Do Now:
Focused Free Write
Look at the bottle of
clear solution on my
desk, what do you think
it is? Does it have
ENERGY?
Do Now:
Take a lab from the
Do Now Desk
Get into your
groups from last
time!
Get that data!
Do Now: Copy HW & Lab Pass UP
-Pass up Water Shoe box lab
Monday: No HW
Tuesday: Energy Homework
Wednesday: Energy Transfer Practice
Question in Packet on Page 7
Thursday: Specific Heat WS
Friday: No Homework
Extra Help: Thursday Morning
Unit 1: ENERGY
Stop Monkey-N-ing
around and
Go Green already!
P.S. I’m Mookie the
Monkey
4
What is ENERGY?
Energy is
the ability
to do
Work
_______
5
Work occurs when a
force
_____ causes an
move in
object to _____
the same direction
as the force.
6
FORMS OF ENERGY
Both basic states of energy,
Kinetic and potential, can
exist in many forms!
THERMAL (HEAT)
The totalKinetic
________
energy of the
particles in
matter.
(molecular
motion)
9
SOUND
A type of mechanical
energy. It is the
energy produced
when objects
vibrate
________. Ex: tuning
10
MECHANICAL
Energy with which
moving
______ objects perform
work.
Ex: Wind, flowing water,
using a hammer
11
ELECTRICITY
A form of energy
produced by
themovement
________
ofelectrons
________
12
CHEMICAL
Energy
STORED in
chemicalbonds
____
that can be
released. Ex:
food, fossil
fuels, battery
13
STORED MECHANICAL
ENERGY:
Stored energy due to a
change in the shape
of an object. Ex:
A stretched
rubber band
_______________
14
STORED MECHANICAL
ENERGY:
15
LIGHT
radiant
A form of _______
energy that moves in a
wave
______.
Ex: lamp, stars
16
SOLAR ENERGY
All forms of energy that
SUN
come from the ______.
17
NUCLEAR
Energy
STORED in
nucleus
the ________
(center) of an
atom.
Ex: nuclear bombs
18
GEOTHERMAL (HEAT)
Heat energy STORED
Earth Ex:
within the _____.
Volcanic eruptions,
geysers
19
All forms of energy can
be classified as Kinetic
or potential. The two
basic states of energy.
So, what’s the
difference?
20
POTENTIAL ENERGY
1) Potential energy
is stored energy due
to and object’s
Position
_____________
24
POTENTIAL ENERGY
2) An object that is lifted
from its position on Earth
hasgravitational
__________ potential
Energy which depends on
height and mass
______
25
POTENTIAL ENERGY
3) Massive objects
have more
_____ potential
energy than less
massive objects
26
POTENTIAL ENERGY
4) An object at a higher
elevation will have
more
_____ potential energy
than an object at a lower
elevation
27
Do Now
Pass up procedure for your
signed test
Take out Homework
Complete worksheet on Do
Now desk
KINETIC ENERGY
1) Kinetic is energy
of
___________
Motion
29
KINETIC ENERGY
2) Kinetic depends
MASS
on the
_____ and
theSPEED
_______ of an
object.
30
KINETIC ENERGY
3) Faster objects
have More
____
kinetic energy
than slower
objects.
31
REVIEW QUESTONS:
WHICH SKIIER HAS THE GREATEST
KINETIC ENERGY?
A
B
D
C
WHICH SKIIER HAS THE GREATEST
POTENTIAL ENERGY?
A
B
D
C
ENERGY TRANSFORMATIONS
Do you remember the
LAW OF
CONSERVATION OF
MASS AND
ENERGY?
34
Law of Conservation of
ENERGY: (same for mass)
Can’t be made
Mass/ NRG ____________
Mass/ NRG ______________
Can’t be destroyed
Mass/ Energy can only
__________
Change
form!!!
DURING ENERGY CHANGES,
IF ONE BODYIS LOSING ENERGY,
Gaining ENERGY:
THE OTHER IS _______
THE WAVE LOSES
ENERGY:
THE SAND
GAINS
ENERGY
DURING ENERGY CHANGES,
IF ONE BODYIS LOSING ENERGY
THE OTHER IS GAINING ENERGY:
THE WAVE LOSES
ENERGY:
THE SAND
GAINS
ENERGY
DURING ENERGY CHANGES
THE TOTAL ENERGY
REMAINS THE SAME
ENERGY ALWAYS FLOWS
FROM
HIGH TO LOW (source to sink)
THE ENERGY WILL FLOW FROM:
THE FLAME TO THE
FINGER
ENERGY WILL FLOW FROM
ICE
THE FINGER TO
THE ICE
THE LIQUID
LOSES ENERGY
AS THE
ICE
GAINS ENERGY
WHEN WILL THE EXCHANGE
OF ENERGY STOP?
WHEN
EQUILIBRIUM
IS REACHED
THE LIQUID AND
THE ICE REACH
THE SAME
TEMPERATURE
UNUSABLE ENERGY:
Very often during the energy
transformation process,
some heat
____ energy is
produced due to friction.
This is wasted energy and
is lost to the environment.
43
ENERGY TRANSFORMATIONS
Example: A
television changes
electrical NRG
into light and
sound NRG
44
ENERGY TRANSFORMATIONS
45
Do Now
Turn to page 7 in your note
packet
Take out “Energy HW”
Method’s of NRG transfer
Convection
 1. __________________:
Heated air rises through
earth’s atmosphere.
Conduction
 2. __________________:
An ice cube melts when
dropped into a glass of warm water.
Radiation
 3. __________________:
Light leaves the sun and 8
minutes later strikes earth.
Conduction
 4. __________________:
You burn you tongue eating
hot pizza.
Convection
 5. __________________:
Hot magma rises inside
earth’s mantle, cool, and sinks.
Radiation
 6. __________________:
A microwave oven heats soup.
Convection
 7. __________________:
A fireplace warming a room.
 28
A

 26


 26
26
24
23
26
24
23
24
B
22
25
Methods of
Energy Transfer
Energy moves from
regions of
high
_________
concentration to
________
low
concentrations of
energy.
52
Source
_______
To
sink
_______
There are 3
methods of Energy
Transfer
Radiation
ConDuction
ConVection
ConDuction
Explanation of Transfer
Direct contact
(touch)
Molecule
To Molecule
-Conduction is a form of
heat transfer by
contact of
direct _______
molecules
57
Best Medium for
energy transfer
-Conduction occurs
solids
fastest in _______
58
metals
-_______ are the best
conductors of he
heat energy.
59
Examples
Touching a hot
surface
Electricity
Do Now Take a Conduction
lab & read:
Con ection
Explanation of Transfer
Energy transfer
Due to
Density
differences
-Convection is a form of
heat transfer that
occurs by up and
down motions of a
fluid
_______ due to
differences in ______
density
64
Best Medium for
energy transfer
fluids
-occurs ONLY in _____
which are liquids and
gases!
65
Examples
Hot air or water
rising
Volcanoes
Lava lamp
convection
Radiatio
Explanation of Transfer
Electromagnetic (EM)
waves
that move
Through a vacuum
(empty space)
-radiation is the transfer
waves
of heat in _____.
70
-Electromagnetic
radiation travels at
the speed of ______.
light
71
Best Medium for
energy transfer
No medium
needed
Examples
Gamma
X-rays
UV
Visible
Infrared
Microwave
radio
Do Now: Name that
type of heat
transfer!
Convection!
Conduction!
Radiation!
74
Do Now: Focused Free
Write (No HW tonight)
What is different about
how each of the three
popcorns? How were they
made? Explain!
Do Now: In which direction
does the air move?
 28
A

 26


 26
26
24
23
26
24
23
24
B
22
25
Do Now: In which direction
does the energy move?
 28
A

 26


 26
26
24
23
26
24
23
24
B
22
25
Do Now: What will
heat up faster
1.
Or
2.
Or
3.
Or
HEAT NOTES
1. HEAT: the energy of
particles
moving __________
81
HEAT NOTES
2. HOT OBJECTS
more
contain __________
heat than cold ones
82
HEAT NOTES
3. All objects above
Absolute
zero contain
__________
heat
83
HEAT NOTES
4. Heat always flows
hotter objects
from ______
to ______
cooler objects
until the objects
same
reach _____
temperature.
84
HEAT NOTES
5. The greater the
difference in
temperature between
the two objects, the
faster heat is
_________
transferred.
85
HOW IS HEAT
TRANSFERRED BETWEEN
OBJECTS?
86
Heat Transfer at
Work
Name that type of
heat transfer!
Conduction!
Radiation!
Convection!
88
Do Now
Read the article about Latent
Heat while I set up the Demo
I will collect both labs
tomorrow!
Tomorrow report to large
computer room in the Library
Heat Transfer
across the globe
http://www.classzone.com/b
ooks/earth_science/terc/con
tent/visualizations/es1705/e
s1705page01.cfm
Do Now: HW on Desk
Take a Lab from Do Now desk
Reflect on these two questions:
1) Would it take more energy to
raise 5 g of water 5ºC or 20ºC?
2) Would it take more energy to
raise 5 grams of water 10ºC or
100 grams of water 10ºC
Specific Heat
Quantity of heat
needed to raise
One gram of any
Substance by
1 degree Celsius
Specific Heat
The higher the
Specific heat…
The more energy
is needed to
raise the
temperature
Measuring
Specific Heat
Energy can be measures in
many different ways.
Typical units include:
Joules
____________________,
Watts
_________________,
&
calories
___________________
The term “Joule” is
named after English
Scientist James
Prescott Joule who lived
from 1818 to 1889. He
discovered that Heat is
a type of Energy!
1,000 joules =1 kilojoule
= 1 Btu
Do Now!
Read the did you know and
complete practice questions
1-10!
1. What substance has
the highest specific
heat?Use your
Reference Tables
Liquid water
4.18
Joules/gramºC
2. Why do metals
have low specific
heats?
They are
solid
3. Why are pans made of
metals with low specific
?
heats
Because metals are good
Conductors And have low
specific heats.
Therefore they will heat
up quickly and cook
your food faster.
4. Which would
Take more energy
to raise its
Temperature, water
Or land?
water
5. Which would
Heat up and cool off
Faster, land or water?
land
Water (liquid) = 4.18
Iron (Fe)
= 0.45
Copper (Cu) = 0.38
6. Which of these three
substances will heat up
fastest?
Copper because it has the
lowest specific heat
Do Now:
1) Describe the energy exchange occurs when
liquid water at 0°C turns to ice at 0°C?
a. The water loses energy
b. The air around the water loses energy
c. The ice gains energy.
d. The air and the water both gain energy.
2) As heat energy is added to an open container
of boiling water, the temperature of the
boiling water will..
a. decrease
b. increase
c. remain the same
7. Which material would
require the greatest amount
of heat energy to raise its
temperature from 50C to 100 C?
A.
B.
C.
D.
10
10
10
10
grams
grams
grams
grams
of
of
of
of
granite
ice
lead
iron
8. Which pan would you use
if you wanted to cook your food
quickly?
copper
Cp = 0.38
iron
Cp = 0.45
9. Which material would
require the greatest amount
of heat energy to raise its
temperature from 50C to 100 C?
A.
B.
C.
D.
granite
ice
lead
iron
10. Calculate how many joules would
be required to raise 3 grams of
water from 50 C to 65 C.
3g x15 ˚C x 4.18 J
=188.1j
g˚C
Do Now: Copy HW & Green house
ditto on desk
-Pass up Phase change lab
Monday: Study for exam
Tuesday: Review book read pages 105
to 109 Answer Questions 11-31 on
page 110
Wednesday: Review Book read pages
116 to 118 Questions 39 to 48
on 119
Thursday: Insolation Worksheet
Friday: No HW
Do Now:
Take out review sheet
Do Now: Copy HW & Lab Pass UP
-Pass up signed progress report
Monday: Specific Heat HW
Tuesday: Electromagnetic
Spectrum HW
Wednesday: Electromagnetic
Spectrum WS #1
Thursday: Wave WS & Study
Friday: Quiz Today
Extra Help: Tuesday Morning
Do Now: Focused Free
Write
What is different about
how each of the three
popcorns? How were they
made? Explain!
Do Now:
-Take a lab from the do now desk
-Take out last night’s HW
-Complete the FOCUSED FREE WRITE on
the front page of the lab:
Which spoon would heat up faster when
placed in a bowl of very
hot soup, a wooden spoon
or a metal spoon? Explain
your answer in terms of
specific heat, which spoon
has the lower specific heat and why?
Take out
your
concept
map and
reading
from last
nights
homework
Heat Transfer through
radiation Lab
Find the symbol on the
Top right corner of your Lab.
Time to get in Lab Groups,
Listen for directions..
Directions:
-You will work in groups of four to complete this
Lab.
-If your paper has an “A” in the top right corner,
you and your partner will be monitoring the SAND
AND WATER cups.
-If your paper has a “B” in the top right corner, you
and your partner will be monitoring the BLACK AND
SILVER cans.
-Both groups are responsible for both sets of data
so it is important to communicate to each other.
Make a Prediction
In the space provided on your
lab, predict what which cup will
heat up fastest, the cup of sand
or the cup of water?
Explain your choice!
Make a Prediction
In the space provided on your lab,
predict what which cup will heat up
fastest, the black cup or the silver
cup? Explain your choice!
Prepare to Begin
- One partner is
responsible for turning
on the heat lamp
- The other partner
should take a
temperature reading
for each cup for time
0 in Degrees Celsius
Quick! Record Time 0 for your set up
-
Trade data
Answer this question:
1. Examine the lamp,
what type of
electromagnetic
energy is the lamp
producing?
Two Minute Timer
Quick! Record Time 2 for your set up
-
Trade data
Answer this question:
2.
Define the
word:
specific heat
Two Minute Timer
Quick! Record Time 4 for your set up
-
Trade data
Answer this question:
3. What is the
method of energy
transfer responsible
for the heat
transfer between
the lamp and the
cans?
Two Minute Timer
Quick! Record Time 6 for your set up
-
Trade data
Answer this question:
4. Look at the
data for sand
and water
which cup is
heating up
faster?
Two Minute Timer
Quick! Record Time 8 for your set up
-
Trade data
Answer this question:
5. Note which can is
getting hotter
faster, the black can
or the silver can.
Explain the data in
your own words.
Two Minute Timer
Without disturbing the positions of the cans,
TURN OFF THE LAMP and
MOVE IT AWAY FROM THE
CANS/CUPS
Half Way Done!!!
Quick! Record Time 10 for your set
up
-
Trade data
Answer this question:
6. Note which cup
is hotter: The sand
or the water.
Based on this
compare the
density of the air
over the sand to
the density of the
air over the water.
Two Minute Timer
Quick! Record Time 12 for your set
up
-
Trade data
Answer this question:
7. Explain why the
black can appears
black based on last
nights reading.
Two Minute Timer
Quick! Record Time 14 for your set
up
-
Trade data
Answer this question:
8. Look at the data
for sand and water
which cup is cooling
down up faster?
Two Minute Timer
Quick! Record Time 16 for your set
up
-
Trade data
Answer this question:
9. Relate this
experiment to real
life. What type of
surface on earth
could be
represented the
silver can? The black
can?
Two Minute Timer
Quick! Record Time 18 for your set
up
-
Trade data
Answer this question:
10.
Compare your
answers to questions
6 and 8, complete
this sentence:
“Good Absorbers
are also good…
_______________”
Two Minute Timer
Quick! Record Time 20 for your set up
-
Trade data
Answer this question:
11. Texture also
plays a key role in
the absorption of
heat energy.
Compare a rough
surface and a
smooth surface,
which one will absorb
more energy and
why?
Two Minute Timer
Quick! Record Time 22 for your set up
-
Trade data
Answer this question:
12.
By 3:00 P.M.
on a summer
day would the
air be cooler
over ocean or
land?
Two Minute Timer
Graph your data
before you
answer the
questions!!!!
Conclusion: Write a short paragraph
summarizing your understanding of the
interaction between radiation and
earth’s different surfaces. Use at
least five of vocabulary words of these
vocabulary words: Electromagnetic
spectrum, visible light, prism, ozone,
absorption, reflection, temperature,
specific heat, reradiation, and infrared
radiation.
Do Now: HW on Desk
-Pass up procedure for 3D topo
lab
- Reflect on these two
questions:
1) Would it take more energy to
raise 5 g of water 5ºC or 20ºC?
2) Would it take more energy to
raise 5 grams of water 10ºC or
100 grams of water 10ºC
Do Now:
Calculate the amount of energy in
joules required to raise the
temperature of 5 grams of granite
from 82º C degrees to 100º C
PHASES OF
Matter:
Matter is anything
made of atoms and
molecules.
A) SOLID
B) LIQUID
C) GAS
Solid
Liquid
Gas
Motion
(Kinetic
energy)
Little
K.E.
Molecules
vibrate
More
K.E.
Molecules
move
freely
Most
K.E.
Molecules
move
fast
How is it
bonded?
Does it have Volume?
A definite
shape?
Strong
yes
yes
Not
bonded
rigidly
no
yes
Not
bonded
no
no
What are the changes of phase called?
MELTING
solid
liquid
FREEZING
VAPORIZATION
liquid
gas
CONDENSATION
2. ENERGY IS RELEASED (lost)
DURING:
FREEZING
SOLID
LIQUID
CONDENSATION
LIQUID
GAS
from higher K.E. to lower K.E.
3. ENERGY IS ABSORBED (gained)
DURING:
SOLID
MELTING
LIQUID
VAPORIZATION
LIQUID
GAS
from lower K.ETo higher K.E.
Do Now
-Take out lab, pass up
procedure
Energy stored during a phase
change is called
Latent heat
__________________
No change in
temperature
149
TAKE OUT
YOUR
EARTH
SCIENCE
REFERENCE
TABLES
150
(Earth Science Reference Tables : front page)
Properties of Water
Heating Curve of Water
VAPORIZATION
100
STEAM
temp
0C
0
CONDENSATION
MELT
FREEZE
WATER
ICE
HEAT ENERGY ADDED
(Joules)
Do Now:
-Take out sheet from do now desk
and complete, this replaces
yesterdays there was a typo
-Take out Homework
Problem 1 : Does temperature change
during a phase change? ___________
NO!!!!
Explain:
The energy gained by boiling water or
melting ice is stored as latent heat.
Likewise this latent heat is released to
the environment during condensation
and freezing. This absorbed or
released heat is used to change the
phase not the temperature.
Problem 2: How many Joules of heat
energy must be added to 20 grams of
ice at 0oC to melt it completely to
liquid water at 0oC? Show All work.:
P∆= LH x Mass
P∆= 334J/g x 20g
P∆= 6680 J
3. The most energy is released
during which phase change
condensation
4: The most energy is
absorbed during which phase change:
Vaporization
5. Which phase has the
most K.E.?
GAS (STEAM)
Problem 6: How many joules of heat
(Q) energy must be added to 35 grams
of liquid water to change the
temperature from 10oC to 100oC water
vapor? Is this a phase change problem
or specific heat? Specific Heat (C)
Q= C x Mass x T∆
Q= 4.18J/g°C x 35g x 90°C
Q= 13167 J
Problem 7 : How many joules of heat
energy must be added to 35 grams to
change liquid water at 100oC to water
vapor at 100oC? Is this a phase change
problem or specific heat?
Phase Change (LH)
P∆= LH x Mass
P∆= 2260 J/g x 35g
P∆= 79100 J
Problem 8: How many Joules of heat
energy must be added to 35 grams of
water vapor to change its temperature
from 100oC to 145oC? Show all work. Is
this a phase change problem or specific
heat?
Specific Heat (C)
Q= C x Mass x T∆
Q= 2.00 J/g°C x 35g x 45°C
Q= 3150 J
Problem 9: How many Joules of heat
energy must be added to 35 grams of
ice to change the temperature from
10oC to 145oC water vapor? How many
steps are in this problem? Show All
work.
MELTING / FREEZING
E EARTH SCIENCE REFERENCE TABLE:
Energy is absorbed
+ 334 J/gram
00 C
- 334 J/gram
Energy is released
00 C
VAPORIZATION/
CONDENSATION
Energy is absorbed
+2260 J/g
1000 C
-2260 J/g
Energy is released
1000 C
-Quiz is still Friday… will cover everything up
to the greenhouse effect. More details
tomorrow.
-No lunch club today, sorry!
-Single period exam on Tuesday on Entire
Energy Packet
Do Now
Test is moved to Tuesday
Do Now Worksheet on Desk
Extra-help on Monday after
school
Pass-up Procedure for phase
change lab
Take out Mookie the Monkey
Note-packet
The Earth is always trying
to achieve Equilibrium
Energy is constantly being
re-distributed flowing
from source to sink
The Earth
Receives
Energy
from
two
sources:
SUN
Radioactive
Energy
CORE
All matter radiates
some
Electromagnetic
_____________
Energy
_____________
The sun emits energy
ALL wavelengths
in _____
of the
electromagnetic
spectrum. Read about
the Electromagnetic
Spectrum.
ELECTROMAGNETIC SPECTRUM:
REFERENCE TABLE PAGE 14
10-10
gamma
10-8
10-6
10-4
X ray
10-2
10
0
10
2
10
Microwaves
Ultra
violet
Infrared
Radio waves
Increasingwavelength
ecreasingwavelength
visible
Violet Blue
Green Yellow Orange
Red
4
Each type of energy differs
wavelength
__________
in its
10-10
gamma
10-8
10-6
10-4
X ray
10-2
10
0
10
2
10
Microwaves
Ultra
violet
Infrared
Radio waves
Increasingwavelength
ecreasingwavelength
visible
Violet Blue
Green Yellow Orange
Red
4
Read about Waves!
A wavelength is the distance between
two crests of the wave.
Frequency is defined as a
number of cycles per unit time.
1. Explain the diagram above in no more than 3 sentences: ________________________________
__________________________________________________________________________
__________________________________________________________________________
2. Which types of electromagnetic energy have the greatest and least amount of energy? (Highest
temperatures vs. lowest temperatures)
___________________________________________________________________________________
_______________________________________________________________________________
3. How are the different types of electromagnetic energy distinguished from one another?
___________________________________________________________________________________
_______________________________________________________________________________
4. What types of electromagnetic energy are between Microwaves and X-Rays?
___________________________________________________________________________________
_______________________________________________________________________________
5. Explain how Gamma Rays and X-Rays are different and similar?
___________________________________________________________________________________
_______________________________________________________________________________
6. Why do you think you wear a lead shield when you have an X-Ray?
___________________________________________________________________________________
_______________________________________________________________________________
7. Based on the electromagnetic spectrum why do you think UV rays are dangerous to human health?
___________________________________________________________________________________
_______________________________________________________________________________
The Sun gives off light
VISIBLE
and heat
in the form of
_________________ and
UV
__________________
electromagnetic energy.
However, the short
wavelengths
(dangerous UV
radiation) are mostly GAMMA
absorbed by the ozone
so they don’t reach
OZONE
earth’s surface
The Ozone layer is found
in thestratosphere
_________________
layer of the atmosphere.
10-10
gamma
10-8
10-6
10-4
X ray
10-2
10
0
10
2
10
Microwaves
Ultra
violet
Infrared
Radio waves
Increasingwavelength
ecreasingwavelength
visible
Violet Blue
Green Yellow Orange
Red
4
SHORT
WAVE LENGTHS ARE MOSTLY
ABSORBED by THE OZONE IN
THE STRATOSPHERE
gamma, x-rays,
UV
OZONE
This energy is absorbed
by Earth’s surface, which
in turn reradiates the
energy in the form of
heat called
infrared
________________
radiation
OZONE
VISIBLE LIGHT :
PASSES THROUGH
THE ATMOSPHERE
WITH THE
GREATEST
INTENSITY
Sun emits all
Infrared:
Heat energy that
Earth re-radiates
wavelengths
10-10
gamma
10-8
10-6
10-4
X ray
10-2
10
0
10
2
10
Microwaves
Ultra
violet
Infrared
Radio waves
Increasingwavelength
ecreasingwavelength
visible
Violet Blue
Green Yellow Orange
Red
4
How does too
Much CO2 contribute to
Global warming?
H20
CO2
VAPOR
INFRARED
METHANE GAS
CO2 absorbs
infrared
Do Now: Take a sheet from the
do now desk.
-This is the answer key to the
review packet handed out the
first day of energy
-Focused Free Write:
Is temperature a measure of
heat energy?
Interactions
between
Electromagnetic
Energy & The
Environment:
1. ABSORBTION - UV ABSORBED by
OZONE IN STRATOSPHERE
2&H2O vapor
INFRARED ABSORBED BY CO
methane, nitrous oxide
2. REFLECTION - BY CLOUDS, ICE,
SNOW & WATER
3. SCATTERING - BY AEROSOLS,
WATER DROPLETS, ICE CRYSTALS,
AIR POLLUTANTS, DUST, POLLEN
4.
LIGHT IS BENT AS IT
REFRACTION MOVES THROUGH
VARIED DENSITIES
5. TRANSMISSION WHEN ENERGY
PASSES THROUGH
A MEDIUM
Do Now: Turn to page 15
in your note packet, start
filling in the blanks
1. ABSORPTION
2. REFLECTION
3.SCATTERING
4. REFRACTION
5. TRANSMISSION
Less than
half of the
______
incoming solar
radiation
is received
by the Earth’s
surface
Do Now
Ditto On Do Now Desk
Sit Quietly in your Assigned
seats
Take out HW Worksheet
Smile its Friday!
Surface properties of
the Earth and
Absorption of Energy:
Reflection vs. Absorption & Radiation
Color:
Light (white) reflects
dark (black) absorbs
Texture:
Rough surface absorbs
smooth surface reflects
Absorption
 Good absorbers are also good re-radiators.
 What type of surface is the best absorber?
–Dark
–Rough
Pavement warms before
grassy lawns.
 What type of surface is the best reflector of
radiation?
–Light
–Shiny
–Flat
Snow and Ice reflect
insolation and remain
cold.
ELECTROMAGNETIC SPECTRUM:
LAB
10-10
gamma
10-8
10-6
10-4
X ray
10-2
10
0
10
2
10
Microwaves
Ultra
violet
Infrared
Radio waves
Increasingwavelength
ecreasingwavelength
visible
Violet Blue
Green Yellow Orange
Red
4
Spectroscope
Lab
Do Now on Desk
Aim: Greenhouse Effect
Phase change lab due tomorrow
Review Packet due tomorrow
Energy Exam next Tuesday
Extra Help Today After School
Greenhouse Effect
Short wavelength visible light enters the greenhouse, is
absorbed, then re-radiated as longer wavelength infrared
(heat). The glass traps the infrared.
What is Global Warming?
increase in
An ___________
the Earth’s Average
surface air
temperature
THE GREENHOUSE
EFFECT
204
THE GREENHOUSE
EFFECT
HEAT IS
TRAPPED BY
THE GLASS OF
THE GREENHOUSE
Incoming is
Short wave
Ex: Visible light
outgoing is
Longer wave
Infrared
Energy absorbed
205
Short wave radiation
like ___________
Visible light
passes through the
glass of a greenhouse
and is
absorbed by
_______________
the objects inside the
greenhouse.
206
These objects
reradiate
__________________
the energy as
____________________
infrared
Long Wave Radiation
, which get reflected
back into the greenhouse
and warms the air.
207
In Earth’s atmosphere,
there are many gases
that act like the glass of
a greenhouse and
trap
________
long-wave
radiation, keeping it in
the Earth’s Atmosphere.
These are known as…
208
Greenhouse
Gases!
209
Greenhouse Effect
CO2and H2O absorb infrared
that is re-radiated from the
surface of the Earth.
Therefore, holding that heat
in the atmosphere and
raising the global
temperature.
What are the Greenhouse gases?
H20
METHANE GAS
VAPOR
CO2
INFRARED
Ozone
CFCs
Without some greenhouse
gases, the Earth would
cold
be too _____________
for us to survive. But an
overload of greenhouse
gases creates a problem
as well!
How does too
Much CO2 contribute to
Global warming?
H20
CO2
VAPOR
INFRARED
METHANE GAS
CO2 absorbs
infrared
Greenhouse Effect
What human activities
contribute to CO2 production
and an increase in the
greenhouse effect?
–Burning of fossil fuels
–Global deforestation
If present trends continue
possible effects may include
Rising sea levels due to melting
polar ice caps;
Increasing frequency and
severity of storms and
hurricanes;
More frequent heat waves and
droughts; and
Relocation of major crop
growing areas.
Which of the following best represents
the type of energy
received by the Earth
and the re-emitted by the Earth?
A
B
c
Which of the following best represents
the type of energy
received by the Earth
and the re-emitted by the Earth?
A
B
c
WHICH TYPE OF ENERGY IS
REPRESENTED
BY THE RADIATION AT B?
A) INSOLATION
C) VISIBLE LIGHT
B) ULTRAVIOLET
D) INFRARED ENERGY
B
A
WHICH TYPE OF ENERGY IS
REPRESENTED
BY THE RADIATION AT B?
A) INSOLATION
C) VISIBLE LIGHT
B) ULTRAVIOLET
D) INFRARED ENERGY
B
A
What is a NON-RENEWABLE
RESOURCE?
An energy resource
that is
Being used faster
__________________
than Earth Produces
__________________
it .
___
220
What is a NON-RENEWABLE
RESOURCE?
Examples:
Fossil Fuels, minerals
__________________
221
What is a NON-RENEWABLE
RESOURCE?
To make our nonrenewable resources
last longer we can
Reduce
__________________
Reuse
__________________
Recycle .
_________
222
What is a RENEWABLE
RESOURCE?
An energy resource
that is
Earth supplies faster
__________________
than we use it
__________________
“unlimited”
___.
223
What is a RENEWABLE
RESOURCE?
Examples:
Solar,
wind, biomass
__________________
(trees etc..)
_____________
224
What is a RENEWABLE
RESOURCE?
A renewable resource
produces less
_________
pollution (substance
that can harm living
things and/or the
environment
225
Look at the pie
graph!!!
Only 7% of our energy consumption
is from renewable resources!!! Try
to make little changes in your life
to reduce your dependence on NonRenewable Resources!
What do you plan to do?