Grade 6- Topic 4/Thermal Energy

Front

What is convection current?

Back

The circular motion of a cold fluid sinking and a hot fluid rising, which transfers thermal energy.

Front

What is heat?

Back

Heat is the energy that flows from something warmer to something cooler.

Front

How does cooking food on a grill affect its temperature?

Back

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

Front

What is conduction?

Back

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

Front

What is specific heat?

Back

Specific heat is the amount of heat required to raise the temperature of 1 kg of a substance by 1 K.

Front

Which material has a higher specific heat: iron or plastic?

Back

Plastic has a higher specific heat (2302 J/(kg•K)) than iron (450 J/(kg•K)).

Front

What happens to the kinetic energy of particles when they are heated?

Back

The kinetic energy of the particles increases.

Front

What is thermal energy?

Back

Thermal energy is the total energy of all the particles in an object, related to temperature.

Front

How does heat transfer occur in a hand warmer?

Back

Heat is transferred by conduction, resulting in an increase in kinetic energy.

Front

What is radiation?

Back

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