Quarter 2 Mini-Lesson: Heat Transfer

​Quarter 2 Mini-Lesson: Heat Transfer

• ​SC.7.P.11.1 Recognize that adding heat to or removing heat from a system may result in a temperature change & possibly a change of state. (DOK 1)

  SC.7.P.11.4 Observe and describe that heat flows in predictable ways, moving from warmer objects to cooler ones until they reach the same temperature. (DOK 2)

​Heat Transfer Key Concepts

• ​Heat is the movement of thermal energy from one object or substance to another.

• ​Heat is transferred by conduction, convection, or radiation.

• ​Conduction is the transfer of heat from two objects in direct contact with each other (touching). Heat moves from the warmer object or substance to the cooler. This is how you burn your skin if you touch something really hot!

• ​Radiation is the transfer of heat in electromagnetic waves, or rays. This is the only way heat can move through a vacuum (empty space), therefore it is how the Sun's energy travels to Earth.

• ​Convection is the transfer of heat throughout fluids (substances that flow, like liquids and gases). As fluids are heated their particles move faster and they become less dense and rise (away from their heat source) and then cool and sink, creating circular convection currents.

• ​Water heats and cools more slowly than land and air, which creates land and sea breezes that keep coastal climates more moderate than their inland neighbors.

Multiple Choice

What is the transfer of heat by movement of liquids or gases?

• Radiation
• Convection
• Conduction
• Heat

Multiple Choice

What are waves that can transfer heat through the vacuum of empty space?

• Electromagnetic waves
• Convection
• Conduction
• Heat

Multiple Choice

What is a transfer of heat energy by electromagnetic waves?

• Radiation
• Convection
• Conduction
• Heat

Multiple Choice

What is the transfer of heat by direct contact?

• Convection
• Electromagnetic waves
• Radiation
• Conduction

Multiple Choice

What is the measurement of the average kinetic energy of a substance?

• Kinetic energy
• Temperature
• Thermal energy
• Potential energy

Multiple Choice

What is the total amount of kinetic energy in a substance?

• Potential energy
• Kinetic energy
• Thermal energy
• Temperature

Multiple Choice

What is the transfer of kinetic energy from one substance to another?

• Heat
• Energy
• Thermal energy
• Temperature

Multiple Choice

When heat is transferred during convection, heat will always move from _________ to __________ temperatures.

• low to high

• high to low

• they don't move

Multiple Choice

Analyze the image. What could explain why certain parts of the ocean have warmer temperatures?

• the uneven heating of the Earth's surface

• the rising of cold air and the sinking of warm air

• hurricanes

Multiple Choice

The Sun warms the atmosphere and drives convection currents because

• warm air is less dense and rises

• warm air is less dense and sinks

• warm air is more dense and rises

• warm air is more dense and sinks