the
force
of
an
impact
increases
when…
(what
happens
to
stopping
distance?)

42. Relationship
between
force
of
an
impact
and
stopping
distance
s Copy
down
these
sentences
and
finish
them
in
your
notes:
s If
kinetic
energy
is
held
constant,
the
greater
the
stopping
distance…the
less
the
force
of
impact.
s If
kinetic
energy
is
held
constant,
the
force
of
an
impact
increases
when…
the
stopping
distance
is
decreased.

43. Final
Check
Yourself
s The
main
objective
of
this
lesson:
s Write
a
conclusion
that
uses
scientific
language
to
answer
the
question,
“How
does
cushioning
decrease
the
severity
of
the
damage
in
a
car
crash?”

44. How
does
cushioning
decrease
the
severity
of
the
damage
of
a
car
crash?
s On
a
clean,
whole
sheet
of
paper,
copy
down
this
question
and
answer
it
fully
using
scientifically
accurate
language.
s you
may
find
it
helpful
to
create
a
concept
map
or
organize
your
thoughts
with
a
graphic
organizer

45. How
does
cushioning
decrease
the
severity
of
the
damage
of
a
car
crash?
s Proficient
answers
will
include:
s evidence
that
you
can
relate
the
energy
of
a
moving
object
to
the
work
needed
to
stop
the
object
s evidence
that
you
understand
the
relationship
between
the
force
of
an
impact
and
the
stopping
distance
s scientific
language