4th Grade Spiral Review W2M

Front

What is a magnet?

Back

A magnet is an object that produces a magnetic field, which can attract or repel certain materials, especially metals like iron.

Front

What materials are attracted to magnets?

Back

Materials like iron, nickel, and cobalt are attracted to magnets.

Front

What is the difference between a bar magnet and an electromagnet?

Back

A bar magnet is a permanent magnet that produces a constant magnetic field, while an electromagnet is created by electric current and can be turned on or off.

Front

What does it mean for objects to have opposite charges?

Back

Opposite charges attract each other, meaning a positively charged object will attract a negatively charged object.

Front

What happens when two objects have the same charge?

Back

Objects with the same charge repel each other, meaning they push away from one another.

Front

What is an electrical circuit?

Back

An electrical circuit is a closed loop that allows electric current to flow, typically including a power source, wires, and a load (like a light bulb).

Front

What is the role of a battery in a circuit?

Back

The battery provides the electrical energy needed to power the circuit.

Front

What is a light bulb?

Back

A light bulb is a device that converts electrical energy into light energy when electricity flows through it.

Front

What can cause a light bulb to stop working in a circuit?

Back

A light bulb can stop working if the battery runs out of energy or if the bulb itself is damaged.

Front

What is energy?

Back

Energy is the ability to do work or cause change, and it exists in various forms, such as electrical, thermal, and mechanical.