Study Guide: Key Concepts of Heat Transfer and Earth's Energy

__________ is the measure of how fast particles are moving in a substance.

• Temperature

• Pressure

• Volume

• Density

Heat always transfers from __________ objects to __________ objects.

• warmer, cooler

• cooler, warmer

• cold, hot

• hot, cold

In convection, warm air __________ because it becomes __________ and less dense.

• rises, warmer

• sinks, cooler

• rises, cooler

• sinks, warmer

Heat transfer through __________ waves is called radiation.

• electromagnetic

• mechanical

• sound

• gravitational

The temperature scale with a freezing point of 0° is the __________ scale.

• Celsius

• Fahrenheit

• Kelvin

• Rankine

__________ occurs when energy transfers through direct contact between particles.

• Conduction

• Radiation

• Evaporation

• Convection

__________ energy represents the total energy of all particles in a substance.

• Thermal

• Kinetic

• Potential

• Chemical

When ground heat transfers directly to touching air, this is an example of __________.

• conduction

• radiation

• evaporation

• convection

The sun initially heats the Earth through __________.

• radiation

• conduction

• convection

• insulation

Warm air rises because it is __________ and __________ dense than cooler air.

• warmer, less

• colder, more

• warmer, more

• colder, less