Magnetic Fields Chapter 1

Front

What is a magnetic field?

Back

A magnetic field is a region around a magnet where magnetic forces can be detected, influencing the behavior of charged particles and magnetic materials.

Front

What is the direction of magnetic field lines?

Back

Magnetic field lines emerge from the north pole of a magnet and enter the south pole.

Front

What is the relationship between magnetic poles?

Back

Like poles (north-north or south-south) repel each other, while opposite poles (north-south) attract each other.

Front

What is the Earth's magnetic field?

Back

The Earth's magnetic field is a magnetic field that extends from the Earth's interior out into space, affecting compass needles and protecting the planet from solar wind.

Front

How does a compass work?

Back

A compass works by aligning its needle, which is a small magnet, with the Earth's magnetic field, pointing towards the magnetic north.

Front

What happens to a compass needle when it is near a magnet?

Back

The compass needle will align itself with the magnetic field of the magnet, pointing towards its opposite pole.

Front

What is magnetic attraction?

Back

Magnetic attraction is the force that pulls together opposite magnetic poles, such as a north pole and a south pole.

Front

What is magnetic repulsion?

Back

Magnetic repulsion is the force that pushes apart like magnetic poles, such as two north poles or two south poles.

Front

What are magnetic field lines?

Back

Magnetic field lines are imaginary lines that represent the strength and direction of a magnetic field, showing how the field interacts with magnetic materials.

Front

What is the significance of the density of magnetic field lines?

Back

The density of magnetic field lines indicates the strength of the magnetic field; closer lines mean a stronger field.