Class
Date
Name
Key Concept
En e r
gy
Builder ffi@
LESSON 2
Tra n sfor m ati o n s
Key Concept What is the law of conservation of energy?
Directions:
On each line, write the term ftom the word bqnk that conectly completes each energy transformation
Some terms may be used more than once.
electrical
energy
1. making toast in
radiant
energy
sound
energy
thermal energy
a toaster
€\e.¡o.tct-
changes to
-\P\€eì.\AL
changes to
?+or¡"rJ\
2. watching television
E Te¿Jry.¿,^\
and
ËouÈÞ
3. using
a curling
iron to cu¡l hair
€\.2-<¿s LK--
changes to
-T*-,.2-*,^a.r-
4. turning on a lamp
€\*tçi-\cA\1çç1u+
Directions:
changes to
P+Ð\FNI
(^)
c
and
ft(-
o
o
o
Respond to eøch statement on the lines provided.
5. Describe another example of energy changing form that does not include electrical
energy.
liOt,rr_lStt-.1
Dhr t\ Parr
Ér¡iFrL rc
+ T\64\J-Þ1-
ENeno;n C*¡.1 /'/(rr Bz
îftt,i
I
=.
õ'
o
=
are two statements you can make about energy based on the law of conservation
of energy?
38
õ
€
-l
6. What
þp6za,y
o
-=
A- ¡\¡ ",¡i.¡gre-
<o'.lñ5
r.
Þu=:ûrÒ4z;D
I
gG, Te-A^igEézEGÐ ?'
Ò.@
Tq+.î'tSã;oø-¡'<@.
Energy and Energy Transformations
o
{
f
=
ô
a
E=
õ'
!
Name
Date
Key Concept
En er
gy
Builder
Class
ffi@P
LESSON 2
Tra n sfor m at¡ o n s
Key Concept What is the law of conservation of energy?
I)irections: In the díøgram, a ball has iust been thrown and is about to be caught. Use the diagram to answer
each questíon. Write the letter of the correct stage on the lines provided. Some stages may be used more than once.
At rhe ball's highest point its
kinetic energy is zero and its
potential energy is rnaximum.
ill
Total
energy
o
c.
KEPE
\
!!l¡s,*1"
KEPE
Bc
o
D.
Kinetic energy is
increasing, and potential
enerEy is decreasing.
Kinetic energy is
maximum, and potential
energy rs mtntmum.
Ê
È
A.
o
I
c
o
È
ts
rnaximu,rn,
potential energy
ls ml'nrfnum.
F.
:
'
ì
ö
!
o
I
-É
o
c
U
E.
1. At which
stages is
kinetic energy at the maximum
value? N
anA
L
2. At which stage is the kinetic energy zerc? C
3. Which stage has increasing kinetic energy and decreasing potential energy?
4. At which stage is the potential energy at the maximum value? C
5. At which
stages is
potential energy at its minimur.rZ
Æ and Ø
6. Which stage has decreasing kinetic energy and increasing potential energy?
Energy and Energy Transformations
B
39