Energy—Day 10
Materials Needed:
• Writing Utensil
• Folder
• Notebook
Get out your review
handout!
Get out a piece of paper &
put your heading on it
BELL WORK & AGENDA DAY 10

1. What is the formula to calculate kinetic
energy?

2. How does one form of energy get converted
into another form in a cell phone device?


3. A 0.50 kg ball is thrown into the air and rises
to a height of 15 m. How much potential and
kinetic energy did the ball initially have?
Agenda
BLAM
Test over work, power, kinetic &
potential energy, and law of
conservation of energy
Q1: WHAT PROPERTY OF MATTER CAUSES
WAVES TO TRAVEL AT DIFFERENT SPEEDS
THROUGH SOLIDS, LIQUIDS, AND GASES?
A. density
B. color
C. mass
D. size
SC8.2.3.b DOK 1
Q2: WHICH HUMAN BODY SYSTEM
CONTROLS ALL BODY FUNCTIONS?
A.
B.
C.
D.
circulatory system
digestive system
nervous system
urinary system
S.C.8.3.1.d DOK1
MATH BOOSTER DAY 10

If a = - 3 and b = 3, what is the value of
GREEK & LATIN DAY 10
Greek /Latin
meter
axi
goni
leg
oper
Paragraph
OBJECTIVE
DAY 10
1. I will know (knowledge):
the definitions and
concepts of work, power,
and energy.
2. I will be able to (skill):
mathematically solve story
problems for work, power,
and energy.
BELL WORK DAY 10 – ANSWERS #1 & #2
 1.
What is the formula to calculate kinetic
energy?
Answer: Kinetic Energy = ½ mv2
 2. How does the one form of energy get
converted into another form in a cell phone
device?
Answer: The chemical energy of the
battery changes into electrical
energy, which turns the cell phone on.
When we talk on the phone the sound
energy gets converted into electrical
energy, which is transmitted through
the air.
BELL WORK DAY 10 – ANSWER #3

3. A 0.50 kg ball is thrown into the air and rises to a height of 15 m.
How much potential and kinetic energy did the ball initially have?
Answer: Since the ball’s initial stage is at ground
level the potential energy of the ball will be zero.
All the kinetic energy got converted into
gravitational potential energy.
Givens: 0.5 kg = m
15 m = h g = 9.8 m/s2
Unknown: KE & PE
Equation: KE = PE = mgh
Plug in numbers: = (0.5 kg)(9.8 m/s2)(15 m)
= 73.5 joules
Answer:
KE = 73.5 J
PE = 0 J
A1: WHAT PROPERTY OF MATTER CAUSES
WAVES TO TRAVEL AT DIFFERENT SPEEDS
THROUGH SOLIDS, LIQUIDS, AND GASES?
A. density
The less dense that matter is, the farther away the
particles are, and the slower the wave will travel
through it.
B. color
The color of a material has nothing to do with
how fast a wave will travel.
C. mass
The mass of a material has nothing to do with
how fast a wave will travel.
D. size
The size of a material has nothing to do with how
fast a wave will travel
SC8.2.3.b DOK 1
A2: WHICH HUMAN BODY SYSTEM
CONTROLS ALL BODY FUNCTIONS?
circulatory system
The circulatory system contains blood, which
carries nutrients and oxygen to all body parts.
B. digestive system
The digestive system breaks down the food in the
body and uses it for energy.
C. nervous system
The nervous system controls all human body
functions by transferring information to and from
the brain.
D. urinary system
The urinary system cleans and removes waste
from the blood.
A.
S.C.8.3.1.d DOK1
MATH BOOSTER DAY 10 -- ANSWER

=
If a = - 3 and b = 3, what is the value of
=
= -14
INDEPENDENT WORK DAY 10
TEST
DO NOT DO THE FOLLOWING
QUESTIONS:
 Level
2:
8
 16

 Level





3
4
5
6
7
 Level

3:

2
3
4:
1. Read pages # 474 to 475 and answer the
question given below.
-Which has more thermal energy, a
cup of tea or a pitcher of juice?
EXIT QUESTION:
Is there
anything you
could have
done differently
in the energy
unit?