4.1 What is Heat
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4.1 What is Heat
Atoms & Molecules
How do particles of matter move?
Atoms & Molecules
How do particles of matter move?
Matter is made of particles called atoms
Atoms & Molecules
How do particles of matter move?
Matter is made of particles called atoms
Molecule – a group of atoms
Atoms & Molecules
How do particles of matter move?
Matter is made of particles called atoms
Molecule – a group of atoms Atoms and molecules move
constantly
Atoms & Molecules
How do particles of matter move?
What is Kinetic energy?
Matter is made of particles called atoms
Molecule – a group of atoms Atoms and molecules move
constantly
Atoms & Molecules
How do particles of matter move?
What is Kinetic energy?
Matter is made of particles called atoms
Molecule – a group of atoms Atoms and molecules move
constantly
The constant motion of atoms is a form of energy
Atoms & Molecules
How do particles of matter move?
What is Kinetic energy?
Matter is made of particles called atoms
Molecule – a group of atoms Atoms and molecules move
constantly
The constant motion of atoms is a form of energy
Kinetic energy – energy of motion
Atoms & Molecules
What is Kinetic energy?
Atoms and molecules move constantly
The constant motion of atoms is a form of energy
Kinetic energy – energy of motion
Faster atoms have more kinetic energy
Atoms & Molecules
Heat & Temperature
Heat & Temperature What is
heat?
Heat & Temperature What is
heat? Form of energy caused by
motion of atoms & molecules
Heat & Temperature What is
heat?
What is temperature?
Form of energy caused by motion of atoms & molecules
Heat & Temperature What is
heat?
What is temperature?
Form of energy caused by motion of atoms & molecules
The measure of the average speed of atoms
Heat & Temperature What is
heat?
What is temperature?
Form of energy caused by motion of atoms & molecules
The measure of the average speed of atoms
• atoms in hot objects move fast
Heat & Temperature What is
heat?
What is temperature?
Form of energy caused by motion of atoms & molecules
The measure of the average speed of atoms
• atoms in hot objects move fast• atoms in cold objects move slowly
Heat & Temperature What is
temperature?
The measure of the average speed of atoms
• atoms in hot objects move fast
• atoms in cold objects move slowly• 98.6 °F = normal body temp.
How is heat transferred?
Heat is a form of energy
How is heat transferred?
Heat can be transferred from one object to another
Heat is a form of energy
How is heat transferred?
Heat can be transferred from one object to another
Heat moves from warmer to cooler objects
Heat is a form of energy
Energy Flow and Heat Loss
Energy Flow and Heat Loss Why is a
light bulb hot?
Energy Flow and Heat Loss Why is a
light bulb hot?
energy for a light bulb comes from electricity
Energy Flow and Heat Loss Why is a
light bulb hot?
energy for a light bulb comes from electricity
Only a small amount of the energy from a light bulb brightens a room
Energy Flow and Heat Loss Why is a
light bulb hot?
energy for a light bulb comes from electricity
Only a small amount of the energy from a light bulb brightens a room
- 2% is actual light energy- 98% is heat energy
Energy Flow and Heat Loss Why is a
light bulb hot?
Heat & cars
energy for a light bulb comes from electricity
Only a small amount of the energy from a light bulb brightens a room
- 2% is actual light energy- 98% is heat energy
Energy Flow and Heat Loss Why is a
light bulb hot?
Heat & cars
energy for a light bulb comes from electricity
Only a small amount of the energy from a light bulb brightens a room
- 2% is actual light energy- 98% is heat energy
Source of energy is gasoline which is made from oil
Energy Flow and Heat Loss Why is a
light bulb hot?
Heat & cars
energy for a light bulb comes from electricity
Only a small amount of the energy from a light bulb brightens a room
- 2% is actual light energy- 98% is heat energy
Source of energy is gasoline which is made from oil
- 20% of the gas is used to move the car
- 80% is given off as heat
Energy Flow and Heat LossHeat & cars
Heat & Fuels
Source of energy is gasoline which is made from oil
- 20% of the gas is used to move the car
- 80% is given off as heat
Energy Flow and Heat LossHeat & cars
Heat & Fuels
Source of energy is gasoline which is made from oil
- 20% of the gas is used to move the car
- 80% is given off as heat
A power plant is a place where electricity is made
Energy Flow and Heat LossHeat & cars
Heat & Fuels
Source of energy is gasoline which is made from oil
- 20% of the gas is used to move the car
- 80% is given off as heat
A power plant is a place where electricity is made
Energy for power plant comes from fossil fuels
Energy Flow and Heat Loss
Heat & Fuels
- 20% of the gas is used to move the car
- 80% is given off as heat
A power plant is a place where electricity is made
Energy for power plant comes from fossil fuels
Fossil fuels are oil, coal, natural gas
Energy Flow and Heat Loss
Heat & Fuels
- 20% of the gas is used to move the car
- 80% is given off as heat
A power plant is a place where electricity is made
Energy for power plant comes from fossil fuels
Fossil fuels are oil, coal, natural gas
Heat is lost at every step when fossil fuel is made into electrictiy
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