Grade 6- Topic 4/Thermal Energy

Front

What is thermal energy?

Back

Thermal energy is the total kinetic energy of the particles in a substance, which determines its temperature.

Front

What are the three types of heat transfer?

Back

Conduction, convection, and radiation.

Front

Define conduction.

Back

Conduction is the transfer of heat through direct contact between materials.

Front

Define convection.

Back

Convection is the transfer of heat through the movement of fluids (liquids or gases) caused by differences in temperature.

Front

Define radiation.

Back

Radiation is the transfer of heat in the form of electromagnetic waves, such as sunlight.

Front

What happens to the kinetic energy of particles when an object is heated?

Back

The kinetic energy of the particles increases, causing the temperature of the object to rise.

Front

What is a heat source?

Back

A heat source is any material or object that provides heat, such as a stove, fire, or the sun.

Front

What is a heat sink?

Back

A heat sink is a material or object that absorbs heat, such as ice or water.

Front

Explain the concept of heat flow.

Back

Heat flows from areas of higher temperature to areas of lower temperature until thermal equilibrium is reached.

Front

What is photosynthesis?

Back

Photosynthesis is the process by which plants convert solar energy into chemical energy using carbon dioxide and water.