Heat Concepts for 10th Grade

What is specific heat capacity?

• Amount of heat required to raise the temperature of a unit mass of a substance by one degree Celsius

• The amount of light required to raise the temperature of a substance

• The amount of electricity required to raise the temperature of a substance

• The amount of pressure required to raise the temperature of a substance

How is specific heat capacity different from heat capacity?

• Specific heat capacity is measured in joules, while heat capacity is measured in calories.

• Specific heat capacity is used for solids only, while heat capacity is used for liquids and gases.

• Specific heat capacity measures heat required to raise the temperature of a unit mass, while heat capacity measures heat required to raise the temperature of a substance.

• Specific heat capacity measures the amount of heat released by a substance, while heat capacity measures the amount of heat absorbed by a substance.

What are the units of specific heat capacity?

• N/m^2

• J/kg°C

• m/s^2

• Kg/m^3

What is radiation in the context of heat transfer?

• Transfer of heat through electromagnetic waves

• Transfer of heat through convection

• Transfer of heat through conduction

• Transfer of heat through sound waves

How does heat transfer occur in solids?

• Convection

• Absorption

• Conduction

• Reflection

What are the factors that affect the rate of heat transfer?

• Humidity, air pressure, wind speed

• Time of day, altitude, distance from the equator

• Temperature difference, surface area, material type, and thickness of the material

• Color of the material, weight of the material, shape of the material

Explain the concept of thermal equilibrium.

• Two or more objects reach the same temperature and there is no net flow of heat between them.

• Thermal equilibrium is when objects of different materials reach the same temperature and there is a continuous flow of heat between them.

• Thermal equilibrium occurs when one object is hotter than the other and heat flows from the hotter object to the cooler one.

• Two objects reach different temperatures and there is no net flow of heat between them.

How is heat related to temperature?

• Heat is the same as temperature

• Heat has no relationship to temperature

• Heat is the measure of the average kinetic energy of the particles in a substance

• Heat is the energy transferred between substances due to a difference in temperature.

Heat is a form of