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Unit 1 - Heat and Energy

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  • What type of energy is stored in a compressed spring?
    Elastic
  • A microwave oven uses what type of energy to heat food?
    Electromagnetic
  • What energy transformation happens in a toaster?
    Electrical to thermal
  • Why does hot air rise in a room?
    It is less dense
  • What energy does a wind turbine produce?
    Electrical
  • What energy is transferred when ice melts in your hand?
    Thermal
  • What is the main source of energy for the Earth?
    The Sun
  • Which type of energy is mostly wasted as heat in machines?
    Thermal
  • What is the method of heat transfer through liquids and gases?
    Convection
  • How does heat move in space?
    By radiation
  • What is the movement of heat through a solid substance?
    Conduction
  • What is thermal equilibrium?
    When two objects reach the same termperature
  • How does energy travel from a fireplace across the room?
    Radiation
  • What is the energy transfer in a blender?
    Electrical to kinetic and sound
  • In a pendulum, where is the kinetic energy the highest?
    At the bottom of the pendulum's swing
  • What kind of energy does a glowing light bulb produce?
    Light and heat
  • What type of heat transfer do we experience from the sun?
    Radiation
  • What energy does a falling apple have?
    Kinetic
  • What energy is released by friction?
    Heat
  • Which energy transfer happens when metal heats water in a kettle?
    Conduction
  • What kind of energy does a stretched rubber band have?
    Elastic
  • What is energy?
    The ability to do work or cause change
  • What is the energy transfer when burning wood in a fire?
    Chemical to thermal and light
  • What is the energy stored in the nucleus of an atom called?
    Nuclear
  • What kind of energy transfer happens when you lie in the sun?
    Radiation
  • A ball at the top of a hill has what kind of energy?
    Gravitational potential
  • What type of energy is used when lifting a book onto a shelf?
    Gravitational potential
  • How does sound transfer energy?
    Through vibration of molecules
  • What type of energy is stored in food?
    Chemical
  • What direction does heat transfer?
    From hot to cold
  • What is the heat transfer that occurs when hot soup warms a metal spoon?
    Conduction
  • What type of heat transfer occurs when boiling water circulates?
    Convection
  • What energy change happens when charging a phone?
    Electrical to chemical
  • What is the energy source for geothermal power plants?
    Heat from Earth's core
  • What type of heat transfer is blocked by wearing a jacket?
    Radiation
  • Describe how the thermal energy transfers when a hot drink cools to room temperature.
    Thermal energy moves from the hot liquid to the cooler air
  • When you cook food in a gas oven, what kind of energy do you start with?
    Chemical
  • What energy conversion occurs in a solar panel?
    Light to electrical
  • What happens to the total amount of energy in a closed system?
    It does not change
  • Touching a hot metal rod is an example of which heat transfer?
    Conduction
  • Which type of potential energy is due to the shape of an object?
    Elastic
  • What is the energy of moving electrons called?
    Electrical
  • What type of energy transfer causes the ceiling to be hotter than the floor?
    Convection
  • What does an insulator do?
    It reduces heat loss
  • What does the Law of Conservation of Energy state?
    Energy cannot be created or destroyed, only changed from one type to another.
  • What type of heat transfer does not require matter?
    Radiation
  • What type of energy is stored in gasoline?
    Chemical
  • Why does a black surface heat up more in the sun?
    It absorbs more radiation
  • A book sitting on a shelf is an example of this kind of energy.
    Gravitational potential
  • What is the name for energy due to motion?
    Kinetic
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