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Thermal Energy Day 1
Materials Needed:
• Writing Utensil
• Notebook
• Folder
What
is kinetic energy?
What
is the kinetic energy of
an object at absolute zero?
Agenda
Notes and Practice over thermal
energy & process of energy
transfer.
Q1: WAVES WILL TRAVEL THE FASTEST
IN WHICH MATERIAL?
A. solids are fastest
B. gases are fastest
C. liquids are the fastest
D. all materials are the same
SC8.2.3.b DOK 1
Q2: LIGHT FROM AN EXPLODING FIREWORK IS SEEN
AND A MOMENT LATER ITS SOUND IS HEARD. WHICH
OF THESE EXPLAINS WHY THE SOUND AND LIGHT DO
NOT OCCUR AT THE SAME TIME?
A.
Sound travels slower than light.
B.
Sound travels through a vacuum.
C.
C. Light travels slower than sound.
D.
D. Light and sound travel at the
same speed.
SC8.2.3.b DOK 1
MATH BOOSTER DAY 1
A
couple spent ¼ of their money
on a laptop.They bought a bike
for $130 and spent half of what
they paid for the laptop, on
groceries. If they started with
$600, how much was left after
their shopping spree?
GREEK & LATIN
Greek /Latin
Meaning
flex-
bend
tetra-
four
calor-
heat
bi-
two
phon-
sound
What
is kinetic energy?
 The
energy an object has due to its
motion
What
is the kinetic energy of an
object at absolute zero?
 there
is no motion, so there is no
kinetic energy
A1: WAVES WILL TRAVEL THE FASTEST IN
WHICH MATERIAL?
A. solids are fastest
Waves travel fastest through solids
B. gases are fastest
Waves travel slowest through gases.
C. liquids are the fastest
Waves travel faster through liquids than gases
and slower than solids.
D. all materials are the same
Waves traveling though a material are
affected by the material, so they cannot all
be the same.
SC8.2.3.b DOK 1
A2: LIGHT FROM AN EXPLODING FIREWORK IS
SEEN AND A MOMENT LATER ITS SOUND IS HEARD.
WHICH OF THESE EXPLAINS WHY THE SOUND AND
LIGHT DO NOT OCCUR AT THE SAME TIME?
A. Sound travels slower than light.
Sound waves travel slower than light waves.
B. Sound travels through a vacuum.
Sound waves do not travel in a vacuum.
C. Light travels slower than sound.
Sound waves travel slower than light waves.
D. Light and sound travel at the same speed.
Sound waves travel slower than light waves.
SC8.2.3.b DOK 1
MATH BOOSTER DAY 1

¼ of their money = laptop, a bike = $130, half of what
they paid for the laptop = groceries, started with $560

how much was left?

Money spent on laptop = ¼ of $600 = ¼ × 600 = $150

Money spent on the bike = $130

Money spent on groceries = ½ × 150 = $75

Total Money Spent = $150 + $130 + $75 = $355

Money left after shopping = $600 – $355 = $245
I
will know the difference
between temperature and heat.
I will know that thermal energy
depends on different variables.
I will be able to graph
temperature and interpret
temperature differences in
different materials.
Temperature is a
measure of how hot or
cold an object is
compared to a reference
point.
• On
the Celsius scale,
the reference points
are the freezing and
boiling points of
water.
• Absolute
zero is
defined as a
temperature of 0
Kelvin.
Heat
is the transfer of thermal
energy from one object to another
because of a temperature difference.
 In
what direction does heat flow
spontaneously?
From hot objects to cold objects!
As an object heats up, its
particles move faster. This
increases the average kinetic
energy of the particles.
• One
way that heat flows is by the
transfer of energy in collisions.
• On average, high-energy
particles lose energy.Low-energy
particles gain energy.
Temperature – Turn to a partner
What is the relationship
between temperature
and energy?
Answer:
Temperature is related to the
average kinetic energy of the
particles in an object, due to
their random motions through
space.
Thermal
energy is the total
potential energy and kinetic
energy of all the particles in
an object.
Thermal
energy depends on
the mass, temperature, and
phase (solid, liquid, or gas)
of an object.
Thermal
energy depends on mass.
The more mass the more thermal
energy.
A cup of tea and a teapot full of tea
can have the same temperature (the
average kinetic energy of the particles is
the same).However, there is more thermal
energy in the teapot because it contains
more particles.
Thermal
energy depends on temperature.
The higher the temperature the more
thermal energy.
In a cup of hot tea and a cup of cold tea, the tea
has the same mass and number of particles.The
average kinetic energy of particles is higher in
the hot tea, so the hot tea has greater thermal
energy.
Thermal
energy depends on phase.
 Gases have more thermal energy than
liquids, which typically have more thermal
energy than solids.
An ice cube and cup of water have the same
number of particles.The average kinetic
energy of particles is higher in the water, so
the water has greater thermal energy.
Thermal Energy – Class Discussion
A.
B.
The tea is at a higher temperature,
because its particles have a higher
average kinetic energy.
The lemonade has more thermal energy
because it has many more particles.
In which liquid are the water particles
moving faster?
•Thermal expansionis an increase in
the volume of a material due to an
increase in temperature.
•Thermal contraction is a decrease in
the volume of material due to a decrease
in temperature.
Why does the volume change?
• the change occurs when particles of
matter move farther or closer as
temperature increases.
Thermal Energy – Turn to a partner
What happens when a balloon
goes from being in a warm
house to the cold outdoors?
•
As temperature decreases,
the particles that make up the
air inside the balloon move
more slowly.
•
Slower particles collide less
often and exert less force.
•
Gas pressure decreases and
the balloon contracts.
Group Practice
Work in your small group to
complete the worksheet.
Step 1: Create the graph
Step 2: Answer the questions
based on the graph
Step 3: Answer the conceptual
questions.
Assessment Questions
1.
What is the thermal energy of an
object?
a.
b.
c.
d.
the total number of atoms or molecules
the total kinetic energy of the atoms or
molecules
the average kinetic energy of the atoms
or molecules
the average mechanical energy of the
atoms or molecules
Assessment Questions
1.
What is the thermal energy of an
object?
the total number of atoms or molecules
b. the total kinetic energy of the atoms or
molecules
c. the average kinetic energy of the atoms
or molecules
d. the average mechanical energy of the
atoms or molecules
a.
ANS:B
Assessment Questions
2.
What causes a gas to expand when its
temperature is increased?
The number of particles increases as
temperature increases.
b. Each particle expands as its
temperature increases, so the total
volume increases.
c. As temperature increases, more
electrons leave atoms and move
separately.
d. As gas particles move faster, they
overcome some forces of attraction.
a.
Assessment Questions
2.
What causes a gas to expand when its
temperature is increased?
The number of particles increases as
temperature increases.
b. Each particle expands as its
temperature increases, so the total
volume increases.
c. As temperature increases, more
electrons leave atoms and move
separately.
d. As gas particles move faster, they
overcome some forces of attraction.
a.
ANS:D
Assessment Questions
1.
Temperature is the transfer of
thermal energy from one object
to another.
True
False
Assessment Questions
1.
Temperature is the transfer of
thermal energy from one object to
another.
True
False
ANS: F, Heat is the transfer of
thermal energy from one object to
another.
1. What variables affect the
thermal energy of an object?
2. How are temperature and
energy related?
3. What causes thermal
expansion?
Use Physical Science Text Book
Read Page # 479 - 481.
Summarize all text and each
picture/diagram.
 Are
particles located closer together in a solid or a
liquid?
 Would
you be warmer sitting next to a window with
the sun coming in or next to the wall?
 Agenda
Notes over processes of thermal energy
transfer.