Transcript Heat on the Move

Today’s Agenda…11/14
 Bellringer: Heat and Temperature
Warm-Up
 Turn in worksheet – Heat on the Move
 Notes on Heat Transfer
 Homework: Worksheet
Heat and Temperature
Bellringer
 Respond to the following questions. You DO NOT
have to write the questions.
 What kind of energy do the particles in
substances have?
 Why do they have that kind of energy?
 What will cause this energy to increase?
 How does heat move between
substances? Give one example.
Energy (Heat) Transfer
Study Pack #6
Today’s goals…
 I can continue to describe how heat is
transferred
 I can compare conduction, convection,
and radiation.
Heat Transfer
 Heat will move when there is a difference in
temperatures
 Heat will ALWAYS move from the warmer
object to the cooler one
 Heat can be transferred (move) in three
ways:

Conduction
 Convection
 Radiation
Conduction
 Transfer of heat through collisions
between atoms in a substance
 The kinetic energy of the substances is
transferred
 Heat transfer by direct contact
Conduction
 Usually occurs in solids
 Examples:
 Burning
your hand on a stove
 Feeling warm sand on your feet at the
beach
Conduction
 Materials through which it is easy to
transfer heat are called conductors
 Metals
 Materials that are poor conductors are
called insulators
 Plastic
Convection
 Usually occurs in liquids and gases
 As particles warm, they spread out and
become less dense
 These particles rise, while cooler, more
dense particles fall
 This creates convection currents
Convection
 Examples
 Heating
soup on a burner
 Heating your home
Radiation
 The transfer of energy by rays or waves
 No direct contact
 Examples:
 The
sun warming the Earth
Activity!!
 Come up with one example of each type
of heat transfer – draw an example of
this on the front of your foldable
 We will share our examples at the end
of class
 Try to come up with something we didn’t
share in class!
Homework
 Worksheet