STAAR Science Review - Physical

Front

What is an electrical insulator?

Back

An electrical insulator is a material that does not allow electricity to flow through it easily. Examples include rubber, glass, and plastic.

Front

What are some examples of electrical insulators?

Back

Eraser, toothpick, cotton ball.

Front

What is matter?

Back

Matter is anything that has mass and takes up space. It can exist in different states, such as solid, liquid, or gas.

Front

What are the three states of matter?

Back

Solid, liquid, and gas.

Front

What is a circuit?

Back

A circuit is a closed path through which electricity flows. It typically includes a power source, conductors, and a load.

Front

What is the function of a switch in a circuit?

Back

A switch is used to open or close a circuit, controlling the flow of electricity.

Front

What is a light-emitting diode (LED)?

Back

An LED is a semiconductor device that emits light when an electric current passes through it.

Front

What happens when a circuit is complete?

Back

When a circuit is complete, electricity flows through it, allowing devices like lights or buzzers to operate.

Front

What is the difference between a solid and a gas?

Back

Solids have a definite shape and volume, while gases have no definite shape or volume and can expand to fill their container.

Front

How can you identify a gas in a container?

Back

A gas will fill the entire container and may not be visible, while solids and liquids have distinct shapes.