Review of : Heat, Temperature

1
Review of Heat, Temperature Thermal Energy
2
Heat

• Heat is a _______ of energy from objects at a
  _________ temperature to objects at a __________
  temperature.
• Soon after you put ice cubes into a pitcher of
  lemonade, energy is transferred from the warmer
  _________ to the colder ____.

flow
higher
lower
lemonade
ice
HEAT FLOWS FROM WARMER ? COOLER!!!
3
Temperature

• Temperature is a measure of the __________
  kinetic energy of all the particles in an object.
• If a liquid, such as hot cocoa, has a high
  temperature, the particles in the liquid are
  moving __________, and have a _______ average
  kinetic energy.
• If a drink, such as a fruit smoothie, has a low
  temperature, the particles in the liquid are
  moving _________ and have a _______ kinetic energy

average
Very fast
high
More slowly
low
4
Thermal Energy

• Thermal energy is the _______ kinetic energy of
  particles in an object.
• Note that temperature and thermal energy are
  different from each other. Temperature is an
  __________ while thermal energy is a ______.
• A glass of water may have the same temperature as
  the Mississippi River, but will have _____
  thermal energy because there are less water
  particles in the glass of water.

total
average
total
less
5
Review of Conduction, Convection, and Radiation
6
Conduction

• Conduction is the process that moves energy from
  one object to another when they are
  _______________.
• Conduction occurs any time that objects at a
  _________ temperature come into contact with each
  other.
• Conduction can also occur within a single object.
  In this case, energy is transferred from the
  ______ part of the object to the _______ part of
  the object.

Touching physically
different
warmer
cooler
7
Convection

• Convection is the process that transfers energy
  by the movement of particles in the same
  direction in a _________ or ____.
• Cool air/water that is _____ dense will push
  warmer, _____ dense, air/water upwards. Once
  that warm air/water cools, it becomes _____ dense
  once again and settles back down to the bottom to
  start the process all over again.

liquid
gas
more
less
more
8
Radiation

• Radiation is energy that travels as
  ______________ waves, which includes visible
  light and microwaves.
• The ____ is the most significant source of
  radiation that you experience on a daily basis.
• Like both conduction and convection, radiation
  can transfer energy from a ______ object to a
  _______ one.
• However, radiation differs from conduction and
  convection because radiation can travel through
  ______________, as it does when it moves from the
  Sun to the Earth.

electromagnetic
Sun
warmer
cooler
Empty space
9
Quiz Practice!
10

• A hot saucepan is placed on a cold bench. Heat
  will flow from the saucepan to the bench until
• A. the bench is warmer than the saucepan.
• B. the bench is as hot as the saucepan was.
• C. the saucepan has lost all of its heat.
• D. the saucepan and bench are at the same
  temperature.

11

• A candle is lit. The heat of the flame will melt
  the candle because
• A. the heat of the hot flame is transferred to
  the colder candle.
• B. the wax of the candle is repelled by the
  flame.
• C. the candle must stay hot to heat the flame.
• D. the flame takes all the heat energy and the
  candle has no energy.

12

• Which types of heat transfer involve heat flow
  from hot objects to colder objects?
• A. convection, conduction, and radiation
• B. conduction and radiation, but not convection
• C. convection and conduction, but not radiation
• D. convection and radiation, but not conduction

13

• Heat will flow from a hot object to a cold object
  until the objects reach
• A. Boiling point.
• B. stability.
• C. collapse.
• D. The same temperature.

14

• Ice is placed in hot water. What happens to the
  temperature of the ice and the water?
• A. The ice gets warmer, and the water gets
  cooler.
• B. The ice gets warmer, and the water stays the
  same.
• C. The ice and the water both get cooler.
• D. The ice gets cooler, and the water gets
  warmer.

15

• When you hold a cup of warm water, your hands get
  warmer. Why does this happen?
• A. Heat transfers by convection
• B. Heat transfers by conduction
• C. Heat transfers by condensation
• D. Heat transfers by radiation

16

• The total energy of all particles in a substance
  is called
• Temperature
• Thermal energy
• Degrees
• Mass

17

• Heat flows
• Only from warmer objects to cooler ones
• Only from cooler objects to warmer ones
• Both ways between objects that are not at the
  same temperature
• Between all objects all the time regardless of
  their temperature

18

• Heat is transferred from one particle of matter
  to another through the movement of fluids in a
  process called
• Conduction
• Convection
• Radiation
• Insulation

19

• Which kind of heat transfer takes place when you
  put a spoon in a cup of soup and the spoon gets
  hot to the touch
• Convection
• Conduction
• Deduction
• Radiation

20

• Which kind of heat transfer can occur through
  space
• Radiation
• Conduction
• Convection
• Deduction

21

• Which kind of heat transfer occurs when you add
  hot water to a cold bath?
• Radiation
• Conduction
• Deduction
• Convection

22

• It is a cold winter day. Youve been out
  playing, and you warm you hands in front of the
  fire in your fire place. Which kind of heat
  transfer is this?
• Conduction
• Deduction
• Radiation
• Convection