IQWST PS2 Lessons 4-9 Assessment Review

Front

What is the function of a battery in an electrical circuit?

Back

A battery provides the chemical energy that is converted into electrical energy to power the circuit.

Front

What type of energy does a fan convert electrical energy into?

Back

Mechanical energy.

Front

What is the relationship between potential energy (PE) and kinetic energy (KE) in a moving car?

Back

The total energy of the car is the sum of the potential energy and kinetic energy.

Front

What is a conductor?

Back

A material that allows electricity to flow through it easily, such as copper or silver.

Front

What is an insulator?

Back

A material that does not allow electricity to flow through it easily, such as plastic or rubber.

Front

Why is plastic a good material for the handle of a cooking utensil?

Back

Plastic is a good insulator, preventing heat transfer and protecting users from burns.

Front

What is chemical energy?

Back

Energy stored in the bonds of chemical compounds, which can be released during a chemical reaction.

Front

What is mechanical energy?

Back

The sum of potential energy and kinetic energy in an object.

Front

How do living organisms transform chemical energy from food?

Back

They convert it into mechanical energy for movement and other biological processes.

Front

What is the principle of energy conservation?

Back

Energy cannot be created or destroyed, only transformed from one form to another.