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Electromagnetic Radiation Exam Questions
And Answers |Latest 2025 | Guaranteed Pass.
Electromagnetic radiation - Answer✔the transfer of energy by waves travelling through matter
or across empty space
electromagnetic waves - Answer✔A wave that consists of vibrating electric and magnetic fields.
These waves transfer energy
A common bar magnet exerts magnetic force in an area that - Answer✔surrounds it, called a
magnetic field
Because of the magnetic field surrounding the bar magnet, - Answer✔a magnet is able to exert
a force on objects without touching them. In order for an object to feel the force of a magnetic
field, they have to be located in that magnetic field.
An electric field is an area of - Answer✔electrical force surrounding a charged particle. Similar
to a magnetic field, an electric field can exert force on objects over a distance without actually
touching them
Magnetic and electric fields are - Answer✔invisible areas of force surrounding magnets and
charged particles
AN electromagnetic wave begins when - Answer✔an electrically charged particle vibrates
When a charged particle vibrates, it causes the electric field around the particle to -
Answer✔vibrate as well
A vibrating electric field around the particle creates a - Answer✔vibrating magnetic field
The vibrating electric and vibrating magnetic field combine to create - Answer✔an
electromagnetic wave
A vibrating charged particle generates - Answer✔vibrating electric and magnetic fields. These
vibrating fields are what make up an electromagnetic wave
1
, ©FYNDLAY 2024/2025 ALL RIGHTS RESERVED 11:08AM. A+
The electric and magnetic fields that make up an electromagnetic wave are positioned so that
they - Answer✔occur at right angles to one another
The electric and magnetic fields are also at right angles to the - Answer✔direction that the
wave travels
Since the electric and magnetic fields are at right angles to each other, -
Answer✔electromagnetic waves are transverse waves
Unlike a mechanical transverse wave, which requires a medium, electromagnetic waves -
Answer✔are able to travel through empty space. No energy is lost, and the wave does not get
weaker as it travels
As a mechanical wave needs a medium to propagate, - Answer✔energy is lost and the wave
gets weaker as it travels
As the electromagnetic wave travels away from the source, the energy is - Answer✔diluted as it
spreads out over an ever larger area. This is like a sound wave, which spreads out and becomes
less intense farther from the source
Electromagnetic waves can travel through - Answer✔matter and across empty space
When electromagnetic waves strike matter, - Answer✔they interact with it in the same ways
that mechanical waves interact with matter.
With the presence of matter, electromagnetic waves may - Answer✔reflect (bounce back),
refract (bend when travelling through different materials, or diffract (bend around objects)
reflect - Answer✔bounce back
refract - Answer✔bend when travelling through different materials
diffract - Answer✔bend around objects
With matter, electromagnetic waves can be converted to - Answer✔other forms of energy. In a
microwave oven, for instance, the microwaves strike food and are converted to thermal energy,
which heats the food
Electromagnetic waves behave like - Answer✔waves and particles
Electromagnetic radiation is a form of energy that is produced by - Answer✔oscillating electric
and magnetic disturbance, or by the movement of electrically charged particles travelling
through a vacuum or matter
The electric and magnetic fields come at right angles to - Answer✔each other and to the
direction that the wave is moving
2
Electromagnetic Radiation Exam Questions
And Answers |Latest 2025 | Guaranteed Pass.
Electromagnetic radiation - Answer✔the transfer of energy by waves travelling through matter
or across empty space
electromagnetic waves - Answer✔A wave that consists of vibrating electric and magnetic fields.
These waves transfer energy
A common bar magnet exerts magnetic force in an area that - Answer✔surrounds it, called a
magnetic field
Because of the magnetic field surrounding the bar magnet, - Answer✔a magnet is able to exert
a force on objects without touching them. In order for an object to feel the force of a magnetic
field, they have to be located in that magnetic field.
An electric field is an area of - Answer✔electrical force surrounding a charged particle. Similar
to a magnetic field, an electric field can exert force on objects over a distance without actually
touching them
Magnetic and electric fields are - Answer✔invisible areas of force surrounding magnets and
charged particles
AN electromagnetic wave begins when - Answer✔an electrically charged particle vibrates
When a charged particle vibrates, it causes the electric field around the particle to -
Answer✔vibrate as well
A vibrating electric field around the particle creates a - Answer✔vibrating magnetic field
The vibrating electric and vibrating magnetic field combine to create - Answer✔an
electromagnetic wave
A vibrating charged particle generates - Answer✔vibrating electric and magnetic fields. These
vibrating fields are what make up an electromagnetic wave
1
, ©FYNDLAY 2024/2025 ALL RIGHTS RESERVED 11:08AM. A+
The electric and magnetic fields that make up an electromagnetic wave are positioned so that
they - Answer✔occur at right angles to one another
The electric and magnetic fields are also at right angles to the - Answer✔direction that the
wave travels
Since the electric and magnetic fields are at right angles to each other, -
Answer✔electromagnetic waves are transverse waves
Unlike a mechanical transverse wave, which requires a medium, electromagnetic waves -
Answer✔are able to travel through empty space. No energy is lost, and the wave does not get
weaker as it travels
As a mechanical wave needs a medium to propagate, - Answer✔energy is lost and the wave
gets weaker as it travels
As the electromagnetic wave travels away from the source, the energy is - Answer✔diluted as it
spreads out over an ever larger area. This is like a sound wave, which spreads out and becomes
less intense farther from the source
Electromagnetic waves can travel through - Answer✔matter and across empty space
When electromagnetic waves strike matter, - Answer✔they interact with it in the same ways
that mechanical waves interact with matter.
With the presence of matter, electromagnetic waves may - Answer✔reflect (bounce back),
refract (bend when travelling through different materials, or diffract (bend around objects)
reflect - Answer✔bounce back
refract - Answer✔bend when travelling through different materials
diffract - Answer✔bend around objects
With matter, electromagnetic waves can be converted to - Answer✔other forms of energy. In a
microwave oven, for instance, the microwaves strike food and are converted to thermal energy,
which heats the food
Electromagnetic waves behave like - Answer✔waves and particles
Electromagnetic radiation is a form of energy that is produced by - Answer✔oscillating electric
and magnetic disturbance, or by the movement of electrically charged particles travelling
through a vacuum or matter
The electric and magnetic fields come at right angles to - Answer✔each other and to the
direction that the wave is moving
2
