Midterm review

Front

What is an insulator?

Back

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

Front

Which material is a poor insulator of electricity?

Back

Eraser is a poor insulator of electricity compared to other materials like metal.

Front

What happens to materials when placed in hot water?

Back

Materials can change their physical properties, such as solubility, texture, and state (solid, liquid, gas) when heated.

Front

What is a mixture?

Back

A mixture is a combination of two or more substances that can be separated by physical means.

Front

How can gravel be separated from water?

Back

Gravel can be separated from water using filtration, where the water passes through a filter and the gravel is left behind.

Front

What is the importance of safety procedures during scientific investigations?

Back

Safety procedures help prevent accidents and injuries while conducting experiments.

Front

What should you never do when observing the Sun?

Back

You should never look directly at the Sun as it can cause serious eye damage.

Front

What is a circuit?

Back

A circuit is a closed loop that allows electricity to flow, typically consisting of a power source, wires, and devices like lightbulbs.

Front

How can you make only one lightbulb in a circuit operate?

Back

You can control which lightbulbs operate by opening or closing switches in the circuit.

Front

What is the role of a switch in a circuit?

Back

A switch controls the flow of electricity in a circuit, allowing you to turn devices on or off.